Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6087424 | Rubber composition | Keisaku Yamamoto, Kizuku Wakatsuki | 2000-07-11 |
| 5929149 | Rubber composition for tire tread | Toshiro Matsuo | 1999-07-27 |
| 5703151 | Rubber composition | Keisaku Yamamoto, Kizuku Wakatsuki | 1997-12-30 |
| 5516862 | Process for producing ethylene-alpha-olefin copolymer rubber | Keisaku Yamamoto, Kizuku Wakatsuki, Tadaaki Nishiyama | 1996-05-14 |
| 5245007 | Method for purifying ethylene-.alpha.-olefin copolymer | Keisaku Yamamoto, Kizuku Wakatsuki, Kiyoyuki Sugimori, Katsunari Inagaki | 1993-09-14 |
| 5191041 | Catalyst for olefinic hydrocarbon polymerization and process and producing olefinic hydrocarbon polymer | Keisaku Yamamoto, Akio Imai, Kiyoyuki Sugimori, Kizuku Wakatsuki | 1993-03-02 |
| 5122493 | Catalyst for olefinic hydrocarbon polymerization and process for producing olefinic hydrocarbon polymer | Keisaku Yamamoto, Akio Imai, Kiyoyuki Sugimori, Kizuku Wakatsuki | 1992-06-16 |