Inventor · disambiguated record
Iwao Ohshima
Also filed as: OHSHIMA IWAO
26 granted patents·346 citations·filing 1974–2001
96Inventor score
Files withNITTO CHEMICAL INDUSTRY CO LTD13TOKYO SHIBAURA ELECTRIC CO6TOSHIBA KK6TOKYO ELECTRIC POWER CO1
Top patents by PatentIndex Score
26 records- 0184US4683128AProcess for manufacturing high purity silicaNITTO CHEMICAL INDUSTRY CO LTD·Filed 1986·Granted Jul 28, 1987·36 cites·27 claims
- 0282US4853198AProcess for producing unsintered cristobalite silicaNITTO CHEMICAL INDUSTRY CO LTD·Filed 1988·Granted Aug 1, 1989·32 cites·9 claims
- 0380US6210809B1Contact materialTOSHIBA KK·Filed 1998·Granted Apr 3, 2001·42 cites·8 claims
- 0477US4134871AMethod for reducing the adhesiveness of hydrogel-like polymer by adding polyethylene glycolNITTO CHEMICAL INDUSTRY CO LTD·Filed 1977·Granted Jan 16, 1979·20 cites·13 claims
- 0576US4259666AApparatus for detecting degradation of characteristics of arrestersTOKYO SHIBAURA ELECTRIC CO·Filed 1979·Granted Mar 31, 1981·20 cites·4 claims
- 0667US5154905AMethod for producing unsintered cristobalite particlesNITTO CHEMICAL INDUSTRY CO LTD·Filed 1991·Granted Oct 13, 1992·20 cites·16 claims
- 0766US3951934APolymerization of acrylamide in the presence of water-soluble nitrogen compoundsNITTO CHEMICAL INDUSTRY CO LTD·Filed 1974·Granted Apr 20, 1976·12 cites·7 claims
- 0863US5410574AInternal component of fusion reactorTOSHIBA KK·Filed 1993·Granted Apr 25, 1995·26 cites·36 claims
- 0960US4362890AProcess for the preparation of unsaturated quaternary ammonium saltsNITTO CHEMICAL INDUSTRY CO LTD·Filed 1980·Granted Dec 7, 1982·6 cites·11 claims
- 1059US3947518AProcess for purifying acrylamidesNITTO CHEMICAL INDUSTRY CO LTD·Filed 1974·Granted Mar 30, 1976·5 cites·15 claims
- 1157US6346683B1Vacuum interrupter and vacuum switch thereofTOSHIBA KK·Filed 2000·Granted Feb 12, 2002·8 cites·36 claims
- 1256US6080952AElectrode arrangement of vacuum circuit breaker with magnetic member for longitudinal magnetizationTOSHIBA KK·Filed 1998·Granted Jun 27, 2000·15 cites·13 claims
- 1355US5202104AProcess for preparing silica having a low silanol contentNITTO CHEMICAL INDUSTRY CO LTD·Filed 1990·Granted Apr 13, 1993·18 cites·15 claims
- 1452US4142230ASealed DC power converting stationTOKYO SHIBAURA ELECTRIC CO·Filed 1977·Granted Feb 27, 1979·16 cites·7 claims
- 1549US3996411AProduction of water-soluble polymersNITTO CHEMICAL INDUSTRY CO LTD·Filed 1974·Granted Dec 7, 1976·5 cites·7 claims
- 1645US6476338B2Vacuum switchTOSHIBA KK·Filed 2001·Granted Nov 5, 2002·6 cites·6 claims
- 1745US4247437AMethod for cooling polymeric hydrogel blocksNITTO CHEMICAL INDUSTRY CO LTD·Filed 1979·Granted Jan 27, 1981·8 cites·17 claims
- 1843US4232352AProtective gap devices for protecting circuit breakersTOKYO SHIBAURA ELECTRIC CO·Filed 1978·Granted Nov 4, 1980·6 cites·3 claims
- 1942US4607958AApparatus for stirring hydrogel particles of water-soluble polymerNITTO CHEMICAL INDUSTRY CO LTD·Filed 1984·Granted Aug 26, 1986·10 cites·12 claims
- 2040US4165419AMetal surfaces coated with aliphatic acids containing 12 carbon atoms or more to eliminate polymer build-up on reactor walls during the polymerization of water-soluble cationic polymersNITTO CHEMICAL INDUSTRY CO LTD·Filed 1978·Granted Aug 21, 1979·4 cites·12 claims
- 2139US5610958AReactor circulating pump systemTOSHIBA KK·Filed 1995·Granted Mar 11, 1997·16 cites·10 claims
- 2238US3944886AProtection apparatus for a capacitor connected in series with an electric power circuitTOKYO ELECTRIC POWER CO·Filed 1975·Granted Mar 16, 1976·5 cites·8 claims
- 2330US4587543AMethod and device for detecting metal ionsTOKYO SHIBAURA ELECTRIC CO·Filed 1982·Granted May 6, 1986·4 cites·8 claims
- 2429US4274280APlugging indicatorTOKYO SHIBAURA ELECTRIC CO·Filed 1979·Granted Jun 23, 1981·3 cites·2 claims
- 2529US4164818AMethod for preventing adhesiveness of a hydrogel of a water-soluble acrylamide-type polymerNITTO CHEMICAL INDUSTRY CO LTD·Filed 1977·Granted Aug 21, 1979·1 cites·7 claims
- 2626US4297873APlugging deviceTOKYO SHIBAURA ELECTRIC CO·Filed 1979·Granted Nov 3, 1981·2 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →