Issued Patents All Time
Showing 1–25 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6191302 | Process for producing alkyl nitrite | Shuji Tanaka, Shinichi Yoshida | 2001-02-20 |
| 6018072 | Process for producing a diaryl oxalate | Shuji Tanaka, Yuki Nishida, Satoru Fujitsu | 2000-01-25 |
| 5922827 | Process for producing a polycarbonate | Shuji Tanaka, Katsumasa Harada, Ryoji Sugise, Akinori Shiotani, Katsutoshi Washio | 1999-07-13 |
| 5892089 | Process for preparing diaryl carbonate | Katsumasa Harada, Ryoji Sugise, Koichi Kashiwagi, Yoichi Imbe, Takashi Doi +2 more | 1999-04-06 |
| 5892091 | Catalyst for decarbonylation reaction | Katsumasa Harada, Yoichi Imbe, Shuji Tanaka, Satoru Fujitsu, Ryoji Sugise +4 more | 1999-04-06 |
| 5869729 | Method of producing an ester compound | Shuji Tanaka, Yuki Nishida, Noriaki Manada, Toshio Kurafuji, Masato Murakami | 1999-02-09 |
| 5834615 | Process for producing diaryl carbonate | Shuji Tanaka, Katsumasa Harada, Ryoji Sugise | 1998-11-10 |
| 5811573 | Process for producing a diaryl carnonate | Shuji Tanaka, Yuki Nishida, Ii Hirofumi, Satoru Fujitsu, Katsumasa Harada +3 more | 1998-09-22 |
| 5731453 | Process for producing a diaryl carbonate | Shuji Tanaka, Yuki Nishida, 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 | Shuji Tanaka, Yuki Nishida, Hirofumi Ii, Satoru Fujitsu | 1998-01-06 |
| 5648510 | Process for preparation of diaryl carbonate | Katsumasa Harada, Yoichi Imbe, Shuji Tanaka, Satoru Fujitsu, Ryoji Sugise +2 more | 1997-07-15 |
| 5631396 | Process for continuously producing dimethyl carbonate | Shinichi Yoshida, Shuji Tanaka, Yutaka Asada | 1997-05-20 |
| 5534648 | Process for continuously producing dimethyl carbonate | Shinichi Yoshida, Shuji Tanaka | 1996-07-09 |
| 5514829 | Process for continuously producing dimethyl carbonate | Shinichi Yoshida, Shuji Tanaka | 1996-05-07 |
| 5463109 | Process for preparing carbamates | Shuji Tanaka | 1995-10-31 |
| 5380906 | Process for preparing carbonic diester | Shuji Tanaka, Kunioki Kodama, Takayoshi Kaneko, Tetsuro Kawashita, Yuki Nishida +2 more | 1995-01-10 |
| 5315032 | Method of producing an N-hydroxycarbamate compound | Shuji Tanaka, Katsuhiko Mizutare, Masahiro Kondo | 1994-05-24 |
| 5292917 | Process for purifying dimethyl carbonate | Shinichi Yoshida, Shuji Tanaka | 1994-03-08 |
| 5276200 | Method of preparing sodium formyl acetone and 4,4-dimethoxy-2-butanone | Shuji Tanaka, Masahiro Kondo | 1994-01-04 |
| 5214185 | Continuous process for preparing dimethyl carbonate | Shin-ichi Yoshida, Shuji Tanaka | 1993-05-25 |
| 5162563 | Process for preparing a diester of carboxylic acid | Katsuhiko Mizutare, Shuji Tanaka | 1992-11-10 |
| 5037982 | Method of purifying 2-methyl-4-amino-5-aminomethylpyrimidine | Masayoshi Yamashita, Hiroshi Yoshida | 1991-08-06 |
| 4978766 | Process for producing 2-hydroxymethylene-3,3-dialkoxypropanenitrile alkali metal salt and process for obtaining alcoholic slurry of said compound from its synthetic reaction mixture | Shuzo Fujikawa, Masayoshi Yamashita | 1990-12-18 |
| 4892948 | 2-methyl-4-amino-5-aminomethylpyrimidine carbonate, process for preparing the same and method of purification of 2-methyl-4-amino-5-aminomethylpyrimidine using the same | Masayoshi Yamashita, Hiroshi Yoshida | 1990-01-09 |
| 4539403 | Process for the preparation of a 2-alkyl-4-amino-5-aminomethylpyrimidine | Kozo Fujii, Hiroyuki Sawada, Shuji Tanaka, Mamoru Nakai, Hiroshi Yoshida +2 more | 1985-09-03 |