Inventor · disambiguated record
Hiroyoshi Takao
Also filed as: TAKAO HIROYOSHI
18 granted patents·192 citations·filing 1975–1992
94Inventor score
Files withSUMITOMO CHEMICAL CO18
Top patents by PatentIndex Score
18 records- 0183US4957976AProcess for preparing diene polymer rubbersSUMITOMO CHEMICAL CO·Filed 1989·Granted Sep 18, 1990·30 cites·6 claims
- 0275US5015692AProcess for preparing modified diene polymer rubbersSUMITOMO CHEMICAL CO·Filed 1990·Granted May 14, 1991·22 cites·6 claims
- 0371US4820774AElastomer compositionSUMITOMO CHEMICAL CO·Filed 1987·Granted Apr 11, 1989·21 cites·22 claims
- 0470US4537936ADiene rubber composition, method of preparing the same and tire employing said compositionSUMITOMO CHEMICAL CO·Filed 1982·Granted Aug 27, 1985·19 cites·5 claims
- 0563US5118773ARubber compositionSUMITOMO CHEMICAL CO·Filed 1991·Granted Jun 2, 1992·18 cites·8 claims
- 0660US4436873AConjugated diene block polymer and process for preparing the sameSUMITOMO CHEMICAL CO·Filed 1983·Granted Mar 13, 1984·11 cites·4 claims
- 0755US5179156ARubber compositionSUMITOMO CHEMICAL CO·Filed 1992·Granted Jan 12, 1993·10 cites·11 claims
- 0855US4885338AModified diene polymer rubbersSUMITOMO CHEMICAL CO·Filed 1988·Granted Dec 5, 1989·9 cites·13 claims
- 0955US4407989AProcess for the separation treatment of polymer from polymer solutionSUMITOMO CHEMICAL CO·Filed 1982·Granted Oct 4, 1983·9 cites·10 claims
- 1051US4889881AEthylene-α-olefin vulcanized rubber compositionSUMITOMO CHEMICAL CO·Filed 1988·Granted Dec 26, 1989·9 cites·12 claims
- 1144US5037891AModified ethylene-α-olefin copolymer rubber and a process for producing the sameSUMITOMO CHEMICAL CO·Filed 1989·Granted Aug 6, 1991·5 cites·16 claims
- 1244US4918142ARubber composition of tire tread containing block copolymer coupled with dicarboxylic acid esterSUMITOMO CHEMICAL CO·Filed 1989·Granted Apr 17, 1990·8 cites·5 claims
- 1343US4987199AEthylene-acrylic acid ester copolymer and process for producing the sameSUMITOMO CHEMICAL CO·Filed 1988·Granted Jan 22, 1991·5 cites·16 claims
- 1443US4647614ADiene elastomer compositionsSUMITOMO CHEMICAL CO·Filed 1985·Granted Mar 3, 1987·7 cites·5 claims
- 1535US4121032AProcess for preparing alternating copolymer of conjugated vinyl compound and olefinic unsaturated compound with oxygen and boron compoundSUMITOMO CHEMICAL CO·Filed 1975·Granted Oct 17, 1978·4 cites·4 claims
- 1633US4942223AProcess for separating a polymer from a solution containing the sameSUMITOMO CHEMICAL CO·Filed 1983·Granted Jul 17, 1990·3 cites·16 claims
- 1731US4812527ARubber composition for tire treads containing dicarboxylic acid diester coupled block polymersSUMITOMO CHEMICAL CO·Filed 1987·Granted Mar 14, 1989·1 cites·5 claims
- 1824US3989882AProcess for preparing an alternating copolymer of a conjugated vinyl compound and an olefinic unsaturated compoundSUMITOMO CHEMICAL CO·Filed 1975·Granted Nov 2, 1976·1 cites·15 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →