Inventor · disambiguated record
Masahiko Okamoto
Also filed as: OKAMOTO MASAHIKO
22 granted patents·11 pending applications·337 citations·filing 1995–2023
95Inventor score
Top patents by PatentIndex Score
33 records- 0196US6613433B2Polarizing optical composite and polarizing lensYAMAMOTO KOGAKU·Filed 2001·Granted Sep 2, 2003·109 cites·24 claims
- 0289US9023906B2Propylene-based copolymer, propylene-based copolymer composition, molded product thereof and foamed product thereof, and production process thereforOKAMOTO MASAHIKO·Filed 2012·Granted May 5, 2015·12 cites·22 claims
- 0387US8129489B2Ethylene polymer and use thereofOKAMOTO MASAHIKO·Filed 2005·Granted Mar 6, 2012·15 cites·5 claims
- 0486US5702813AComposite molded article including a polarizer of polycarbonateYAMAMOTO KOGAKU·Filed 1995·Granted Dec 30, 1997·88 cites·6 claims
- 0585US9725540B24-methyl-1-pentene/α-olefin copolymer, composition comprising the copolymer and 4-methyl-1-pentene copolymer compositionUEKUSA TAKAYUKI·Filed 2010·Granted Aug 8, 2017·8 cites·2 claims
- 0684US7847040B2α-olefin-based polymer composition, molded product formed from the composition, and novel polymerMITSUI CHEMICALS INC·Filed 2005·Granted Dec 7, 2010·7 cites·7 claims
- 0782US6455163B1Transparent optical articleYAMAMOTO KOGAKU·Filed 2001·Granted Sep 24, 2002·25 cites·14 claims
- 0881US10662270B24-methyl-1-pentene/α-olefin copolymer, composition comprising the copolymer and 4-methyl-1-pentene copolymer compositionMITSUI CHEMICALS INC·Filed 2017·Granted May 26, 2020·1 cites·3 claims
- 0979US12240930B2Cyclic olefin-based copolymer, cyclic olefin-based copolymer composition, molded article, and medical containerMITSUI CHEMICALS INC·Filed 2023·Granted Mar 4, 2025·0 cites·7 claims
- 1078US8329825B2Material for vibration control, article for vibration control and multilayer laminate for vibration controlMORI RYOJI·Filed 2006·Granted Dec 11, 2012·4 cites·13 claims
- 1177US9382356B2Catalyst for olefin polymerization, method for producing olefin polymer, method for producing propylene-based copolymer, propylene polymer, propylene-based polymer composition, and use of thoseTOHI YASUSHI·Filed 2007·Granted Jul 5, 2016·5 cites·13 claims
- 1277US2022073659A14-METHYL-1-PENTENE/alpha-OLEFIN COPOLYMER, COMPOSITION COMPRISING THE COPOLYMER AND 4-METHYL-1-PENTENE COPOLYMER COMPOSITIONMITSUI CHEMICALS INC·Filed 2021·Application pending·0 cites
- 1376US9902847B24-methyl-1-pentene (co)polymer composition, and film and hollow molded product composed of the compositionMITSUI CHEMICALS INC·Filed 2012·Granted Feb 27, 2018·3 cites·16 claims
- 1476US8802779B2Propylene-based polymer composition, use thereof, and method for producing thermoplastic polymer compositionOKAMOTO MASAHIKO·Filed 2006·Granted Aug 12, 2014·4 cites·10 claims
- 1573US7700708B2Ethylene polymer and application thereof to moldingsMITSUI CHEMICALS INC·Filed 2004·Granted Apr 20, 2010·12 cites·14 claims
- 1672US6165392AMethod and apparatus for manufacturing lenses and a lens manufactured therebyYAMAMOTO KOGAKU KABUSHIKI KAIS·Filed 1999·Granted Dec 26, 2000·36 cites·13 claims
- 1771US12091536B2Resin composition containing 4-methyl-1-pentene copolymer, and film for capacitorsMITSUI CHEMICALS INC·Filed 2019·Granted Sep 17, 2024·1 cites·17 claims
- 1870US2020247925A14-METHYL-1-PENTENE/alpha-OLEFIN COPOLYMER, COMPOSITION COMPRISING THE COPOLYMER AND 4-METHYL-1-PENTENE COPOLYMER COMPOSITIONMITSUI CHEMICALS INC·Filed 2020·Application pending·0 cites
- 1968US8008401B2Polyolefin compositionMITSUI CHEMICALS INC·Filed 2007·Granted Aug 30, 2011·2 cites·16 claims
- 2065US11732075B2Cyclic olefin-based copolymer, cyclic olefin-based copolymer composition, molded article, and medical containerMITSUI CHEMICALS INC·Filed 2018·Granted Aug 22, 2023·0 cites·22 claims
- 2159US2016280819A1Catalyst for olefin polymerization, method for producing olefin polymer, method for producing propylene-based copolymer, propylene polymer, propylene-based polymer composition, and use of thoseMITSUI CHEMICALS INC·Filed 2016·Application pending·0 cites
- 2256US7879960B2Process for producing propylene polymerMITSUI CHEMICALS INC·Filed 2005·Granted Feb 1, 2011·5 cites·2 claims
- 2356US2007184225A1Polypropylene based monolayer film and use thereofMITSUI CHEMICALS INC·Filed 2006·Application pending·0 cites
- 2453US12168738B2Adhesive resin compositions and laminatesMITSUI CHEMICALS INC·Filed 2020·Granted Dec 17, 2024·0 cites·21 claims
- 2553US2010227098A1Ethylenic Resin and Blow Molded Article Obtained TherefromMITSUI CHEMICALS INC·Filed 2007·Application pending·0 cites
- 2651US11248069B24-methyl-1-pentene polymer, resin composition and molded articleMITSUI CHEMICALS INC·Filed 2017·Granted Feb 15, 2022·0 cites·16 claims
- 2749US2022033598A1Cyclic olefin-based resin composition, molded product and optical componentMITSUI CHEMICALS INC·Filed 2019·Application pending·0 cites
- 2848US2009036584A1Environmental Stress Cracking Resistance Improver, and Resin Composition With Improved Environmental Stress Cracking Resistance Properties Containing the SamePRIME POLYMER CO LTD·Filed 2007·Application pending·0 cites
- 2947US2020071443A1Graft copolymer-containing solid product and use thereofMITSUI CHEMICALS INC·Filed 2017·Application pending·0 cites
- 3046US2010048820A1Process for producing syndiotactic propylene polymerMITSUI CHEMICALS INC·Filed 2007·Application pending·0 cites
- 3142US2009018299A1Ethylenic Polymer and Molded Article Obtained TherefromPRIME POLYMER CO LTD·Filed 2007·Application pending·0 cites
- 3240US10870738B2Polyester sheetMITSUI CHEMICALS INC·Filed 2017·Granted Dec 22, 2020·0 cites·10 claims
- 3334US2008044309A1Liquid ChromatographSUMITOMO CHEMICAL CO·Filed 2005·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →