Issued Patents All Time
Showing 26–36 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5173347 | Polycarbonate and optical disk therefrom | Akihiro Izuka, Tsunehisa Katsuki, Ikuo Takahashi, Kenichi Sasaki | 1992-12-22 |
| 5168112 | Process for the preparation of a polycarbonate with piperidinyl pyridine catalyst | Mitsuru Ueda, Yoshihiro Iguchi, Yasuhiro Oshino | 1992-12-01 |
| 5149770 | Preparation of a polycarbonate with electron donative amine compound and alkali or alkaline earth metal compound | Tsutomu Yamato | 1992-09-22 |
| 5025083 | Process for preparation of polycarbonate | Mitsuru Ueda, Yoshihiro Iguchi, Yasuhiro Oshino | 1991-06-18 |
| 5002362 | Plastic optical fiber | Ikuo Takahashi, Kenichi Sasaki | 1991-03-26 |
| 4978578 | Optical disk of polycarbonate | Ikuo Takahashi, Kenichi Sasaki, Yoshiro Iguchi, Yutaka Fukuda | 1990-12-18 |
| 4831110 | Co-polycarbonate copolymer from 2,2-bis(4-hydroxy-3-tertiary butyl phenyl)propane and optical disk | Ikuo Takahashi, Kenichi Sasaki, Tsuyoshi Habe, Tsuyoshi Sei | 1989-05-16 |
| 4672141 | Polyalkylene ether glycols | Masatoshi Motoi, Yuzo Toga, Ichiro Okamoto | 1987-06-09 |
| 4599460 | Polyalkylene ether glycol copolymers | Yuzo Toga, Ichiro Okamoto | 1986-07-08 |
| 4522913 | Monoacrylate or diacrylate of 2-methyl-propylene glycol and photosensitive composition containing the diacrylate | Yuzo Toga | 1985-06-11 |
| 4458063 | 2-Methyl-1,3-propylene glycol mono- or di-alkylene oxide ether | Yuzo Toga | 1984-07-03 |