Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9051234 | Method for producing alkanediol | Yasutaka Yoshida, Kenji Hirotsu, Takashi Doi, Kouichi Kashiwagi, Ryo Fujimoto +1 more | 2015-06-09 |
| 8940946 | Method for producing high-purity 1,5-pentanediol | Yasutaka Yoshida, Kenji Hirotsu, Ryo Fujimoto, Ryousuke Katsura, Takashi Doi +1 more | 2015-01-27 |
| 8618335 | Process for preparing aromatic aldehyde compound | Takashi Doi, Yoshihiro Yoshida, Shinji Yasuda, Yoshiyuki Watanabe, Daisuke Douyama | 2013-12-31 |
| 8450508 | Method of retaining the quality of 2-methyl-3-(3,4-methylenedioxyphenyl)propanal and process for producing the same | Takashi Doi, Yoshihiro Yoshida, Eiji Sajiki | 2013-05-28 |
| 8344166 | Method of retaining the quality of 2-methyl-3-(3,4-methylenedioxyphenyl) propanal and process for producing the same | Takashi Doi, Yoshihiro Yoshida, Eiji Sajiki | 2013-01-01 |
| 8338589 | Process for producing laurolactam | Junichi Kugimoto, Nobuhiro Ii, Takashi Doi, Tadashi Gotou, Hideo Shimomura +2 more | 2012-12-25 |
| 8168809 | 2-methyl-3-(3,4-methylenedioxyphenyl)propanal, and method for production thereof | Takashi Doi, Yoshihiro Yoshida, Eiji Sajiki | 2012-05-01 |
| 8039649 | Method of retaining the quality of 2-methyl-3-(3,4-methylenedioxyphenyl)propanal and process for producing the same | Takashi Doi, Yoshihiro Yoshida, Eiji Sajiki | 2011-10-18 |
| 6018072 | Process for producing a diaryl oxalate | Keigo Nishihira, Shuji Tanaka, Yuki Nishida | 2000-01-25 |
| 5892091 | Catalyst for decarbonylation reaction | Katsumasa Harada, Yoichi Imbe, Keigo Nishihira, Shuji Tanaka, Ryoji Sugise +4 more | 1999-04-06 |
| 5811573 | Process for producing a diaryl carnonate | Keigo Nishihira, Shuji Tanaka, Yuki Nishida, Ii Hirofumi, Katsumasa Harada +3 more | 1998-09-22 |
| 5731453 | Process for producing a diaryl carbonate | Keigo Nishihira, Shuji Tanaka, Yuki Nishida, Hirofumi Ii, 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, Yuki Nishida, Hirofumi Ii | 1998-01-06 |
| 5648510 | Process for preparation of diaryl carbonate | Katsumasa Harada, Yoichi Imbe, Keigo Nishihira, Shuji Tanaka, Ryoji Sugise +2 more | 1997-07-15 |
| 5292916 | Method of producing carbonic acid diester | Tokuo Matsuzaki, Tuneo Shimamura, Yoshinobu Toriyahara | 1994-03-08 |
| 5214184 | Method of producing carbonic acid diester | Tokuo Matuzaki, Tsuneo Simamura, Yosinobu Toriyahara | 1993-05-25 |