Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7674413 | Process for producing cycloolefin resin composition | Sadao Yoshimoto, Noboru Koga, Takeshi Suzuki, Atsushi Shibuya | 2010-03-09 |
| 5830981 | Process for producing polyethylene terephthalate | Hiroshi Koreishi, Yasuhiro Tanaka | 1998-11-03 |
| 5525701 | Method for the manufacture of aromatic polycarbonate | Kenichi Tominari, Akio Kanezawa, Takeshi Sakashita, Tomoaki Shimoda | 1996-06-11 |
| 5502153 | Method for preparing optical-grade polycarbonate compositions | Takeshi Sakashita, Tomoaki Shimoda, Kenichi Tominari, Akio Kanezawa | 1996-03-26 |
| 5364926 | Preparing method of polycarbonate resin compounds for the optical use | Takeshi Sakashita, Tomoaki Shimoda, Kenichi Tominari, Akio Kanezawa | 1994-11-15 |
| 4675373 | Polyhydroxy polyether, process for its production, and its use | Tadao Yatsu, Etsuji Ishimaru | 1987-06-23 |