Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6018072 | Process for producing a diaryl oxalate | Keigo Nishihira, Shuji Tanaka, Satoru Fujitsu | 2000-01-25 |
| 5869729 | Method of producing an ester compound | Keigo Nishihira, Shuji Tanaka, Noriaki Manada, Toshio Kurafuji, Masato Murakami | 1999-02-09 |
| 5811573 | Process for producing a diaryl carnonate | Keigo Nishihira, Shuji Tanaka, Ii Hirofumi, Satoru Fujitsu, Katsumasa Harada +3 more | 1998-09-22 |
| 5731453 | Process for producing a diaryl carbonate | Keigo Nishihira, Shuji Tanaka, Hirofumi Ii, Satoru Fujitsu, Katsumasa Harada +3 more | 1998-03-24 |
| 5705677 | Diphenyl oxalate-phenol adduct, process for producing the adduct and method of producing diphenyl oxalate from the adduct | Keigo Nishihira, Shuji Tanaka, Hirofumi Ii, Satoru Fujitsu | 1998-01-06 |
| 5380906 | Process for preparing carbonic diester | Keigo Nishihira, Shuji Tanaka, Kunioki Kodama, Takayoshi Kaneko, Tetsuro Kawashita +2 more | 1995-01-10 |