Inventor · disambiguated record
Yoshihisa Okita
Also filed as: OKITA YOSHIHISA
15 granted patents·533 citations·filing 1987–2001
94Inventor score
Top patents by PatentIndex Score
15 records- 0196US6323634B1Magnetic sensor apparatus, current sensor apparatus and magnetic sensor elementTDK CORP·Filed 2000·Granted Nov 27, 2001·103 cites·32 claims
- 0296US6316931B1Magnetic sensor apparatus and current sensor apparatusTDK CORP·Filed 2000·Granted Nov 13, 2001·104 cites·67 claims
- 0393US6154379AElectric power conversion deviceTDK CORP·Filed 1999·Granted Nov 28, 2000·146 cites·16 claims
- 0479US6172882B1Partial resonance PWM converterTDK CORP·Filed 1999·Granted Jan 9, 2001·59 cites·14 claims
- 0575US6351107B1Driving device of switching element in power conversion device using current control semiconductor switching elementTDK CORP·Filed 2000·Granted Feb 26, 2002·18 cites·9 claims
- 0665US6438004B1Power conversion apparatus utilizing soft switching resonant snubber circuitryTDK CORP·Filed 2001·Granted Aug 20, 2002·20 cites·26 claims
- 0762US6353543B2Switching circuit of power conversion apparatusTDK CORP·Filed 2001·Granted Mar 5, 2002·16 cites·6 claims
- 0856US4974045ABi-polar transistor structureOKI ELECTRIC IND CO LTD·Filed 1989·Granted Nov 27, 1990·17 cites·12 claims
- 0955US4866000AFabrication method for semiconductor integrated circuitsOKI ELECTRIC IND CO LTD·Filed 1988·Granted Sep 12, 1989·16 cites·27 claims
- 1045US6208541B1PWM inverter apparatusTDK CORP·Filed 2000·Granted Mar 27, 2001·6 cites·5 claims
- 1143US5219768AMethod for fabricating a semiconductor deviceOKI ELECTRIC IND CO LTD·Filed 1990·Granted Jun 15, 1993·10 cites·6 claims
- 1242US6414854B2Driving device and method of switching element in power conversion apparatus using current-controlled semiconductor switching elementTDK CORP·Filed 2001·Granted Jul 2, 2002·5 cites·13 claims
- 1341US6614667B1Method and apparatus for driving switching element in power converterTDK CORP·Filed 2001·Granted Sep 2, 2003·2 cites·10 claims
- 1435US5234844AProcess for forming bipolar transistor structureOKI ELECTRIC IND CO LTD·Filed 1991·Granted Aug 10, 1993·5 cites·22 claims
- 1534US4749663AProcess of fabricating a semiconductor IC involving simultaneous sputter etching and depositionOKI ELECTRIC IND CO LTD·Filed 1987·Granted Jun 7, 1988·6 cites·6 claims
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