Inventor · disambiguated record
Hirofumi Johoji
Also filed as: JOHOJI HIROFUMI
15 granted patents·188 citations·filing 1992–2011
93Inventor score
Files withSUMITOMO CHEMICAL CO11OSAKADA KOHTARO2SUMITOMO CHEMICAL COMPANY LIMT1SUMITOMO CHEMICAL LTD CO1
Top patents by PatentIndex Score
15 records- 0186US6562907B2Olefin polymer and thermoplastic resin compositionSUMITOMO CHEMICAL CO·Filed 2001·Granted May 13, 2003·36 cites·6 claims
- 0271US6525138B2Thermoplastic resin compositionSUMITOMO CHEMICAL CO·Filed 2001·Granted Feb 25, 2003·11 cites·7 claims
- 0370US6121401APropylene copolymerSUMITOMO CHEMICAL CO·Filed 1998·Granted Sep 19, 2000·25 cites·13 claims
- 0466US6632541B2Olefin-based copolymer compositionSUMITOMO CHEMICAL CO·Filed 1999·Granted Oct 14, 2003·26 cites·47 claims
- 0561US5602223AEthylene-α-olefin copolymer and a molded article thereforSUMITOMO CHEMICAL CO·Filed 1996·Granted Feb 11, 1997·21 cites·21 claims
- 0660US6084046ACopolymer and copolymer compositionSUMITOMO CHEMICAL COMPANY LIMT·Filed 1998·Granted Jul 4, 2000·18 cites·25 claims
- 0747US6858676B1Olefin derived copolymerSUMITOMO CHEMICAL CO·Filed 1999·Granted Feb 22, 2005·16 cites·18 claims
- 0845US8431663B2Polymer and method for producing sameOSAKADA KOHTARO·Filed 2011·Granted Apr 30, 2013·0 cites·12 claims
- 0945US5378778ALiquid catalyst component, catalyst system containing the same, and process for producing ethylene-α-olefin copolymers using the catalyst systemSUMITOMO CHEMICAL CO·Filed 1994·Granted Jan 3, 1995·6 cites·7 claims
- 1044US6300447B1Ethylene-α-olefin-nonconjugated polyene random copolymerSUMITOMO CHEMICAL CO·Filed 1999·Granted Oct 9, 2001·7 cites·12 claims
- 1144US5258476AProcess for producing ethylene-α-olefin copolymersSUMITOMO CHEMICAL CO·Filed 1992·Granted Nov 2, 1993·5 cites·12 claims
- 1242US8389656B2Copolymer and method for producing sameOSAKADA KOHTARO·Filed 2011·Granted Mar 5, 2013·0 cites·12 claims
- 1338US6331593B1Resin composition pelletSUMITOMO CHEMICAL LTD CO·Filed 1999·Granted Dec 18, 2001·9 cites·27 claims
- 1437US6458901B1Propylenic copolymer and thermoplastic resin compositionSUMITOMO CHEMICAL CO·Filed 1998·Granted Oct 1, 2002·5 cites·22 claims
- 1535US5508364AProcess for polymerizing ethylene at high temperature under high pressureSUMITOMO CHEMICAL CO·Filed 1995·Granted Apr 16, 1996·3 cites·12 claims
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