Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4978722 | Method for producing a propylene-.alpha.-olefin block copolymer | Yumito Uehara, Hideshige Kato, Yukimasa MATSUDA | 1990-12-18 |
| 4808667 | Method for producing an .alpha.-olefin block copolymer | Yumito Uehara, Yasuhiro Nishihara | 1989-02-28 |
| 4534953 | Process for preparing solid titanium trichloride useful for the polymerization of an .alpha.-olefin | Yumito Uehara | 1985-08-13 |
| 4492787 | Process for continuously producing propylene-ethylene block copolymer | Ryokichi Takashima, Yumito Uehara, Yasuhiro Nishihara, Hidetoshi Yamamoto | 1985-01-08 |
| 4381383 | Process for producing polyolefins | Masayoshi Hasuo, Yoshinori Suga, Masatoshi Suzuki, Yasuhiro Nishihara | 1983-04-26 |
| 4200717 | Preparation of propylene polymer-containing solid titanium trichloride and propylene polymers using same | Toshizo Abe, Yasuhiro Nishihara, Yukimasa Matuda | 1980-04-29 |