Inventor · disambiguated record
Seiji Tomita
Also filed as: TOMITA SEIJI
29 granted patents·9 pending applications·202 citations·filing 1979–2015
96Inventor score
Top patents by PatentIndex Score
38 records- 0189US8685543B2Material for organic electroluminescent devices and organic electroluminescent devices made by using the sameIWAKUMA TOSHIHIRO·Filed 2012·Granted Apr 1, 2014·4 cites·22 claims
- 0287US8911886B2Material for organic electroluminescent devices and organic electroluminescent devices made by using the sameIDEMITSU KOSAN CO·Filed 2013·Granted Dec 16, 2014·4 cites·12 claims
- 0385US4238808ATape stop detecting mechanismTOKYO SHIBAURA ELECTRIC CO·Filed 1979·Granted Dec 9, 1980·26 cites·18 claims
- 0483US7990046B2Material for organic electroluminescent devices and organic electroluminescent devices made by using the sameIDEMITSU KOSAN CO·Filed 2003·Granted Aug 2, 2011·9 cites·11 claims
- 0582US8741450B2Material for organic electroluminescence devices and organic electroluminescence device using the materialIWAKUMA TOSHIHIRO·Filed 2012·Granted Jun 3, 2014·4 cites·16 claims
- 0680US8580391B2Material for organic electroluminescence devices and organic electroluminescence device using the materialIWAKUMA TOSHIHIRO·Filed 2005·Granted Nov 12, 2013·6 cites·25 claims
- 0778US6889563B2Position measuring device using change in inductance of coil, float-type flowmeter, and position measuring methodSMC KK·Filed 2003·Granted May 10, 2005·27 cites·18 claims
- 0877US8123234B2Chuck apparatusTOMITA SEIJI·Filed 2007·Granted Feb 28, 2012·9 cites·9 claims
- 0977US4360174ACassette tape recorderTOKYO SHIBAURA ELECTRIC CO·Filed 1980·Granted Nov 23, 1982·21 cites·8 claims
- 1069US7118507B2Automatic reduction-ratio changing apparatusSMC KK·Filed 2003·Granted Oct 10, 2006·13 cites·20 claims
- 1165US7829204B2Material for organic electroluminescent device and organic electroluminescent device using sameIDEMITSU KOSAN CO·Filed 2004·Granted Nov 9, 2010·8 cites·3 claims
- 1264US8580398B2Material for organic electroluminescent devices and organic electroluminescent devices made by using the sameIWAKUMA TOSHIHIRO·Filed 2011·Granted Nov 12, 2013·2 cites·13 claims
- 1363USRE46368EMaterial for organic electroluminescent devices and organic electroluminescent devices made by using the sameIDEMITSU KOSAN CO·Filed 2015·Granted Apr 18, 2017·0 cites·33 claims
- 1462US2012298975A1Material for organic electroluminescence devices and organic electroluminescence device using the materialIWAKUMA TOSHIHIRO·Filed 2012·Application pending·0 cites
- 1552US6102012AAir heater for air cleanerHONDA MOTOR CO LTD·Filed 1999·Granted Aug 15, 2000·17 cites·21 claims
- 1650US4532565ATape recorderTOKYO SHIBAURA ELECTRIC CO·Filed 1982·Granted Jul 30, 1985·5 cites·6 claims
- 1749US4593331ATape playerTOKYO SHIBAURA ELECTRIC CO·Filed 1983·Granted Jun 3, 1986·6 cites·19 claims
- 1846US4669012AHead apparatus for a cassette tape recorderTOSHIBA KK·Filed 1985·Granted May 26, 1987·5 cites·2 claims
- 1946US4636895ATape head apparatus for a cassette tape recorderTOKYO SHIBAURA ELECTRIC CO·Filed 1985·Granted Jan 13, 1987·5 cites·3 claims
- 2044US2004086745A1Material for organic electroluminescence devices and organic electroluminescence device using the materialIDEMITSU KOSAN CO·Filed 2003·Application pending·0 cites
- 2143US4542430ATape recorderTOKYO SHIBAURA ELECTRIC CO·Filed 1982·Granted Sep 17, 1985·5 cites·14 claims
- 2243US2006163542A1Metal-complex compound and organic electroluminescence device using the compoundIDEMITSU KOSAN CO·Filed 2005·Application pending·0 cites
- 2343US2007190355A1Material for organic electroluminescence device and organic electroluminescence device utilizing the sameIDEMITSU KOSAN CO·Filed 2005·Application pending·0 cites
- 2441US4587583ATape playerTOKYO SHIBAURA ELECTRIC CO·Filed 1982·Granted May 6, 1986·3 cites·16 claims
- 2541US2006251918A1Organic electroluminescent device material and organic electroluminescent device using sameIWAKUMA TOSHIHIRO·Filed 2003·Application pending·0 cites
- 2639US5274523AMechanism for a tray type cassette loading deviceTOSHIBA KK·Filed 1991·Granted Dec 28, 1993·4 cites·8 claims
- 2739US2005158578A1Material for organic electroluminescent element and organic electroluminescent element employing the sameFiled 2003·Application pending·0 cites
- 2837US5105319AMagnetic recording/reproducing apparatus in which tape cassettes of different sizes can be mountedTOSHIBA KK·Filed 1990·Granted Apr 14, 1992·5 cites·8 claims
- 2937US2006051613A1Material for organic electroluminescent device and organic electroluminescent device using sameTOMITA SEIJI·Filed 2004·Application pending·0 cites
- 3036US5109309ACassette loading device for loading tape cassette having different shapes and different dimensions to a tape driving positionTOSHIBA KK·Filed 1990·Granted Apr 28, 1992·4 cites·3 claims
- 3135US4625251ATape recorderTOKYO SHIBAURA ELECTRIC CO·Filed 1982·Granted Nov 25, 1986·2 cites·1 claims
- 3234US5478023ATape driving apparatusTOSHIBA KK·Filed 1993·Granted Dec 26, 1995·2 cites·20 claims
- 3334US4669006ATape playerTOKYO SHIBAURA ELECTRIC CO·Filed 1985·Granted May 26, 1987·2 cites·2 claims
- 3434US2004058957A1Benzothiophene derivatives and herbicidal compositions containing the sameFiled 2001·Application pending·0 cites
- 3533US4492995ATape cassette loading and ejection deviceTOKYO SHIBAURA ELECTRIC CO·Filed 1984·Granted Jan 8, 1985·2 cites·7 claims
- 3633US2006141284A1Material for organic electroluminescence element, and organic electroluminescence element using the sameTOMITA SEIJI·Filed 2003·Application pending·0 cites
- 3732US4646187ACassette tape recorderTOKYO SHIBAURA ELECTRIC CO·Filed 1985·Granted Feb 24, 1987·2 cites·12 claims
- 3828US4519558ATape playerTOKYO SHIBAURA ELECTRIC CO·Filed 1983·Granted May 28, 1985·0 cites·17 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →