Issued Patents 1994
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5371170 | Polycarbonate production method | Takeshi Sakashita | 1994-12-06 |
| 5364926 | Preparing method of polycarbonate resin compounds for the optical use | Takeshi Sakashita, Kimiyoshi Miura, Kenichi Tominari, Akio Kanezawa | 1994-11-15 |
| 5324809 | Melt catalytic preparation of copolymeric polycarbonate from hydroquinone | Takeshi Sakashita, Kotaro Kishimura, Shuichi Uchimura | 1994-06-28 |
| 5306801 | Catalytic melt preparation of polycarbonate with subsequent addition of sulfonic acid compound | Takeshi Sakashita | 1994-04-26 |
| 5286834 | Melt preparation of copolycarbonate with alkaline compound catalyst and boric acid compound catalyst | Takeshi Sakashita, Kotaro Kishimura | 1994-02-15 |
| 5276109 | Optical polycarbonate compositions | Takeshi Sakashita, Takashi Nagai | 1994-01-04 |
| 5276129 | Polycarbonate containing terminal hydroxy groups, low sodium and chlorine content | Takeshi Sakashita | 1994-01-04 |