Inventor
JOHOJI HIROFUMI
JP15 patents
⚠️ This page may combine multiple inventors who share the name “JOHOJI HIROFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMITOMO CHEMICAL CO
11 patentsUS6121401ASep 19, 2000
Propylene copolymer
SUMITOMO CHEMICAL CO25 citations92
US6632541B2Oct 14, 2003
Olefin-based copolymer composition
SUMITOMO CHEMICAL CO26 citations91
US6562907B2May 13, 2003
Olefin polymer and thermoplastic resin composition
SUMITOMO CHEMICAL CO36 citations91
US5602223AFeb 11, 1997
Ethylene-α-olefin copolymer and a molded article therefor
SUMITOMO CHEMICAL CO21 citations90
US6858676B1Feb 22, 2005
Olefin derived copolymer
SUMITOMO CHEMICAL CO16 citations82
US6525138B2Feb 25, 2003
Thermoplastic resin composition
SUMITOMO CHEMICAL CO11 citations72
US6300447B1Oct 9, 2001
Ethylene-α-olefin-nonconjugated polyene random copolymer
SUMITOMO CHEMICAL CO7 citations71
US5378778AJan 3, 1995
Liquid catalyst component, catalyst system containing the same, and process for producing ethylene-α-olefin copolymers using the catalyst system
SUMITOMO CHEMICAL CO6 citations63
US6458901B1Oct 1, 2002
Propylenic copolymer and thermoplastic resin composition
SUMITOMO CHEMICAL CO5 citations62
US5258476ANov 2, 1993
Process for producing ethylene-α-olefin copolymers
SUMITOMO CHEMICAL CO5 citations62
US5508364AApr 16, 1996
Process for polymerizing ethylene at high temperature under high pressure
SUMITOMO CHEMICAL CO3 citations61