Inventor · disambiguated record
Koji Ohtsuka
Also filed as: OHTSUKA KOJI
23 granted patents·1 pending application·1,288 citations·filing 1988–2007
97Inventor score
Files withSANKEN ELECTRIC CO LTD21GKN DRIVELINE TORQUE TECH KK1NISSAN MOTOR1PETROLEUM ENERGY CENTER FOUND1
Top patents by PatentIndex Score
24 records- 0197US7323723B2Semiconductor light-emitting device using phosphors for performing wavelength conversionSANKEN ELECTRIC CO LTD·Filed 2002·Granted Jan 29, 2008·244 cites·16 claims
- 0296US6683448B1Large current detector having a hall-effect deviceSANKEN ELECTRIC CO LTD·Filed 2000·Granted Jan 27, 2004·109 cites·15 claims
- 0395US6462531B1Current detector having a hall-effect deviceSANKEN ELECTRIC CO LTD·Filed 2000·Granted Oct 8, 2002·107 cites·12 claims
- 0495US6424018B1Semiconductor device having a hall-effect elementSANKEN ELECTRIC CO LTD·Filed 1999·Granted Jul 23, 2002·115 cites·7 claims
- 0593US6841989B2Hall-effect current detectorSANKEN ELECTRIC CO LTD·Filed 2002·Granted Jan 11, 2005·84 cites·13 claims
- 0692US6812687B1Semiconductor current detector of improved noise immunitySANKEN ELECTRIC CO LTD·Filed 2000·Granted Nov 2, 2004·79 cites·5 claims
- 0792US6797153B1Catalyst for hydrocracking of heavy oils and method of hydrocracking heavy oilsPETROLEUM ENERGY CENTER FOUND·Filed 2000·Granted Sep 28, 2004·107 cites·22 claims
- 0892US6791313B2Electrical current detector having a U-shaped current path and hall-effect deviceSANKEN ELECTRIC CO LTD·Filed 2003·Granted Sep 14, 2004·65 cites·6 claims
- 0992US6759841B2Hall-effect current detectorSANKEN ELECTRIC CO LTD·Filed 2002·Granted Jul 6, 2004·83 cites·7 claims
- 1092US6545457B2Current detector utilizing hall effectSANKEN ELECTRIC CO LTD·Filed 2001·Granted Apr 8, 2003·98 cites·6 claims
- 1190US7176480B2Light-emitting semiconductor device having a quantum well active layer, and method of fabricationSANKEN ELECTRIC CO LTD·Filed 2005·Granted Feb 13, 2007·26 cites·9 claims
- 1287US7780565B2Differential deviceGKN DRIVELINE TORQUE TECH KK·Filed 2007·Granted Aug 24, 2010·14 cites·9 claims
- 1377US5027166AHigh voltage, high speed Schottky semiconductor device and method of fabricationSANKEN ELECTRIC CO LTD·Filed 1988·Granted Jun 25, 1991·35 cites·19 claims
- 1466US6890791B2Compound semiconductor substrates and method of fabricationSANKEN ELECTRIC CO LTD·Filed 2004·Granted May 10, 2005·10 cites·3 claims
- 1558US5081510AHigh-voltage semiconductor device having a rectifying barrier, and method of fabricationSANKEN ELECTRIC CO LTD·Filed 1989·Granted Jan 14, 1992·14 cites·20 claims
- 1657US5112774AMethod of fabricating a high-voltage semiconductor device having a rectifying barrierSANKEN ELECTRIC CO LTD·Filed 1991·Granted May 12, 1992·15 cites·3 claims
- 1753US5158909AMethod of fabricating a high voltage, high speed Schottky semiconductor deviceSANKEN ELECTRIC CO LTD·Filed 1990·Granted Oct 27, 1992·14 cites·2 claims
- 1852US5814838ALight emitting semiconductor element with ZN dopingSANKEN ELECTRIC CO LTD·Filed 1997·Granted Sep 29, 1998·19 cites·5 claims
- 1950US5075740AHigh speed, high voltage schottky semiconductor deviceSANKEN ELECTRIC CO LTD·Filed 1991·Granted Dec 24, 1991·13 cites·8 claims
- 2047US5148240AHigh voltage, high speed schottky semiconductor device and method of fabricationSANKEN ELECTRIC CO LTD·Filed 1990·Granted Sep 15, 1992·10 cites·8 claims
- 2144US5221638AMethod of manufacturing a Schottky barrier semiconductor deviceSANKEN ELECTRIC CO LTD·Filed 1992·Granted Jun 22, 1993·15 cites·4 claims
- 2241US5006483AFabrication of P-N junction semiconductor deviceSANKEN ELECTRIC CO LTD·Filed 1990·Granted Apr 9, 1991·6 cites·4 claims
- 2341US4980749AP-N junction semiconductor device and method of fabricationSANKEN ELECTRIC CO LTD·Filed 1989·Granted Dec 25, 1990·6 cites·15 claims
- 2438US2002195887A1Cooling structure for rotating electric machineNISSAN MOTOR·Filed 2002·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →