Issued Patents All Time
Showing 1–25 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5280000 | Catalyst for olefin polymerization and process for producing olefin polymer using the catalyst | Masahiro Kakugo, Tatsuya Miyatake, Yoshio Kawai, Kooji Mizunuma | 1994-01-18 |
| 5026889 | Catalyst system for olefin polymerization and method for production of olefin polymers by using the same | Yoshiharu Fukui, Toshio Sasaki, Masahisa Okawa, Hideaki Matsuura | 1991-06-25 |
| 4891411 | Process for producing olefin polymers and catalyst used therein | Toshio Sasaki, Masaaki Katao, Kiyoshi Kawai | 1990-01-02 |
| 4820775 | Alpha-olefin block copolymer particles and process for the production thereof | Masahiro Kakugo, Hajime Sadatoshi, Hiroyuki Kora, Toshio Sasaki, Junpei Kojima +2 more | 1989-04-11 |
| 4806433 | Process for producing olefin polymer | Toshio Sasaki, Takeshi Ebera, Kiyoshi Kawai | 1989-02-21 |
| 4771023 | Process for producing olefin polymers and catalyst used therein | Toshio Sasaki, Masaaki Katao, Kiyoshi Kawai | 1988-09-13 |
| 4761392 | Catalyst system for polymerization of olefins | Toshio Sasaki, Junpei Kojima | 1988-08-02 |
| 4743665 | Process for producing .alpha.-olefin polymers | Toshio Sasaki, Masaaki Katao, Kiyoshi Kawai | 1988-05-10 |
| RE32542 | Molded products of polypropylene | Kiyoshi Matsuyama, Masahiro Kakugo, Yukio Naito, Seiichiro Ima | 1987-11-10 |
| 4696979 | Process for producing propylene copolymer | Masahiro Kakugo, Junpei Kozima, Kizuku Wakatsuki | 1987-09-29 |
| 4672050 | Catalyst and process for producing alpha-olefin polymers using the same | Toshio Sasaki, Masaaki Katao, Kiyoshi Kawai | 1987-06-09 |
| 4645808 | Process for producing olefin polymer | Toshio Sasaki, Junpei Kojima | 1987-02-24 |
| 4554264 | Process for producing .alpha.-olefin polymers using novel catalyst system | Toshio Sasaki, Junpei Kojima, Akira Nunose | 1985-11-19 |
| 4551501 | Crystalline propylene polymer composition | Masahiro Kakugo, Junpei Kojima, Kizuku Wakatsuki | 1985-11-05 |
| 4533706 | Catalyst and process using same for producing olefin polymer | Toshio Sasaki, Junpei Kojima | 1985-08-06 |
| 4514512 | Method for the production of solid titanium trichloride catalyst | Yukio Naito, Toshio Sasaki, Junpei Kojima, Hiroshi Yoshioka, Akira Nunose | 1985-04-30 |
| 4504637 | Olefin polymerization catalysts and process for producing olefin polymers by using such catalysts | Toshio Sasaki, Junpei Kojima | 1985-03-12 |
| 4485035 | Process for producing highly stereoregular .alpha.-olefin polymers | Yoshiharu Fukui, Toshio Sasaki, Masahisa Okawa, Hideaki Matsuura | 1984-11-27 |
| 4461881 | Process for the production of purified propylene homopolymers or copolymers | Kiyoshi Matsuyama, Masahiro Kakugo, Yukio Naito, Takatoshi Suzuki | 1984-07-24 |
| 4414373 | Propylene-ethylene copolymer having improved stretchability | Kiyoshi Matsuyama, Masahiro Kakugo, Yukio Naito, Seiichiro Ima, Katsuyoshi Yamashita | 1983-11-08 |
| 4412049 | Process for producing highly stereoregular .alpha.-olefin polymers | Yukio Naito, Toshio Sasaki, Junpei Kojima, Hiroshi Yoshioka | 1983-10-25 |
| 4382065 | Fluidized bed apparatus and method of using | Masahiro Kakugo, Koji Yamada, Hajime Sadatoshi | 1983-05-03 |
| 4367322 | Process for producing propylene copolymer | Kiyoshi Matsuyama, Masahiro Kakugo, Yukio Naito, Akira Nunose, Masaharu Nishioka | 1983-01-04 |
| 4364851 | Process for producing olefin polymers | Yoshiharu Fukui, Toshio Sasaki, Masahisa Okawa, Hideaki Matsu-Ura, Yasuharu Yamada | 1982-12-21 |
| 4355144 | Process for producing a propylene-ethylene copolymer having improved stretchability | Kiyoshi Matsuyama, Masahiro Kakugo, Yukio Naito, Seiichiro Ima, Katsuyoshi Yamashita | 1982-10-19 |