Issued Patents All Time
Showing 26–50 of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5219938 | Modified diene polymer rubbers | Tomoaki Seki, Keisaku Yamamoto | 1993-06-15 |
| 5191041 | Catalyst for olefinic hydrocarbon polymerization and process and producing olefinic hydrocarbon polymer | Hayato Saba, Keisaku Yamamoto, Kiyoyuki Sugimori, Kizuku Wakatsuki | 1993-03-02 |
| 5189108 | Modified polymer rubber and process for preparing the same | Mitsuji Tsuji, Takashi Sanada, Keisaku Yamamoto | 1993-02-23 |
| 5189109 | Modified diene polymer rubbers | Tomoaki Seki | 1993-02-23 |
| 5128416 | Modified diene polymer rubbers | Tomoaki Seki, Keisaku Yamamoto | 1992-07-07 |
| 5122493 | Catalyst for olefinic hydrocarbon polymerization and process for producing olefinic hydrocarbon polymer | Hayato Saba, Keisaku Yamamoto, Kiyoyuki Sugimori, Kizuku Wakatsuki | 1992-06-16 |
| 5082908 | Ethylene-.alpha.-olefin copolymer and process for producing the same | Kiyoyuki Sugimori, Keisaku Yamamoto, Minoru Takane | 1992-01-21 |
| 5037891 | Modified ethylene-.alpha.-olefin copolymer rubber and a process for producing the same | Hiroyoshi Takao, Mitsuji Tsuji | 1991-08-06 |
| 5015692 | Process for preparing modified diene polymer rubbers | Hiroyoshi Takao, Tomoaki Seki, Mitsuji Tsuji | 1991-05-14 |
| 4981760 | Ethylene-alpha-olefin copolymer and films obtained therefrom | Yukio Naito, Kohzoh Miyazaki, Yuji Gotoh, Masashi Hamba, Kiyoyuki Sugimori | 1991-01-01 |
| 4957976 | Process for preparing diene polymer rubbers | Hiroyoshi Takao, Tomoski Seki, Mitsuji Tsuji | 1990-09-18 |
| 4918142 | Rubber composition of tire tread containing block copolymer coupled with dicarboxylic acid ester | Yuichi Saito, Takuzoh Yabuta, Hiroyoshi Takao, Mitsuji Tsuji | 1990-04-17 |
| 4885338 | Modified diene polymer rubbers | Hiroyoshi Takao, Tomoaki Seki | 1989-12-05 |
| 4845173 | Process for producing thermoplastic elastomers | Nobuyuki Yoshida, Tomoaki Seki | 1989-07-04 |
| 4812527 | Rubber composition for tire treads containing dicarboxylic acid diester coupled block polymers | Hiroyoshi Takao, Nabuyuki Yoshida, Mitsuji Tsuji, Yuichi Saito | 1989-03-14 |
| 4743652 | Elastomeric copolymer of aromatic vinyl compounds and butadiene | Nobuyuki Yoshida, Yasushi Okamoto, Tomoaki Seki, Hiroshi Furukawa, Yuichi Saito | 1988-05-10 |
| 4737535 | Rubber composition for tire tread | Hiroshi Furukawa, Yuichi Saito, Nobuyuki Yoshida | 1988-04-12 |
| 4710554 | Polybutadiene and process for preparing the same | Yasushi Okamoto, Masatoshi Saito | 1987-12-01 |
| 4647614 | Diene elastomer compositions | Hiroyoshi Takao, Nobuyuki Yoshida | 1987-03-03 |
| 4639494 | Process for producing polystyrene | Yasushi Okamoto, Masatoshi Saito | 1987-01-27 |
| 4537936 | Diene rubber composition, method of preparing the same and tire employing said composition | Hiroyoshi Takao, Keisaku Yamamoto, Nobuyuki Yoshida, Hiroshi Furukawa, Yuichi Saito +1 more | 1985-08-27 |
| 4523618 | Branched polymer, process for the preparation thereof, tire tread rubber composition and tire | Keisaku Yamamoto, Nobuyuki Yoshida, Yasushi Okamoto, Tomoaki Seki, Hiroshi Furukawa +1 more | 1985-06-18 |
| 4482678 | Diene rubber composition and tire using it in tread | Hiroshi Furukawa, Yuichi Saito, Nobuyuki Yoshida, Yasushi Okamoto | 1984-11-13 |
| 4471093 | Elastomer composition comprising a blend of SBR rubbers | Hiroshi Furukawa, Yuichi Saito, Keisaku Yamamoto, Nobuyuki Yoshida, Yasushi Okamoto | 1984-09-11 |
| 4436873 | Conjugated diene block polymer and process for preparing the same | Hiroshi Furukawa, Yuichi Saito, Keisaku Yamamoto, Hiroyoshi Takao, Nobuyuki Yoshida | 1984-03-13 |