Inventor · disambiguated record
Masahiro Niwano
Also filed as: NIWANO MASAHIRO
16 granted patents·353 citations·filing 1978–1995
94Inventor score
Files withSUMITOMO CHEMICAL CO16
Top patents by PatentIndex Score
16 records- 0195US4367323AProduction of hydrogelsSUMITOMO CHEMICAL CO·Filed 1981·Granted Jan 4, 1983·194 cites·4 claims
- 0283US5135791AOptical deviceSUMITOMO CHEMICAL CO·Filed 1990·Granted Aug 4, 1992·35 cites·3 claims
- 0382US4845142AMagneto optical disk substrate comprising an aromatic vinyl monomer and a polyphenylene etherSUMITOMO CHEMICAL CO·Filed 1988·Granted Jul 4, 1989·28 cites·1 claims
- 0479US5446124AAromatic oligomer and process for preparing the sameSUMITOMO CHEMICAL CO·Filed 1990·Granted Aug 29, 1995·20 cites·9 claims
- 0559US5563216AThermoplastic resin composition and preparation thereofSUMITOMO CHEMICAL CO·Filed 1992·Granted Oct 8, 1996·19 cites·6 claims
- 0654US4650608AStar block copolymer from lactam and polyol and process for the production thereofSUMITOMO CHEMICAL CO·Filed 1985·Granted Mar 17, 1987·9 cites·4 claims
- 0753US4775721AProcess for producing polyamide block copolymerSUMITOMO CHEMICAL CO·Filed 1987·Granted Oct 4, 1988·10 cites·5 claims
- 0852US5376730AThermoplastic graft copolymer and process for preparing the sameSUMITOMO CHEMICAL CO·Filed 1990·Granted Dec 27, 1994·9 cites·31 claims
- 0948US5292810AThermoplastic elastomer compositionSUMITOMO CHEMICAL CO·Filed 1991·Granted Mar 8, 1994·9 cites·11 claims
- 1042US4167525AProcess for preparation of aromatic acyl chlorideSUMITOMO CHEMICAL CO·Filed 1978·Granted Sep 11, 1979·2 cites·8 claims
- 1138US5001207APolyether-polyamide block copolymer and polyether prepolymerSUMITOMO CHEMICAL CO·Filed 1990·Granted Mar 19, 1991·4 cites·7 claims
- 1237US4918152AProcess for the production of formed article of aromatic vinyl resinSUMITOMO CHEMICAL CO·Filed 1988·Granted Apr 17, 1990·7 cites·21 claims
- 1334US5659007AProcess for producing aromatic polyamide filmSUMITOMO CHEMICAL CO·Filed 1995·Granted Aug 19, 1997·4 cites·26 claims
- 1431US4792603AMethod of producing a polyether prepolymerSUMITOMO CHEMICAL CO·Filed 1986·Granted Dec 20, 1988·2 cites·3 claims
- 1528US5587450AProcess for producing aromatic polyamide filmSUMITOMO CHEMICAL CO·Filed 1995·Granted Dec 24, 1996·0 cites·18 claims
- 1628US4751282AStar block polyol lactam copolymer and process for the production thereofSUMITOMO CHEMICAL CO·Filed 1986·Granted Jun 14, 1988·1 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →