Inventor · disambiguated record
Tsutomu Okutomi
Also filed as: OKUTOMI TSUTOMU
29 granted patents·306 citations·filing 1977–2000
97Inventor score
Top patents by PatentIndex Score
29 records- 0180US6210809B1Contact materialTOSHIBA KK·Filed 1998·Granted Apr 3, 2001·42 cites·8 claims
- 0275US4830821AProcess of making a contact forming material for a vacuum valveTOSHIBA KK·Filed 1988·Granted May 16, 1989·18 cites·7 claims
- 0370US4777335AContact forming material for a vacuum valveTOSHIBA KK·Filed 1987·Granted Oct 11, 1988·15 cites·7 claims
- 0468US4917642AAir-tight ceramic containerTOSHIBA KK·Filed 1988·Granted Apr 17, 1990·30 cites·13 claims
- 0557US6346683B1Vacuum interrupter and vacuum switch thereofTOSHIBA KK·Filed 2000·Granted Feb 12, 2002·8 cites·36 claims
- 0657US5500499AContacts material for vacuum valveTOSHIBA KK·Filed 1994·Granted Mar 19, 1996·13 cites·7 claims
- 0757US5420384AContact material for a vacuum interrupterTOSHIBA KK·Filed 1994·Granted May 30, 1995·14 cites·3 claims
- 0857US4345130AElectrical contactTOKYO SHIBAURA ELECTRIC CO·Filed 1980·Granted Aug 17, 1982·18 cites·7 claims
- 0956US6080952AElectrode arrangement of vacuum circuit breaker with magnetic member for longitudinal magnetizationTOSHIBA KK·Filed 1998·Granted Jun 27, 2000·15 cites·13 claims
- 1056US5045281AContact forming material for a vacuum interrupterTOSHIBA KK·Filed 1990·Granted Sep 3, 1991·14 cites·11 claims
- 1153US5354352AContact material for vacuum circuit breakersTOSHIBA KK·Filed 1992·Granted Oct 11, 1994·11 cites·3 claims
- 1253US5109145AVacuum interrupter contacts and process for producing the sameTOSHIBA KK·Filed 1989·Granted Apr 28, 1992·10 cites·20 claims
- 1351US5149362AContact forming material for a vacuum interrupterTOSHIBA KK·Filed 1989·Granted Sep 22, 1992·9 cites·9 claims
- 1450US5056702AMethod of manufacturing a semiconductor deviceTOSHIBA KK·Filed 1989·Granted Oct 15, 1991·15 cites·7 claims
- 1548US6024896AContacts materialTOSHIBA KK·Filed 1998·Granted Feb 15, 2000·10 cites·12 claims
- 1645US5246512AContact for a vacuum interrupterTOSHIBA KK·Filed 1991·Granted Sep 21, 1993·8 cites·20 claims
- 1742US5726407AContact electrode for vacuum interrupterTOSHIBA KK·Filed 1996·Granted Mar 10, 1998·7 cites·12 claims
- 1842US4129760AVacuum circuit breakerTOKYO SHIBAURA ELECTRIC CO·Filed 1977·Granted Dec 12, 1978·4 cites·4 claims
- 1941US6107582AVacuum valveTOSHIBA KK·Filed 1998·Granted Aug 22, 2000·7 cites·12 claims
- 2041US5698008AContact material for vacuum valve and method of manufacturing the sameTOSHIBA KK·Filed 1995·Granted Dec 16, 1997·5 cites·14 claims
- 2140US5409519AContact material for vacuum valveTOSHIBA KK·Filed 1993·Granted Apr 25, 1995·5 cites·5 claims
- 2240US4489291ACircuit breaker provided with parallel resistorTOKYO SHIBAURA ELECTRIC CO·Filed 1982·Granted Dec 18, 1984·5 cites·4 claims
- 2338US5403543AProcess for manufacturing a contact material for vacuum circuit breakersTOSHIBA KK·Filed 1992·Granted Apr 4, 1995·8 cites·15 claims
- 2436US6303076B1Contact material for contacts for vacuum interrupter and method of manufacturing the contactTOSHIBA KK·Filed 1999·Granted Oct 16, 2001·4 cites·22 claims
- 2533US6027821AContact material for vacuum interrupter and method for producing the sameTOSHIBA KK·Filed 1996·Granted Feb 22, 2000·3 cites·16 claims
- 2632US5972068AContact material for vacuum valveTOSHIBA KK·Filed 1998·Granted Oct 26, 1999·3 cites·18 claims
- 2732US5294761AVacuum interrupterTOSHIBA KK·Filed 1991·Granted Mar 15, 1994·3 cites·4 claims
- 2830US5882448AContact material for vacuum valve and method of manufacturing the sameTOSHIBA KK·Filed 1997·Granted Mar 16, 1999·0 cites·20 claims
- 2928US4129761AVacuum circuit breakerTOKYO SHIBAURA ELECTRIC CO·Filed 1977·Granted Dec 12, 1978·2 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →