DE4439239A1 - Circuit board carrier with double-sided laminated foil system e.g. for signals transmission applications - Google Patents
Circuit board carrier with double-sided laminated foil system e.g. for signals transmission applicationsInfo
- Publication number
- DE4439239A1 DE4439239A1 DE19944439239 DE4439239A DE4439239A1 DE 4439239 A1 DE4439239 A1 DE 4439239A1 DE 19944439239 DE19944439239 DE 19944439239 DE 4439239 A DE4439239 A DE 4439239A DE 4439239 A1 DE4439239 A1 DE 4439239A1
- Authority
- DE
- Germany
- Prior art keywords
- circuit carrier
- channels
- circuit board
- conductive
- film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4611—Manufacturing multilayer circuits by laminating two or more circuit boards
- H05K3/4614—Manufacturing multilayer circuits by laminating two or more circuit boards the electrical connections between the circuit boards being made during lamination
- H05K3/462—Manufacturing multilayer circuits by laminating two or more circuit boards the electrical connections between the circuit boards being made during lamination characterized by laminating only or mainly similar double-sided circuit boards
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0274—Optical details, e.g. printed circuits comprising integral optical means
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0286—Programmable, customizable or modifiable circuits
- H05K1/0287—Programmable, customizable or modifiable circuits having an universal lay-out, e.g. pad or land grid patterns or mesh patterns
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4602—Manufacturing multilayer circuits characterized by a special circuit board as base or central core whereon additional circuit layers are built or additional circuit boards are laminated
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0296—Conductive pattern lay-out details not covered by sub groups H05K1/02 - H05K1/0295
- H05K1/0298—Multilayer circuits
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09009—Substrate related
- H05K2201/09118—Moulded substrate
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/095—Conductive through-holes or vias
- H05K2201/09609—Via grid, i.e. two-dimensional array of vias or holes in a single plane
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09818—Shape or layout details not covered by a single group of H05K2201/09009 - H05K2201/09809
- H05K2201/09836—Oblique hole, via or bump
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09818—Shape or layout details not covered by a single group of H05K2201/09009 - H05K2201/09809
- H05K2201/09945—Universal aspects, e.g. universal inner layers or via grid, or anisotropic interposer
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10227—Other objects, e.g. metallic pieces
- H05K2201/10378—Interposers
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/17—Post-manufacturing processes
- H05K2203/178—Demolishing, e.g. recycling, reverse engineering, destroying for security purposes; Using biodegradable materials
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/321—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by conductive adhesives
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/321—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by conductive adhesives
- H05K3/323—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by conductive adhesives by applying an anisotropic conductive adhesive layer over an array of pads
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
- H05K3/4038—Through-connections; Vertical interconnect access [VIA] connections
- H05K3/4053—Through-connections; Vertical interconnect access [VIA] connections by thick-film techniques
- H05K3/4069—Through-connections; Vertical interconnect access [VIA] connections by thick-film techniques for via connections in organic insulating substrates
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4611—Manufacturing multilayer circuits by laminating two or more circuit boards
- H05K3/4623—Manufacturing multilayer circuits by laminating two or more circuit boards the circuit boards having internal via connections between two or more circuit layers before lamination, e.g. double-sided circuit boards
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Printing Elements For Providing Electric Connections Between Printed Circuits (AREA)
- Production Of Multi-Layered Print Wiring Board (AREA)
Abstract
Description
Die Erfindung betrifft einen recyclingfähigen Schaltungsträger mit beidseitig laminierten Foliensystem.The invention relates to a recyclable circuit carrier film system laminated on both sides.
Aus DE 30 08 143 ist beispielsweise ein Verfahren zur Herstellung von gedruckten Leiterplatten mit Lochungen bekannt, deren Wandungen metallisiert sind. Nach dem Herstellen des Lochmusters wird der Schaltungsträger einem Ätz- oder Lösungsmittel für die Haftvermittlerschicht ausgesetzt. Als Ätzmittel werden Chromsäuren, alkalische Permanganatlösungen sowie Alkalimetallhydroxyd-Lösungen beschrieben. Die Ätzlösung baut die Haftvermittlerschicht unterhalb der Abdeckfolie in einem bestimmten Abstand vom betreffenden Lochrand ab. Nach dem Entfernen der Abdeckfolie erfolgt der Aufbau der Oberfläche, einschließlich der Lochwandungen mittels bekannter stromloser Metallabscheidung. Am Ende steht eine feste metallische Verbindung zur Verfügung, die über die Lochwandmetallisierung zwei Leitbahnebenen miteinander verbindet.DE 30 08 143, for example, describes a method of manufacture known from printed circuit boards with perforations, the walls are metallized. After the hole pattern has been made, the Circuit carrier an etching or solvent for the Bonding agent layer exposed. As an etchant Chromic acids, alkaline permanganate solutions as well Alkali metal hydroxide solutions described. The etching solution builds the Adhesion layer below the cover film in a certain Distance from the edge of the hole in question. After removing the Cover film is used to build up the surface, including the Hole walls using known electroless metal deposition. At the A solid metallic connection is available at the end, the Two interconnect levels with each other via the perforated wall metallization connects.
Werden derartige Verfahren bei laminierten Foliensystemen angewendet, so können diese im Recyclingfall nicht einwandfrei vom Schaltungsträger entfernt werden. Es kommt zum Zerreißen des Foliensystems, zumindest bleiben Folienstücke am Lochrand haften. Der Schaltungsträger ist damit nicht wiederverwendbar.Such processes are used in laminated film systems applied, so they can not flawlessly from the Circuit carriers are removed. There is tearing of the Film system, at least pieces of film stick to the edge of the hole. The circuit carrier is therefore not reusable.
Aufgabe der Erfindung ist es, eine lösbare Durchverbindung zwischen beidseits eines Trägers befindlichen Schaltungen anzugeben.The object of the invention is to provide a releasable through connection between to indicate circuits located on both sides of a carrier.
Erfindungsgemäß wird die Aufgabe mit den in den Ansprüchen genannten und in den Ausführungsbeispielen näher erläuterten Mitteln gelöst.According to the invention the task with the in the claims mentioned and explained in more detail in the exemplary embodiments Means solved.
Beidseits des Schaltungsträgers sind Folien mit Schaltungen und Bauelementen laminiert. Die Durchverbindung von einem zum anderen Foliensystem erfolgt über Kanäle, die im Schaltungsträger nahezu beliebig angeordnet sind. Die elektrische Leitfähigkeit im Kanal wird durch leitfähige Pasten und/oder Metallisierung der Kanalwand realisiert. Der Übergang von der Leitbahn im Kanal zum Anschlußpunkt an der Folie erfolgt durch eine lösbare Verbindung. Die lösbare Verbindung kann durch Leitkleber, leitfähige Pasten oder in der z-Achse leitfähige Klebefolien realisiert werden.Films with circuits and are on both sides of the circuit carrier Components laminated. The connection from one to the other Foil system takes place via channels that are almost in the circuit carrier are arranged arbitrarily. The electrical conductivity in the sewer is by conductive pastes and / or metallization of the channel wall realized. The transition from the channel in the channel to The connection point on the film is made by a detachable connection. The detachable connection can be made using conductive adhesive, conductive pastes or conductive adhesive films can be realized in the z-axis.
Der Vorteil der erfindungsgemäßen Lösung besteht darin, daß das auflaminierte Foliensystem mit Durchkontaktierung durch den Schaltungsträger vollständig von diesem gelöst werden kann. Danach steht der Schaltungsträger zur Wiederverwendung zur Verfügung. Beim Abtrennen der Folie sind nur die Kräfte der Folienhaftung auf dem Schaltungsträger zu überwinden.The advantage of the solution according to the invention is that laminated film system with through-hole through the Circuit carrier can be completely detached from this. After that the circuit carrier is available for reuse. At the Removing the film are only the forces of film adhesion on the Circuit carriers to overcome.
Die Erfindung wird nachstehend an 3 Ausführungsbeispielen näher erläutert. In den Zeichnungen zeigenThe invention is illustrated below with 3 exemplary embodiments explained. Show in the drawings
Fig. 1 einen Schaltungsträger mit im wesentlichen senkrecht verlaufenden Kanälen und beidseits laminierten Foliensystem, Fig. 1 is a circuit carrier having substantially perpendicularly running channels and on both sides of the laminated film system,
Fig. 2 einen Schaltungsträger mit senkrecht und schräg durch den Schaltungsträger und im Schaltungsträger verlaufenden Kanälen Fig. 2 shows a circuit carrier with vertically and obliquely through the circuit carrier and channels running in the circuit carrier
Fig. 3 einen Schaltungsträger mit im wesentlichen senkrecht verlaufenden Kanälen und deren matrixförmige Anordnung. Fig. 3 shows a circuit carrier with essentially perpendicular channels and their matrix-shaped arrangement.
Der Schaltungsträger 1 in Fig. 1 weist im wesentlichen senkrecht verlaufende Kanäle 2 auf. Die Folie 3 ist auf dem Träger 1 beidseits laminiert und trägt Leiter 4 und Anschlußpunkte 5. Der Anschlußpunkt wird durch die Folie kontaktierte metallische Kontakte oder durch die Leitbahn selbst gebildet. Im Kanal 2 sind an der Wand Metallisierungen 6 aufgebracht. Der Übergang von der Metallisierung 6 im Kanal zum Anschlußpunkt 5 wird durch eine lösbare Verbindung 7 hergestellt. Diese Verbindung wird durch leitfähige Pasten, Leitkleber oder in z-Achse leitfähige Klebefolien realisiert. An Stelle der Metallisierung der Kanalwand, können leitfähige Pasten oder Leitkleber in den Kanal eingefüllt werden.The circuit carrier 1 in FIG. 1 has essentially perpendicular channels 2 . The film 3 is laminated on both sides of the carrier 1 and carries the conductor 4 and connection points 5 . The connection point is formed by the foil-contacted metallic contacts or by the interconnect itself. Metallization 6 is applied to the wall in channel 2 . The transition from the metallization 6 in the channel to the connection point 5 is made by a detachable connection 7 . This connection is realized using conductive pastes, conductive adhesives or adhesive films that are conductive in the z-axis. Instead of metallizing the duct wall, conductive pastes or conductive adhesives can be filled into the duct.
Gemäß Fig. 2 sind neben den senkrecht zur Schaltungsträgerfläche verlaufenden Kanälen schräg oder im Schaltungsträger angeordnet. Kanalverläufe im Schaltungsträger lassen sich vorteilhaft durch stereolithografische Verfahren herstellen. In den Kanälen können sowohl elektrische als auch optische Signalübertragungswege (optische Fasern) angeordnet sein.According to FIG. 2, in addition to the channels running perpendicular to the circuit carrier surface, they are arranged obliquely or in the circuit carrier. Channel profiles in the circuit carrier can advantageously be produced by stereolithographic processes. Both electrical and optical signal transmission paths (optical fibers) can be arranged in the channels.
Fig. 3 zeigt einen Schaltungsträger bei dem die Kanäle im wesentlichen senkrecht matrixförmig über die gesamte Fläche des Schaltungsträgers angeordnet sind. Für schaltungstechnisch notwendige Durchkontaktierungen werden bestimmte Kanäle metallisiert oder mit leitfähiger Paste aufgefüllt. Auf den Schaltungsträger kann eine in z-Achse leitfähige Folie laminiert werden. Daran schließt sich das Foliensystem an. Fig. 3 shows a circuit substrate in which the channels are arranged substantially vertically in matrix form over the entire surface of the circuit carrier. Certain channels are metallized or filled with conductive paste for plated-through holes. A film that is conductive in the z-axis can be laminated onto the circuit carrier. This is followed by the film system.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19944439239 DE4439239A1 (en) | 1994-11-03 | 1994-11-03 | Circuit board carrier with double-sided laminated foil system e.g. for signals transmission applications |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19944439239 DE4439239A1 (en) | 1994-11-03 | 1994-11-03 | Circuit board carrier with double-sided laminated foil system e.g. for signals transmission applications |
Publications (1)
Publication Number | Publication Date |
---|---|
DE4439239A1 true DE4439239A1 (en) | 1996-05-09 |
Family
ID=6532379
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19944439239 Withdrawn DE4439239A1 (en) | 1994-11-03 | 1994-11-03 | Circuit board carrier with double-sided laminated foil system e.g. for signals transmission applications |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE4439239A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19649454A1 (en) * | 1996-11-28 | 1998-06-04 | Alcan Gmbh | Circuit board for integrated electronic circuits and method for manufacturing a circuit board |
DE19738550A1 (en) * | 1997-09-03 | 1998-10-22 | Siemens Ag | Multiple layer conductor structure e.g. for electronic circuit |
DE19739591A1 (en) * | 1997-09-10 | 1999-03-11 | Wuerth Elektronik Gmbh & Co Kg | Recyclable circuit board, consisting of a foil and carrier system |
EP1814372A1 (en) * | 2004-10-22 | 2007-08-01 | Ibiden Co., Ltd. | Multilayer printed wiring board |
EP2621254A1 (en) * | 2012-01-25 | 2013-07-31 | In2Tec Limited | Recyclable circuit assembly |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4305399A1 (en) * | 1992-03-25 | 1993-09-30 | Dyconex Ag Zuerich | PCB reinforcement |
EP0575292A1 (en) * | 1992-06-15 | 1993-12-22 | Dyconex Patente Ag | Process for manufacturing substrates with through-holes |
EP0620702A2 (en) * | 1993-04-16 | 1994-10-19 | Dyconex Patente Ag | Core for electrical interconnection substrates and electrical interconnection substrates with core, and method for manufacturing the same |
-
1994
- 1994-11-03 DE DE19944439239 patent/DE4439239A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4305399A1 (en) * | 1992-03-25 | 1993-09-30 | Dyconex Ag Zuerich | PCB reinforcement |
EP0575292A1 (en) * | 1992-06-15 | 1993-12-22 | Dyconex Patente Ag | Process for manufacturing substrates with through-holes |
EP0620702A2 (en) * | 1993-04-16 | 1994-10-19 | Dyconex Patente Ag | Core for electrical interconnection substrates and electrical interconnection substrates with core, and method for manufacturing the same |
Non-Patent Citations (2)
Title |
---|
SCHMIDT,W. * |
u.a.: Dimensionen in der Leiterplat- tentechnik. In: Metalloberfläche 48, 1994, 4, S.260-264 * |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19649454A1 (en) * | 1996-11-28 | 1998-06-04 | Alcan Gmbh | Circuit board for integrated electronic circuits and method for manufacturing a circuit board |
EP0851721A2 (en) * | 1996-11-28 | 1998-07-01 | Alcan Deutschland Gmbh | Separable plate for integrated electronic circuits, process for manufacturing a plate, and its use |
EP0851721A3 (en) * | 1996-11-28 | 1999-11-17 | Alcan Deutschland Gmbh | Separable plate for integrated electronic circuits, process for manufacturing a plate, and its use |
DE19649454B4 (en) * | 1996-11-28 | 2005-11-17 | Alcan Deutschland Gmbh | Integrated circuit board and method of manufacturing a circuit board |
DE19738550A1 (en) * | 1997-09-03 | 1998-10-22 | Siemens Ag | Multiple layer conductor structure e.g. for electronic circuit |
DE19739591A1 (en) * | 1997-09-10 | 1999-03-11 | Wuerth Elektronik Gmbh & Co Kg | Recyclable circuit board, consisting of a foil and carrier system |
EP1814372A1 (en) * | 2004-10-22 | 2007-08-01 | Ibiden Co., Ltd. | Multilayer printed wiring board |
EP1814372A4 (en) * | 2004-10-22 | 2010-04-14 | Ibiden Co Ltd | Multilayer printed wiring board |
US8238700B2 (en) | 2004-10-22 | 2012-08-07 | Ibiden Co., Ltd. | Multilayer printed circuit board |
EP2621254A1 (en) * | 2012-01-25 | 2013-07-31 | In2Tec Limited | Recyclable circuit assembly |
US9706693B2 (en) | 2012-01-25 | 2017-07-11 | In2Tec Limited | Recyclable circuit assembly |
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Legal Events
Date | Code | Title | Description |
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OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8141 | Disposal/no request for examination |