Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6169209 | Preparation of organic phosphonium chloride | Katsumasa Harada, Ryoji Sugise, Sadao Niida | 2001-01-02 |
| 5892089 | Process for preparing diaryl carbonate | Katsumasa Harada, Ryoji Sugise, Yoichi Imbe, Takashi Doi, Keigo Nishihira +2 more | 1999-04-06 |
| 5892091 | Catalyst for decarbonylation reaction | Katsumasa Harada, Yoichi Imbe, Keigo Nishihira, Shuji Tanaka, Satoru Fujitsu +4 more | 1999-04-06 |
| 5811573 | Process for producing a diaryl carnonate | Keigo Nishihira, Shuji Tanaka, Yuki Nishida, Ii Hirofumi, Satoru Fujitsu +3 more | 1998-09-22 |
| 5792883 | Preparation of diaryl carbonate | Katsumasa Harada, Ryoji Sugise, Takashi Doi, Sadao Niida, Toshio Kurafuji | 1998-08-11 |
| 5731453 | Process for producing a diaryl carbonate | Keigo Nishihira, Shuji Tanaka, Yuki Nishida, Hirofumi Ii, Satoru Fujitsu +3 more | 1998-03-24 |
| 5648510 | Process for preparation of diaryl carbonate | Katsumasa Harada, Yoichi Imbe, Keigo Nishihira, Shuji Tanaka, Satoru Fujitsu +2 more | 1997-07-15 |