Inventor
YANAGIHARA HISAYOSHI
JP12 patents
⚠️ This page may combine multiple inventors who share the name “YANAGIHARA HISAYOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SHOWA DENKO KK
8 patentsUS6184328B1Feb 6, 2001
Propylene-based polymer, method for its production, composition thereof, catalyst component for polymerization, and method for its production
SHOWA DENKO KK30 citations91
US5208302AMay 4, 1993
Catalyst, process for preparation of same and process for polymerization of olefins using same
SHOWA DENKO KK29 citations91
US5804665ASep 8, 1998
Propylene block copolymer and process for producing the same
SHOWA DENKO KK12 citations73
US5684099ANov 4, 1997
Propylene block copolymer, process for producing the same, and resin composition comprising the same
SHOWA DENKO KK17 citations73
US6323298B1Nov 27, 2001
Propylene-based polymer, method for its production, composition thereof, catalyst component for polymerization, and method for its production
SHOWA DENKO KK13 citations72
US5916990AJun 29, 1999
Propylene-based polymer, method of its production, composition thereof, catalyst component for polymerization, and method for its production
SHOWA DENKO KK14 citations72
US5703172ADec 30, 1997
Propylene block copolymer and process for producing the same
SHOWA DENKO KK14 citations69
US5049533ASep 17, 1991
Catalyst, process for preparation of same, and process for polymerization of olefins using same
SHOWA DENKO KK4 citations61