Inventor · disambiguated record
Junichi Kagawa
Also filed as: KAGAWA JUNICHI
28 granted patents·815 citations·filing 1979–2016
97Inventor score
Top patents by PatentIndex Score
28 records- 0195US4670684ASpark plugNGK SPARK PLUG CO·Filed 1984·Granted Jun 2, 1987·79 cites·3 claims
- 0294US4743793ASpark plugNGK SPARK PLUG CO·Filed 1986·Granted May 10, 1988·78 cites·12 claims
- 0392US6707237B2Spark plugNGK SPARK PLUG CO·Filed 2002·Granted Mar 16, 2004·39 cites·6 claims
- 0492US5461276AElectrode for a spark plug in which a firing tip is laser welded to a front end thereofNGK SPARK PLUG CO·Filed 1995·Granted Oct 24, 1995·49 cites·7 claims
- 0589US4786267ASpark plugNGK SPARK PLUG CO·Filed 1988·Granted Nov 22, 1988·54 cites·5 claims
- 0689US4329174ANickel alloy for spark plug electrodesNGK SPARK PLUG CO·Filed 1979·Granted May 11, 1982·28 cites·6 claims
- 0784US4659960AElectrode structure for a spark plugNGK SPARK PLUG CO·Filed 1985·Granted Apr 21, 1987·51 cites·5 claims
- 0883US5866973ASpark plug having a platinum tip on an outer electrodeNGK SPARK PLUG CO·Filed 1997·Granted Feb 2, 1999·35 cites·5 claims
- 0982US4904216AProcess for producing the center electrode of spark plugNGK SPARK PLUG CO·Filed 1984·Granted Feb 27, 1990·34 cites·4 claims
- 1080US5574329ASpark plug and a method of making the same for an internal combustion engineNGK SPARK PLUG CO·Filed 1994·Granted Nov 12, 1996·43 cites·7 claims
- 1178US6064143AMultielectrode spark plugNGK SPARK PLUG CO·Filed 1996·Granted May 16, 2000·31 cites·13 claims
- 1276US5461210AMethod of manufacturing a spark plug electrodeNGK SPARK PLUG CO·Filed 1994·Granted Oct 24, 1995·35 cites·10 claims
- 1375US5793793ASpark plugNGK SPARK PLUG CO·Filed 1997·Granted Aug 11, 1998·26 cites·3 claims
- 1474US5556315AMethod of making a spark plug for an internal combustion engineNGK SPARK PLUG CO·Filed 1995·Granted Sep 17, 1996·23 cites·10 claims
- 1573US5347855AMisfire detector device for use in an internal combustion engineNGK SPARK PLUG CO·Filed 1993·Granted Sep 20, 1994·18 cites·7 claims
- 1672US4914343ASpark plug with counterelectrode having plural apertures in flat portion thereofNGK SPARK PLUG CO·Filed 1988·Granted Apr 3, 1990·29 cites·4 claims
- 1769US5497045ASpark plug having a noble metal electrode portionNGK SPARK PLUG CO·Filed 1993·Granted Mar 5, 1996·27 cites·3 claims
- 1869US5189333AMulti-gap spark plug for an internal combustion engineNGK SPARK PLUG CO·Filed 1991·Granted Feb 23, 1993·34 cites·2 claims
- 1968US5793151ACreeping discharge spark plugNGK SPARK PLUG CO·Filed 1996·Granted Aug 11, 1998·23 cites·15 claims
- 2056US10501950B2Method for injecting injection filler into concrete structure and syringe thereforSG ENG CORPORATION·Filed 2016·Granted Dec 10, 2019·1 cites·8 claims
- 2155US5347856AMisfire detector device for use in an internal combustion engineNGK SPARK PLUG CO·Filed 1993·Granted Sep 20, 1994·10 cites·6 claims
- 2255US4814665ACenter electrode structure for spark plugNGK SPARK PLUG CO·Filed 1987·Granted Mar 21, 1989·15 cites·2 claims
- 2351US5144188ASpark plug for internal combustion engineNGK SPARK PLUG CO·Filed 1991·Granted Sep 1, 1992·15 cites·4 claims
- 2446US4838218ACeramic valve supporting structure in use for internal combustion engineNGK SPARK PLUG CO·Filed 1987·Granted Jun 13, 1989·11 cites·20 claims
- 2545US5478265ASpark plug and a method of making of sameNGK SPARK PLUG CO·Filed 1995·Granted Dec 26, 1995·7 cites·3 claims
- 2645US4881403ASpark plug with pressure sensorNGK SPARK PLUG CO·Filed 1988·Granted Nov 21, 1989·11 cites·7 claims
- 2744US4808135ACenter electrode structure for spark plugNGK SPARK PLUG CO·Filed 1987·Granted Feb 28, 1989·9 cites·5 claims
- 2838USRE43758ESpark plug with alloy chipMATSUTANI WATARU·Filed 2006·Granted Oct 23, 2012·0 cites·13 claims
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