Inventor · disambiguated record
Kiyoshi Matsuyama
Also filed as: MATSUYAMA KIYOSHI
19 granted patents·3 pending applications·239 citations·filing 1973–2022
94Inventor score
Files withSUMITOMO CHEMICAL CO16JAPAN SCIENCE & TECH AGENCY2PRIME PLANET ENERGY & SOLUTIONS INC2MITSUBISHI ELECTRIC CORP1TOYOTA MOTOR CO LTD1
Top patents by PatentIndex Score
22 records- 0183US4517246AParticulate polyolefin molding materialSUMITOMO CHEMICAL CO·Filed 1982·Granted May 14, 1985·39 cites·10 claims
- 0280US4367322AProcess for producing propylene copolymerSUMITOMO CHEMICAL CO·Filed 1981·Granted Jan 4, 1983·45 cites·11 claims
- 0378US4455344AGranules with a narrow particle size distribution comprising filler, crystalline polyolefin powder and binderSUMITOMO CHEMICAL CO·Filed 1982·Granted Jun 19, 1984·27 cites·5 claims
- 0473US4896008AVacuum discharge deviceMITSUBISHI ELECTRIC CORP·Filed 1988·Granted Jan 23, 1990·19 cites·19 claims
- 0572US4283463AMolded products of polypropyleneSUMITOMO CHEMICAL CO·Filed 1979·Granted Aug 11, 1981·12 cites·21 claims
- 0670US11725090B2Method for producing olefinic resin porous materialPRIME PLANET ENERGY & SOLUTIONS INC·Filed 2022·Granted Aug 15, 2023·0 cites·5 claims
- 0769US12163002B2Method for producing olefinic resin porous materialPRIME PLANET ENERGY & SOLUTIONS INC·Filed 2022·Granted Dec 10, 2024·0 cites·4 claims
- 0864US4355144AProcess for producing a propylene-ethylene copolymer having improved stretchabilitySUMITOMO CHEMICAL CO·Filed 1981·Granted Oct 19, 1982·12 cites·3 claims
- 0963US4408024AMethod for the heat removal from polymerization reactorSUMITOMO CHEMICAL CO·Filed 1981·Granted Oct 4, 1983·16 cites·1 claims
- 1063US4182852AProcess for refining a homopolymer of copolymer of propyleneSUMITOMO CHEMICAL CO·Filed 1978·Granted Jan 8, 1980·11 cites·4 claims
- 1160US2023178849A1Manufacturing method of porous medium of olefin-based resin, manufacturing method of separator for battery, and manufacturing apparatusTOYOTA MOTOR CO LTD·Filed 2022·Application pending·0 cites
- 1256US4713444AFinishing method of polymer slurrySUMITOMO CHEMICAL CO·Filed 1986·Granted Dec 15, 1987·20 cites·3 claims
- 1353US4195145AProcess for the purification of highly crystalline polyolefinsSUMITOMO CHEMICAL CO·Filed 1978·Granted Mar 25, 1980·7 cites·9 claims
- 1451US4053697AProcess for producing propylene homopolymers and copolymersSUMITOMO CHEMICAL CO·Filed 1975·Granted Oct 11, 1977·12 cites·5 claims
- 1547US2007102836A1Method for producing fine particles using method of rapid expansion into poor solvent from supercritical fluidJAPAN SCIENCE & TECH AGENCY·Filed 2005·Application pending·0 cites
- 1645US2008274275A1Method For Preparing Composite Fine ParticlesJAPAN SCIENCE & TECH AGENCY·Filed 2005·Application pending·0 cites
- 1743US4414373APropylene-ethylene copolymer having improved stretchabilitySUMITOMO CHEMICAL CO·Filed 1982·Granted Nov 8, 1983·4 cites·3 claims
- 1840US4208530AProcess for the recovery of atactic polymersSUMITOMO CHEMICAL CO·Filed 1978·Granted Jun 17, 1980·3 cites·12 claims
- 1939US3931135AProcess for reusing polymerization solvent by recyclingSUMITOMO CHEMICAL CO·Filed 1973·Granted Jan 6, 1976·4 cites·2 claims
- 2037US4257533AMethod of discharging slurry by varying valve openingsSUMITOMO CHEMICAL CO·Filed 1979·Granted Mar 24, 1981·7 cites·6 claims
- 2131US4461881AProcess for the production of purified propylene homopolymers or copolymersSUMITOMO CHEMICAL CO·Filed 1981·Granted Jul 24, 1984·1 cites·2 claims
- 2229US4273905AProcess for producing propylene polymer or copolymerSUMITOMO CHEMICAL CO·Filed 1979·Granted Jun 16, 1981·0 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →