Inventor · disambiguated record
Naoto Okabe
Also filed as: OKABE NAOTO
20 granted patents·542 citations·filing 1984–1998
96Inventor score
Top patents by PatentIndex Score
20 records- 0194US5519245AInsulated gate bipolar transistor with reverse conducting currentNIPPON DENSO CO·Filed 1993·Granted May 21, 1996·128 cites·37 claims
- 0284US5510634AInsulated gate bipolar transistorNIPPON DENSO CO·Filed 1994·Granted Apr 23, 1996·60 cites·27 claims
- 0383US5723882AInsulated gate field effect transistor having guard ring regionsNIPPON DENSO CO·Filed 1995·Granted Mar 3, 1998·60 cites·19 claims
- 0477US6107661ASemiconductor device and method of manufacturing sameNIPPON DENSO CO·Filed 1996·Granted Aug 22, 2000·41 cites·11 claims
- 0576US5545908AVertical type insulated-gate semiconductor deviceNIPPON DENSO CO·Filed 1992·Granted Aug 13, 1996·53 cites·30 claims
- 0674US5169793AMethod of making an insulated gate bipolar transistor having gate shield regionNIPPON DENSO CO·Filed 1991·Granted Dec 8, 1992·33 cites·2 claims
- 0768US4653443AThermoelectric generating composite functioning apparatusNIPPON DENSO CO·Filed 1984·Granted Mar 31, 1987·21 cites·15 claims
- 0865US5464992AInsulated gate bipolar transistor provided with a minority carrier extracting layerNIPPON DENSO CO·Filed 1994·Granted Nov 7, 1995·22 cites·10 claims
- 0960US5475258APower semiconductor device with protective elementNIPPON DENSO CO·Filed 1995·Granted Dec 12, 1995·24 cites·17 claims
- 1058US4985743AInsulated gate bipolar transistorNIPPON DENSO CO·Filed 1988·Granted Jan 15, 1991·17 cites·18 claims
- 1156US5801445ASemiconductor device and method of manufacturing sameDENSO CORP·Filed 1997·Granted Sep 1, 1998·21 cites·10 claims
- 1249US5973338AInsulated gate type bipolar-transistorNIPPON DENSO CO·Filed 1997·Granted Oct 26, 1999·12 cites·15 claims
- 1344US6100140AManufacturing method of semiconductor deviceNIPPON DENSO CO·Filed 1996·Granted Aug 8, 2000·9 cites·19 claims
- 1443US5925911ASemiconductor device in which defects due to LOCOS or heat treatment are suppressedNIPPON DENSO CO·Filed 1996·Granted Jul 20, 1999·10 cites·10 claims
- 1543US5448092AInsulated gate bipolar transistor with current detection functionNIPPON DENSO CO·Filed 1992·Granted Sep 5, 1995·9 cites·14 claims
- 1640US5753943AInsulated gate type field effect transistor and method of manufacturing the sameNIPPON DENSO CO·Filed 1996·Granted May 19, 1998·7 cites·15 claims
- 1739US6146947AInsulated gate type field effect transistor and method of manufacturing the sameNIPPON DENSO CO·Filed 1998·Granted Nov 14, 2000·6 cites·13 claims
- 1838US6281546B1Insulated gate field effect transistor and manufacturing method of the sameDENSO CORP·Filed 1997·Granted Aug 28, 2001·6 cites·26 claims
- 1932US5719412AInsulated gate bipolar transistorNIPPON DENSO CO·Filed 1995·Granted Feb 17, 1998·2 cites·14 claims
- 2030US6452219B1Insulated gate bipolar transistor and method of fabricating the sameDENSO CORP·Filed 1997·Granted Sep 17, 2002·1 cites·34 claims
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