Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4772679 | Crystalline aromatic polyketone and process for producing the same | Isaburo Fukawa, Haruyuki Yoneda | 1988-09-20 |
| 4526941 | Polymerization of olefins | Tadashi Ikegami, Masayoshi Miya, Katsuhiko Takaya | 1985-07-02 |
| 4471066 | Polymerization of olefins | Yoshihiko Katayama, Tadashi Ikegami, Masayasu Furusato | 1984-09-11 |
| 4431568 | Catalyst for polymerization of olefins and polymerization process employing such catalyst | Masayoshi Miya, Tadashi Ikegami | 1984-02-14 |
| 4423185 | Thermoplastic resinous composition | Koichi Matsumoto, Yoshihiko Katayama | 1983-12-27 |
| 4410595 | Laminate of thermoplastic resinous composition | Koichi Matsumoto, Yoshihiko Katayama | 1983-10-18 |
| 4399272 | Process for producing polyacetal copolymers | Minoru Hamada, Kazuhiko Matsuzaki, Muneaki Aminaka | 1983-08-16 |
| 4387045 | Olefin polymerization catalyst and a process for producing polyolefins by the use of said catalyst | Hideo Morita, Tadashi Ikegami, Masayasu Furusato | 1983-06-07 |
| 4381252 | Catalyst for producing polyolefins | Yoshihiko Katayama, Tadashi Ikegami, Masayasu Furusato | 1983-04-26 |
| 4380620 | Process for preparing polyoxymethylenes | Kazuhiko Matsuzaki, Minoru Hamada | 1983-04-19 |
| 4377667 | Polyacetal and process of producing same | Minoru Hamada, Kazuhiko Matsuzaki | 1983-03-22 |
| 4376720 | Olefin polymerization catalyst and olefin polymerization method using such catalyst | Yoshihiko Katayama, Tadashi Ikegami, Shigeo Tsuyama | 1983-03-15 |
| 4342708 | Hydrocarbon-soluble diorganomagnesium compounds, hydrocarbon solutions containing the same and processes for preparation thereof | Yoshihiko Katayama, Tadashi Ikegami, Shigeo Tsuyama | 1982-08-03 |
| 4336352 | Blend of three ethylene polymers | Yoshihiko Katayama, Tadashi Ikegami, Shigeru Mizutani | 1982-06-22 |
| 4335229 | Process for polymerizing an .alpha.-olefin | Yoshihiko Katayama, Tadashi Ikegami, Masayasu Furusato | 1982-06-15 |
| 4331439 | Process for preventing color migration in colored moldings of polyoxymethylene resins | Minoru Hamada, Jyunzo Masamoto, Takeo Yoshida, Hiroshi Hazawa | 1982-05-25 |
| 4330646 | Polymerization of an .alpha.-olefin | Yoshihiko Katayama, Tadashi Ikegami, Masayasu Furusato | 1982-05-18 |
| 4330651 | Polymerization of .alpha.-olefins | Yoshihiko Katayama, Tadashi Ikegami, Masayasu Furusato | 1982-05-18 |
| 4330647 | Process for polymerizing .alpha.-olefins | Yoshihiko Katayama, Tadashi Ikegami, Masayasu Furusato | 1982-05-18 |
| 4330650 | Catalyst for polymerization of olefins | Hideo Morita, Masayoshi Miya, Katsuhiko Takaya, Haruyuki Yoneda | 1982-05-18 |
| 4312783 | Catalyst for polymerization of olefins | Masayoshi Miya, Katsuhiko Takaya, Haruyuki Yoneda | 1982-01-26 |
| 4264472 | Catalyst for preparing polyethylene | Tadashi Ikegami, Yoshihiko Katayama, Shigeo Tsuyama, Yukitoshi Iwashita | 1981-04-28 |
| 4255280 | Catalyst for polymerization of olefins | Hideo Morita, Masayoshi Miya, Katsuhiko Takaya, Haruyuki Yoneda | 1981-03-10 |
| 4230831 | Polyethylene blend composition | Yoshihiko Katayama, Tadashi Ikegami, Kisoo Moriguchi, Shigeru Mizutani | 1980-10-28 |
| 4219453 | Inorganic filler-incorporated ethylene polymer film | Kisoo Moriguchi, Yoshihiko Katayama | 1980-08-26 |