Inventor · disambiguated record
Masahiko Kuramoto
Also filed as: KURAMOTO MASAHIKO
43 granted patents·2 pending applications·915 citations·filing 1986–2012
98Inventor score
Top patents by PatentIndex Score
45 records- 0199US4814540AProcess for producing propylene oligomersIDEMITSU KOSAN CO·Filed 1987·Granted Mar 21, 1989·120 cites·16 claims
- 0296US4680353AProcess for production of styrene polymersIDEMITSU KOSAN CO·Filed 1986·Granted Jul 14, 1987·143 cites·3 claims
- 0392US6555633B1Catalysts for α-olefin production and processes for producing α-olefinIDEMITSU PETROCHEMICAL CO·Filed 2000·Granted Apr 29, 2003·44 cites·15 claims
- 0491US6841693B1Transition metal compound, olefin polymerization catalyst, and method of polymerizing olefinIDEMITSU PETROCHEMICAL CO·Filed 2000·Granted Jan 11, 2005·31 cites·14 claims
- 0590US5166238AStyrene-based resin compositionIDEMITSU KOSAN CO·Filed 1990·Granted Nov 24, 1992·65 cites·34 claims
- 0687US5260394AStyrene copolymer and process for production thereofIDEMITSU KOSAN CO·Filed 1990·Granted Nov 9, 1993·50 cites·23 claims
- 0784US7176266B2Catalyst for vinyl compound polymerization and process for producing vinyl polymerIDEMITSU KOSAN CO·Filed 2004·Granted Feb 13, 2007·11 cites·21 claims
- 0884US4978730AProcess for producing styrene-based polymers and catalyst for use thereinIDEMITSU KOSAN CO·Filed 1988·Granted Dec 18, 1990·29 cites·7 claims
- 0980US6787499B2Catalyst for the production of α-olefin and α-olefin production methodIDEMITSU PETROCHEMICAL CO·Filed 2003·Granted Sep 7, 2004·16 cites·12 claims
- 1079US5340892AProcess for producing styrene polymersIDEMITSU KOSAN CO·Filed 1993·Granted Aug 23, 1994·45 cites·10 claims
- 1172US5093295AProcess for producing homogeneous aluminoxane solutionIDEMITSU KOSAN CO·Filed 1990·Granted Mar 3, 1992·14 cites·12 claims
- 1271US6013726AComposition of styrene resin, thermoplastic resin and rubberIDEMITSU KOSAN CO·Filed 1995·Granted Jan 11, 2000·28 cites·15 claims
- 1370US9394213B2Method for producing α-olefinIDEMITSU KOSAN CO·Filed 2012·Granted Jul 19, 2016·1 cites·14 claims
- 1469US5252693ASyndiotactic styrene polymersIDEMITSU KOSAN CO·Filed 1991·Granted Oct 12, 1993·16 cites·5 claims
- 1568US5272229AProcess for producing a styrene polymer having high degree of syndiotactic configurationIDEMITSU KOSAN CO·Filed 1991·Granted Dec 21, 1993·16 cites·2 claims
- 1667US5990217AStyrene based resin compositionIDEMITSU KOSAN CO·Filed 1998·Granted Nov 23, 1999·19 cites·14 claims
- 1765US5247020AProcess for producing a styrene polymer compositionIDEMITSU KOSAN CO·Filed 1990·Granted Sep 21, 1993·16 cites·11 claims
- 1865US4997898AVinylcyclohexane-based polymers and process for production thereofIDEMITSU KOSAN CO·Filed 1988·Granted Mar 5, 1991·14 cites·10 claims
- 1961US5670587ACatalyst for producing aromatic vinyl compound-based polymer composition and process for producing aromatic vinyl compound-based polymer composition using sameIDEMITSU KOSAN CO·Filed 1994·Granted Sep 23, 1997·14 cites·11 claims
- 2061US5502133ASyndiotactic styrene polymersIDEMITSU KOSAN CO·Filed 1993·Granted Mar 26, 1996·11 cites·60 claims
- 2161US5212232AProcess for production of styrene-based polymersIDEMITSU KOSAN CO·Filed 1991·Granted May 18, 1993·13 cites·8 claims
- 2260US6087435AComposition of styrene resin, thermoplastic resin and rubber particlesIDEMITSU KOSAN CO·Filed 1995·Granted Jul 11, 2000·18 cites·40 claims
- 2359US6046275AStyrene resin with rubber polymer particlesIDEMITSU KOSAN CO·Filed 1995·Granted Apr 4, 2000·17 cites·12 claims
- 2459US2008188687A1Magnesium compound, solid catalyst component for olefin polymerization, catalyst for olefin polymerization and method for producing polyolefinIDEMITSU KOSAN CO·Filed 2008·Application pending·0 cites
- 2557US5023222ACatalyst for producing syndiotactic configuration styrene-based polymersIDEMITSU KOSAN CO·Filed 1990·Granted Jun 11, 1991·9 cites·8 claims
- 2656US5891951AStyrene-based resin compositionIDEMITSU KOSAN CO·Filed 1995·Granted Apr 6, 1999·13 cites·23 claims
- 2755US5321122AProcess for purification of styrene polymerIDEMITSU KOSAN CO·Filed 1992·Granted Jun 14, 1994·14 cites·15 claims
- 2854US6008293ASyndiotactic polystyrene and polycarbonate resin compositionsIDEMITSU KOSAN CO·Filed 1995·Granted Dec 28, 1999·14 cites·8 claims
- 2954US5430001AProcess for producing a styrene polymer and a catalyst for use thereinIDEMITSU KOSAN CO·Filed 1993·Granted Jul 4, 1995·8 cites·2 claims
- 3053US6051655AStyrene-based resin composition with thermoplastic resinIDEMITSU KOSAN CO·Filed 1995·Granted Apr 18, 2000·10 cites·10 claims
- 3152US5189125AProcess for producing syndiotactic styrene copolymerIDEMITSU KOSAN CO·Filed 1991·Granted Feb 23, 1993·9 cites·14 claims
- 3252US4990580AProcess for production of styrene polymersIDEMITSU KOSAN CO·Filed 1989·Granted Feb 5, 1991·14 cites·10 claims
- 3351US6395846B1Catalysts for olefin polymer productionIDEMITSU PETROCHEMICAL CO·Filed 1999·Granted May 28, 2002·9 cites·29 claims
- 3451US6093768ASyndiotactic styrene resin, thermoplastic resin and rubberIDEMITSU KOSAN CO·Filed 1995·Granted Jul 25, 2000·13 cites·22 claims
- 3547US5023304AProcess for producing styrene-based polymerIDEMITSU KOSAN CO·Filed 1990·Granted Jun 11, 1991·11 cites·19 claims
- 3646US5391671AStyrene copolymer and process for production thereofIDEMITSU KOSAN CO·Filed 1993·Granted Feb 21, 1995·9 cites·6 claims
- 3741US6630551B1Catalyst for olefin polymerization and process for producing olefin polymer with the catalystIDEMITSU PETROCHEMICAL CO·Filed 1999·Granted Oct 7, 2003·5 cites·15 claims
- 3841US5426176AProcess for purification of styrenic polymerIDEMITSU KOSAN CO·Filed 1994·Granted Jun 20, 1995·4 cites·24 claims
- 3940US5262504AStyrene copolymer and process for production thereofIDEMITSU KOSAN CO·Filed 1990·Granted Nov 16, 1993·6 cites·4 claims
- 4039US2005187359A1Solid catalyst component for olefin polymerization, catalyst for olefin polymerization and method for producing olefin polymerIDEMITSU KOSAN CO·Filed 2003·Application pending·0 cites
- 4138US6043307AStyrene-based resin compositionIDEMITSU KOSAN CO·Filed 1995·Granted Mar 28, 2000·4 cites·20 claims
- 4237US6835788B2Catalyst for vinyl compound polymerization and process for producing vinyl polymerIDEMITSU PETROCHEMICAL CO·Filed 2001·Granted Dec 28, 2004·2 cites·34 claims
- 4337US5420240AProcess for purification of syndiotactic styrene polymerIDEMITSU KOSAN CO·Filed 1994·Granted May 30, 1995·4 cites·15 claims
- 4437US5071953AMethod for the preparation of amorphous syndiotactic styrene-based polymer and a method for shaping the sameIDEMITSU KOSAN CO·Filed 1987·Granted Dec 10, 1991·4 cites·28 claims
- 4533USRE35289EProcess for production of styrene polymersIDEMITSU KOSAN CO·Filed 1993·Granted Jul 2, 1996·2 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →