JP3839802B2 - 磁気検出装置 - Google Patents
磁気検出装置 Download PDFInfo
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- JP3839802B2 JP3839802B2 JP2003280313A JP2003280313A JP3839802B2 JP 3839802 B2 JP3839802 B2 JP 3839802B2 JP 2003280313 A JP2003280313 A JP 2003280313A JP 2003280313 A JP2003280313 A JP 2003280313A JP 3839802 B2 JP3839802 B2 JP 3839802B2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
- G01R33/09—Magnetoresistive devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
- G01D5/147—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the movement of a third element, the position of Hall device and the source of magnetic field being fixed in respect to each other
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/24—Housings ; Casings for instruments
- G01D11/245—Housings for sensors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49004—Electrical device making including measuring or testing of device or component part
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49007—Indicating transducer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49075—Electromagnet, transformer or inductor including permanent magnet or core
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49082—Resistor making
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49121—Beam lead frame or beam lead device
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/49128—Assembling formed circuit to base
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49169—Assembling electrical component directly to terminal or elongated conductor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/5313—Means to assemble electrical device
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/5313—Means to assemble electrical device
- Y10T29/53165—Magnetic memory device
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/5313—Means to assemble electrical device
- Y10T29/53174—Means to fasten electrical component to wiring board, base, or substrate
- Y10T29/53178—Chip component
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/5313—Means to assemble electrical device
- Y10T29/53174—Means to fasten electrical component to wiring board, base, or substrate
- Y10T29/53183—Multilead component
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Measuring Magnetic Variables (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Hall/Mr Elements (AREA)
Description
以下、この発明に係る磁気検出装置の一実施の形態を図に基づいて説明する。
図1はこの発明の実施の形態1の磁気検出装置の側断面図である。
この磁気検出装置は、被検出体である歯車状の磁性回転体(図示せず)に対向して配置され磁界を発生する磁石1を含む樹脂成形体2と、磁性回転体の回転に伴い変化する前記磁界の変化を検出する磁気検出手段である磁気抵抗素子が組み込まれたICチップ3が内蔵されたICパッケージ4と、ICパッケージ4および樹脂成形体2を樹脂封止した外装樹脂18とを備えている。
第1の樹脂部8の下面には突出した圧入部9が形成されている。また、第1の樹脂部8の下面には、図2に示すように圧入部9と同方向に突出した一対のピン10が形成されている。
第1のリードフレーム6の端子には、図3および図4に示すように、プロービング部16が設けられている。このプロービング部16の周囲には樹脂がプロービング部16に侵入するのを防止する侵入防止手段である溝17が形成されている。
先ず、最初に、磁気抵抗素子の特性ばらつきを調整する。これは従来の磁気検出装置でも行っていたもので、磁気抵抗素子が組み込まれたICチップ3に対して行われる。この調整工程により後工程で信号調整のために必要とされるプローブ部の数が削減される。
図5は磁気検出装置の回路図である。第1の磁気抵抗素子20、第2の磁気抵抗素子21で構成されたブリッジ回路22が差動増幅回路23に接続されている。差動増幅回路23は、ブリッジ回路22の中点24に発生した電圧を所定の増幅を行った電圧を出力する。この差動増幅回路23の出力は、比較回路25において2値に変換され、出力回路26を経て最終的には出力端子30からパルス波として出力される。この時、第1の磁気抵抗素子20と第2の磁気抵抗素子21との抵抗値に差があれば、この差も増幅されてしまい、差動増幅回路23の出力と比較回路25の比較レベルが交差しない状態が発生してしまう。
このような状態を回避するために差動増幅回路23の基準電圧を調整する。具体的には基準電圧を決定する差動増幅回路23の抵抗調整部27の抵抗値を調整して、第1の磁気抵抗素子20、第2の磁気抵抗素子21の特性ばらつきの調整を行う。
具体的には比較回路25の比較レベルを決定する抵抗調整部28の抵抗値を調整する。この比較回路25の抵抗調整部28、先に説明した差動増幅回路23の抵抗調整部27は共にICチップ3内の抵抗調整部である。この抵抗調整部の抵抗調整を行うことで、例えばトリマブル抵抗といった追加の抵抗調整用部品が不要となり、小型化が確保される。
ツェナーザッピング法はプロービング部16間に電流を流すことで調整が可能なため、抵抗調整部28を露出させる必要は無く、ICチップ3を樹脂封止したままで抵抗調整部28の抵抗値を調整することができる。
これに対しては、プロービング部16の周囲に溝17が形成されているので、この溝17がプロービング部16に対する樹脂の侵入を防止し、プロービング部16の露出が確保され、安定した抵抗調整が可能となる。
最後に、一体化されたICパッケージ4および樹脂成形体2をインサート成型でコネクタ端子11を露出した状態で樹脂封止することで、外部が外装樹脂18で覆われた磁気検出装置が製造される。
また、上記実施の形態では磁気検出手段として磁気抵抗素子20、21を用いたが、勿論このものに限定されるものではなく、磁界の変化を電圧に変えるホール素子であってもよい。
Claims (6)
- 被検出体に対向して配置され磁界を発生する磁石を有する樹脂成形体と、
前記被検出体の移動に伴う前記磁界の変化を検出する磁気検出手段を組み込んだICチップ、およびこのICチップが搭載されたリードフレームが樹脂封止されたICパッケージとを備え、
前記リードフレームは、前記ICチップに組み込まれた調整抵抗部の抵抗値を調整する調整用端子としてのプロービング部を有し、
前記ICパッケージは、前記樹脂成形体に前記ICパッケージを組み付けて一体化した状態で前記プロービング部が外部に露出する開口を有し、
前記開口を通じて前記プロービング部に電流を流すことにより前記調整抵抗部の抵抗値を調整するものであって、
前記リードフレームに、前記プロービング部の周囲を取り囲むようにして樹脂が前記プロービング部に侵入するのを防止する侵入防止手段が設けられていることを特徴とする磁気検出装置。 - 前記侵入防止手段は、溝である請求項1に記載の磁気検出装置。
- 前記侵入防止手段は、壁である請求項1に記載の磁気検出装置。
- 前記樹脂成形体および前記ICパッケージには、樹脂成形体およびICパッケージの相対位置を決め、かつ一体化する位置決め・一体化手段が設けられている請求項1から3の何れか1項に記載の磁気検出装置。
- 前記リードフレームは、非磁性部材で構成されている請求項1から4の何れか1項に記載の磁気検出装置。
- 前記磁気検出手段は、磁気抵抗素子である請求項1から5の何れか1項に記載の磁気検出装置。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003280313A JP3839802B2 (ja) | 2003-07-25 | 2003-07-25 | 磁気検出装置 |
US10/704,672 US7117585B2 (en) | 2003-07-25 | 2003-11-12 | Magnetic detection apparatus with resin infiltration prevention |
KR1020030086638A KR100710560B1 (ko) | 2003-07-25 | 2003-12-02 | 자기 검출 장치 |
DE10357809A DE10357809B4 (de) | 2003-07-25 | 2003-12-10 | Magnetische Erfassungsvorrichtung und Verfahren zu dessen Herstellung |
KR1020060058000A KR100740765B1 (ko) | 2003-07-25 | 2006-06-27 | 자기 검출 장치 |
US11/536,106 US7441322B2 (en) | 2003-07-25 | 2006-09-28 | Method of manufacturing a magnetic detection apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003280313A JP3839802B2 (ja) | 2003-07-25 | 2003-07-25 | 磁気検出装置 |
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JP2005043328A JP2005043328A (ja) | 2005-02-17 |
JP3839802B2 true JP3839802B2 (ja) | 2006-11-01 |
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JP2003280313A Expired - Lifetime JP3839802B2 (ja) | 2003-07-25 | 2003-07-25 | 磁気検出装置 |
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US (2) | US7117585B2 (ja) |
JP (1) | JP3839802B2 (ja) |
KR (2) | KR100710560B1 (ja) |
DE (1) | DE10357809B4 (ja) |
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US7141966B2 (en) * | 2004-07-01 | 2006-11-28 | Denso Corporation | Rotation detecting apparatus |
JP4909542B2 (ja) * | 2005-07-26 | 2012-04-04 | アルプス電気株式会社 | 筐体及び筐体の製造方法 |
JP4645477B2 (ja) * | 2006-02-27 | 2011-03-09 | 株式会社デンソー | 回転検出装置 |
DE102007051870A1 (de) * | 2007-10-30 | 2009-05-07 | Robert Bosch Gmbh | Modulgehäuse und Verfahren zur Herstellung eines Modulgehäuses |
KR100991808B1 (ko) * | 2008-07-02 | 2010-11-04 | 한국하니웰 주식회사 | 자동차용 캠 포지션 센서 제조방법 |
WO2010026659A1 (ja) * | 2008-09-08 | 2010-03-11 | 三菱電機株式会社 | 過電流検出回路、インバータ、圧縮機、及び空気調和機、並びに過電流検出回路の調整方法 |
JP5523389B2 (ja) * | 2011-05-18 | 2014-06-18 | 三菱電機株式会社 | 磁気検出装置 |
EP2549243A3 (de) * | 2011-07-14 | 2017-08-23 | Hirschmann Automotive GmbH | Linearweg- und Drehwinkelsensorsysteme in Leadframe-Ausführung |
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DE19819265C1 (de) * | 1998-04-30 | 1999-08-19 | Micronas Intermetall Gmbh | Verfahren zum Parametrieren einer integrierten Schaltungsanordnung und integrierte Schaltungsanordnung hierfür |
DE19843350A1 (de) | 1998-09-22 | 2000-03-23 | Bosch Gmbh Robert | Elektronisches Bauelement |
FR2792380B1 (fr) | 1999-04-14 | 2001-05-25 | Roulements Soc Nouvelle | Roulement pourvu d'un dispositif de detection des impulsions magnetiques issues d'un codeur, ledit dispositif comprenant plusieurs elements sensibles alignes |
FR2794504B1 (fr) | 1999-06-04 | 2001-07-13 | Roulements Soc Nouvelle | Roulement equipe d'un dispositif capteur d'informations |
JP3534017B2 (ja) * | 1999-10-18 | 2004-06-07 | 株式会社デンソー | センサ装置及びセンサ装置の製造方法 |
JP2001255548A (ja) * | 2000-03-09 | 2001-09-21 | Nec Corp | 液晶表示装置用信号処理基板 |
US20030107366A1 (en) | 2001-12-06 | 2003-06-12 | Busch Nicholas F. | Sensor with off-axis magnet calibration |
JP3720801B2 (ja) * | 2002-10-24 | 2005-11-30 | 三菱電機株式会社 | 磁気検出装置 |
-
2003
- 2003-07-25 JP JP2003280313A patent/JP3839802B2/ja not_active Expired - Lifetime
- 2003-11-12 US US10/704,672 patent/US7117585B2/en not_active Expired - Lifetime
- 2003-12-02 KR KR1020030086638A patent/KR100710560B1/ko active IP Right Grant
- 2003-12-10 DE DE10357809A patent/DE10357809B4/de not_active Expired - Lifetime
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2006
- 2006-06-27 KR KR1020060058000A patent/KR100740765B1/ko active IP Right Grant
- 2006-09-28 US US11/536,106 patent/US7441322B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
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KR100740765B1 (ko) | 2007-07-19 |
KR20050013044A (ko) | 2005-02-02 |
US20050015968A1 (en) | 2005-01-27 |
US20070163104A1 (en) | 2007-07-19 |
JP2005043328A (ja) | 2005-02-17 |
KR20060085609A (ko) | 2006-07-27 |
US7117585B2 (en) | 2006-10-10 |
US7441322B2 (en) | 2008-10-28 |
DE10357809B4 (de) | 2006-05-11 |
DE10357809A1 (de) | 2005-02-24 |
KR100710560B1 (ko) | 2007-04-24 |
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