Inventor · disambiguated record
Seiji Yamaguchi
Also filed as: YAMAGUCHI SEIJI
148 granted patents·22 pending applications·7,057 citations·filing 1985–2022
99Inventor score
Files withMATSUSHITA ELECTRIC INDUSTRIAL CO LTD33CANON KK30HONDA MOTOR CO LTD19TOYODA GOSEI KK16OLYMPUS OPTICAL CO11
Top patents by PatentIndex Score
170 records- 0199US7534002B2Lighting deviceTOYODA GOSEI KK·Filed 2006·Granted May 19, 2009·140 cites·16 claims
- 0299US6131007ADeveloping device, process cartridge and electrophotographic image forming apparatusCANON KK·Filed 1998·Granted Oct 10, 2000·183 cites·31 claims
- 0398US6978099B2Developing apparatus, process cartridge, and electrophotographic image forming apparatus including an elastic member preventing a gap between a developing agent carrier and a layer thickness limiter from changing, and an electrophotographic image forming apparatus detachably mounting such process cartridgeCANON KK·Filed 2003·Granted Dec 20, 2005·122 cites·12 claims
- 0498US6834175B2Developer agitating memberCANON KK·Filed 2003·Granted Dec 21, 2004·119 cites·17 claims
- 0597US5339799AMedical system for reproducing a state of contact of the treatment section in the operation unitOLYMPUS OPTICAL CO·Filed 1992·Granted Aug 23, 1994·2.3k cites·15 claims
- 0697US5233682AVacuum cleaner with fuzzy controlMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1991·Granted Aug 3, 1993·226 cites·18 claims
- 0796US5251358AVacuum cleaner with fuzzy logicMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1991·Granted Oct 12, 1993·213 cites·5 claims
- 0895US7989236B2Method of making phosphor containing glass plate, method of making light emitting deviceTOYODA GOSEI KK·Filed 2008·Granted Aug 2, 2011·37 cites·18 claims
- 0995US7429750B2Solid-state element and solid-state element deviceTOYODA GOSEI KK·Filed 2005·Granted Sep 30, 2008·31 cites·14 claims
- 1095US7257353B2Developing apparatusCANON KK·Filed 2005·Granted Aug 14, 2007·23 cites·11 claims
- 1195US6488475B2Electric blower and electric cleaner with an air cooled power device situated between the impeller and motorMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Dec 3, 2002·81 cites·36 claims
- 1295US5389898APhase locked loop having plural selectable voltage controlled oscillatorsMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1993·Granted Feb 14, 1995·133 cites·11 claims
- 1394US5216777AFuzzy control apparatus generating a plurality of membership functions for determining a drive condition of an electric vacuum cleanerMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1991·Granted Jun 8, 1993·187 cites·3 claims
- 1494US5182833AVacuum cleanerMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1990·Granted Feb 2, 1993·167 cites·21 claims
- 1594US5090259APipe-inspecting apparatus having a self propelled unitOLYMPUS OPTICAL CO·Filed 1990·Granted Feb 25, 1992·147 cites·56 claims
- 1693US7603065B2Image forming apparatus, cartridge, storage device and developer supplying methodCANON KK·Filed 2006·Granted Oct 13, 2009·14 cites·8 claims
- 1793US7035573B2Developing apparatus having developer carrying screw with a plurality of inclination anglesCANON KK·Filed 2003·Granted Apr 25, 2006·44 cites·18 claims
- 1893US6421516B1Developing device and image forming apparatus having a restricted developer surface level featureCANON KK·Filed 2000·Granted Jul 16, 2002·47 cites·37 claims
- 1993US5144715AVacuum cleaner and method of determining type of floor surface being cleaned therebyMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1990·Granted Sep 8, 1992·137 cites·7 claims
- 2092US7181147B2Image forming apparatus, developing unit and storage mediumCANON KK·Filed 2005·Granted Feb 20, 2007·12 cites·10 claims
- 2192US6947677B2Image forming apparatus with developing apparatus and method thereofCANON KK·Filed 2003·Granted Sep 20, 2005·40 cites·18 claims
- 2292US6343193B1Process cartridge and image forming apparatus including a developer remaining amount detecting memberCANON KK·Filed 1997·Granted Jan 29, 2002·58 cites·46 claims
- 2391US6324369B1Developing apparatus, process cartridge and image forming apparatusCANON KK·Filed 2000·Granted Nov 27, 2001·37 cites·21 claims
- 2490US8294160B2Light emitting device including a sealing portion, and method of making the sameSUEHIRO YOSHINOBU·Filed 2011·Granted Oct 23, 2012·10 cites·19 claims
- 2590US7825575B2Solid-state element device and light-emitting apparatus using sameSUMITA OPTICAL GLASS·Filed 2006·Granted Nov 2, 2010·25 cites·20 claims
- 2690US7667223B2Solid-state optical deviceTOYODA GOSEI KK·Filed 2008·Granted Feb 23, 2010·13 cites·21 claims
- 2790US6496664B1Image forming apparatus comprising storing means for storing information that a setting operation is performedCANON KK·Filed 2000·Granted Dec 17, 2002·37 cites·19 claims
- 2889US9969173B2Ink cartridge and inkjet recording apparatusKONICA MINOLTA INC·Filed 2015·Granted May 15, 2018·3 cites·5 claims
- 2988US6181145B1Probe cardMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1998·Granted Jan 30, 2001·68 cites·17 claims
- 3088US5433740AMethod and apparatus for thermotherapyOLYMPUS OPTICAL CO·Filed 1993·Granted Jul 18, 1995·298 cites·14 claims
- 3187US7470926B2Solid-state optical deviceTOYODA GOSEI KK·Filed 2005·Granted Dec 30, 2008·11 cites·8 claims
- 3286US5682585ADeveloping apparatus generating electric field between developer carrying member and developer layer regulating memberCANON KK·Filed 1994·Granted Oct 28, 1997·32 cites·18 claims
- 3386US5627583AElectroendoscope apparatusOLYMPUS OPTICAL CO·Filed 1994·Granted May 6, 1997·76 cites·11 claims
- 3485US7491981B2Light-emitting device and glass seal member thereforTOYODA GOSEI KK·Filed 2005·Granted Feb 17, 2009·13 cites·13 claims
- 3585USD426174SMotorcycleHONDA MOTOR CO LTD·Filed 1998·Granted Jun 6, 2000·31 cites·1 claims
- 3685US5614943ADissimilar endoscopes usable with a common control unitOLYMPUS OPTICAL CO·Filed 1995·Granted Mar 25, 1997·92 cites·2 claims
- 3785US5475825ASemiconductor device having combined fully associative memoriesMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1992·Granted Dec 12, 1995·61 cites·8 claims
- 3884US6640060B2Image forming apparatus with developer density and remaining amount detectionCANON KK·Filed 2002·Granted Oct 28, 2003·23 cites·20 claims
- 3983US9574045B2Epoxy resin composition, epoxy resin, and cured productASAHI KASEI E MATERIALS CORP·Filed 2013·Granted Feb 21, 2017·4 cites·9 claims
- 4083US7341364B2Tail lamp structure for vehiclesHONDA MOTOR CO LTD·Filed 2005·Granted Mar 11, 2008·13 cites·19 claims
- 4183US5239215ALarge scale integrated circuit configured to eliminate clock signal skew effectsMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1992·Granted Aug 24, 1993·40 cites·15 claims
- 4282US4672584ACMOS integrated circuitMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1985·Granted Jun 9, 1987·44 cites·16 claims
- 4381US7969741B2Substrate structurePANASONIC CORP·Filed 2006·Granted Jun 28, 2011·11 cites·7 claims
- 4481US6381431B1Charging apparatus including a magnetic brush with local anti-contamination featureCANON KK·Filed 2000·Granted Apr 30, 2002·19 cites·10 claims
- 4580US7634215B2Developing apparatusCANON KK·Filed 2007·Granted Dec 15, 2009·6 cites·15 claims
- 4680US6151467ADeveloping apparatusCANON KK·Filed 1998·Granted Nov 21, 2000·29 cites·6 claims
- 4778US7872410B2Light emitting device and light emitterTOYODA GOSEI KK·Filed 2008·Granted Jan 18, 2011·8 cites·24 claims
- 4878US5327372ASemiconductor memory deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1993·Granted Jul 5, 1994·46 cites·8 claims
- 4977USD470799SMotorcycleHONDA MOTOR CO LTD·Filed 2001·Granted Feb 25, 2003·21 cites·1 claims
- 5076US7346298B2Developing device, process cartridge, and electrophotographic image-forming apparatusCANON KK·Filed 2005·Granted Mar 18, 2008·5 cites·24 claims
Showing the top 50 of 170 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →