Inventor · disambiguated record
Hisao Fujikawa
Also filed as: FUJIKAWA HISAO · KOWAKA MASAMICHI
10 granted patents·1 pending application·169 citations·filing 1974–2015
90Inventor score
Top patents by PatentIndex Score
11 records- 0188US4530720AHigh temperature oxidation resistant austenitic steelSUMITOMO METAL IND·Filed 1983·Granted Jul 23, 1985·44 cites·24 claims
- 0285US4742324ASheath heaterSUMITOMO METAL IND·Filed 1987·Granted May 3, 1988·35 cites·8 claims
- 0377US4484956AProcess for producing heat-resistant ferritic stainless steel sheetSUMITOMO METAL IND·Filed 1984·Granted Nov 27, 1984·18 cites·10 claims
- 0475US4035182ANi-Cr-Fe alloy having an improved resistance to stress corrosion crackingSUMITOMO METAL IND·Filed 1974·Granted Jul 12, 1977·18 cites·4 claims
- 0570US5160389AFlexible tube for automotive exhaust systemsNIPPON STAINLESS STEEL CO·Filed 1991·Granted Nov 3, 1992·21 cites·12 claims
- 0662US4140526AFerritic stainless steel having improved weldability and oxidation resistanceSUMITOMO METAL IND·Filed 1977·Granted Feb 20, 1979·14 cites·8 claims
- 0749US4201574ALow carbon Ni-Cr austenitic steel having an improved resistance to stress corrosion crackingSUMITOMO METAL IND·Filed 1978·Granted May 6, 1980·9 cites·8 claims
- 0846US4950873ASheath heaterSUMITOMO METAL IND·Filed 1989·Granted Aug 21, 1990·8 cites·16 claims
- 0942US10156008B2Method for altering surface of metal, and metallic productAIR WATER NV INC·Filed 2015·Granted Dec 18, 2018·0 cites·8 claims
- 1033US2014102592A1Steel product and its manufacturing methodNISHIKAWA KOJI·Filed 2012·Application pending·0 cites
- 1129US5385995AProcess for the preparation of an alkyl vinyl ether/maleic anhydride copolymerDAICEL CHEM·Filed 1992·Granted Jan 31, 1995·2 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →