IH

Iwakazu Hattori

JR Japan Synthetic Rubber: 12 patents #10 of 558Top 2%
JS Jsr: 12 patents #65 of 1,137Top 6%
Bridgestone: 10 patents #218 of 2,860Top 8%
Overall (All Time): #113,581 of 4,157,543Top 3%
32
Patents All Time

Issued Patents All Time

Showing 1–25 of 32 patents

Patent #TitleCo-InventorsDate
10428161 Method for producing modified solution-polymerized diene rubber to be blended with silica, and rubber composition containing same Hisao Ono 2019-10-01
9644052 Functionalized high cis-1,4-polybutadiene prepared using novel functionalizing agents Yoichi Ozawa, H. Jerrold Miller, Koji Masaki, Koichi Morita, Tatsuo Fujimaki +2 more 2017-05-09
8987362 Functionalized high cis-1,4-polybutadiene prepared using novel functionalizing agents Yoichi Ozawa, H. Jerrold Miller, Koji Masaki, Koichi Morita, Tatsuo Fujimaki +2 more 2015-03-24
8618199 Functionalized high cis-1,4-polybutadiene prepared using novel functionalizing agents Yoichi Ozawa, H. Jerrold Miller, Koji Masaki, Koichi Morita, Tatsuo Fujimaki +2 more 2013-12-31
8362126 Functionalized high cis-1,4-polybutadiene prepared using novel functionalizing agents Yoichi Ozawa, H. Jerrold Miller, Koji Masaki, Koichi Morita, Tatsuo Fujimaki +2 more 2013-01-29
7750087 Modified polymers prepared with lanthanide-based catalysts Yoichi Ozawa, H. Jerrold Miller, Koji Masaki, Tatsuo Fujimaki, Takuo Sone +1 more 2010-07-06
7642322 Functionalized high cis-1,4-polybutadiene prepared using novel functionalizing agents Yoichi Ozawa, H. Jerrold Miller, Koji Masaki, Koichi Morita, Tatsuo Fujimaki +2 more 2010-01-05
7294680 Method of producing conjugated diene polymers with narrow molecular weight distribution and polymer produced Takuo Sone, Katsutoshi Nonaka, Akio Takashima 2007-11-13
6992147 Modified polymers prepared with lanthanide-based catalysts Yoichi Ozawa, H. Jerrold Miller, Koji Masaki, Tatsuo Fujimaki, Takuo Sone +1 more 2006-01-31
6887929 Resin composition and golf ball Motokazu Takeuchi, Masashi Shimakage, Takashi Toyoizumi 2005-05-03
6838538 Hydrogenated modified polymer, process for producing the same and composition containing the same Takashi Toyoizumi, Motokazu Takeuchi, Masashi Shimakage, Nobuyuki Toyoda, Kazuhisa Kodama 2005-01-04
6838526 Modified conjugated diene polymer and method of producing the same and rubber composition Takuo Sone, Ryouji Tanaka, Kouichirou Tani, Hiroshi Akema, Atsushi Nakayama 2005-01-04
6747085 Conjugated diene polymer and rubber composition Takuo Sone, Daisuke Yamazaki, Katsutoshi Nonaka 2004-06-08
6548598 Thermoplastic resin composition Motokazu Takeuchi, Masashi Shimakage 2003-04-15
6391990 Method of producing conjugated diene polymer Yoshiki Ishino, Satoshi Nakayama, Yoshihiro Mori 2002-05-21
6291596 Catalyst and process for hydrogenating olefinically unsaturated compound Hiroyuki Sasanuma, Motokazu Takeuchi 2001-09-18
6255416 Method of producing conjugated diene polymers Takuo Sone, Katsutoshi Nonaka, Akio Takashima 2001-07-03
6194505 Rubber composition for solid golf ball and solid golf ball Takuo Sone 2001-02-27
6191234 Conjugated diolefin-based copolymer rubber and composition thereof Toshihiro Tadaki, Tamotsu Nagaoka, Hiroshi Akema 2001-02-20
6130299 Method for preparing conjugated diene polymer Takuo Sone, Akio Takashima, Katsutoshi Nonaka 2000-10-10
5548045 Process for producing polybutadiene Kohei Goto, Shoji Ogasahara, Masahiro Shibata, Yoshiyuki Michino, Kazuo Soga +1 more 1996-08-20
5527860 Process for producing a diolefin polymer or copolymer and a rubber composition containing such a diolefin polymer or copolymer Yoshitaka Yamakawa, Kyouyuu Yasuda, Hideaki Yokoyama, Tatsuro Hamada 1996-06-18
5432232 Rubber compositions Toshihiro Tadaki, Tatsuro Hamada, Fuji Yamanaka 1995-07-11
5206301 Hydrogenated block copolymer and composition comprising the same Noboru Oshima, Tooru Shibata, Yasuo Takeuchi 1993-04-27
5086136 Process for producing high trans low vinyl conjugated diene (co)polymer Akio Takashima, Takashi Imamura 1992-02-04