Issued Patents All Time
Showing 1–25 of 50 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8431709 | Acylation reaction of hydroxyl group | Kazushi Mashima, Takashi Ohshima, Takanori Iwasaki | 2013-04-30 |
| 7964744 | Method for producing a ruthenium complex | Hideki Nara, Takahiro Fujiwara | 2011-06-21 |
| 7754889 | Optically active transition metal-diamine compound and process for producing optically active alcohol with the same | Akira Amano, Daisuke Igarashi | 2010-07-13 |
| 7294601 | Phosphines, transition metal complexes containing the same as the ligand, and process for production of optically active carboxylic acids | Akira Amano, Daisuke Igarashi | 2007-11-13 |
| 6596887 | Process for producing an optically active ruthenium-phosphine complex and process for producing an optically active alcohol by using the complex | Koichi Mikami, Toshinobu Korenaga | 2003-07-22 |
| 6492545 | Process for producing optically active alcohol | Takao Saito, Tohru Yokozawa, Kazuhiko Matsumura | 2002-12-10 |
| 6472539 | Production process of diphosphine oxide and diphosphonate | Tohru Yokozawa, Takao Saito, Takero Ishizaki | 2002-10-29 |
| 6465594 | Phosphine derivative and polymer thereof and transition metal complex comprising the same | Kyoko Tamao | 2002-10-15 |
| 6342644 | Method for producing 1-menthol | Takaji Matsumoto | 2002-01-29 |
| 6333291 | Optically active diphosphine compound, production intermediate thereof, transition metal complex containing the compound as ligand and asymmetric hydrogenation catalyst containing the complex | Tohru Yokozawa, Takao Saito, Takero Ishizaki | 2001-12-25 |
| 6313317 | Ruthenium-phosphine complex and method for producing the same | Takao Saito, Tohru Yokozawa | 2001-11-06 |
| 6040465 | Process for producing optically active .beta.-lactones | Sotaro Miyano, Tetsutaro Hattori, Osamu Uesugi, Yasufumi Tamai | 2000-03-21 |
| 5922918 | Method for making an optically active diphosphine ligand | Xiaoyaong Zhang | 1999-07-13 |
| 5919962 | Process for preparing ruthenium-phosphine complex | Kazushi Mashima, Kyoko Tamao, Tetsuo Ota | 1999-07-06 |
| 5847222 | Optically active diphosphine compound, method for making the compound, transition metal complex having the compound as ligand and method for making optically active substance by use of the complex | Tohru Yokozawa, Kazuhiko Matsumura, Hidenori Kumobayashi | 1998-12-08 |
| 5808162 | Chiral unsymmetric diphosphine compound and transition metal complex containing the same as ligand | Xiaoyong Zhang, Tatsuya Omoto, Tohru Yokozawa, Tetsuro Yamasaki, Hidenori Kumobayashi | 1998-09-15 |
| 5789609 | Optically active diphosphine, transition metal complex containing the same, and process for producing optically active compound using the complex | Kyoko Tamao, Koji Inagaki | 1998-08-04 |
| 5714624 | Oxotitanium complex, asymmetric hydrogenation catalyst comprising the complex, and process for producing .beta.-hydroxy ketone or .alpha.-hydroxy carboxylic acid ester using the complex | Takeshi Nakai, Dai Kitamoto | 1998-02-03 |
| 5705678 | Oxotitanium complex, asymmetric hydrogenation catalyst comprising the complex, and process for producing .beta.-hydroxy ketone or .alpha.-hydroxy carboxylic acid ester using the complex | Takeshi Nakai, Dai Kitamoto | 1998-01-06 |
| 5693868 | Method for producing optically active diphosphine compounds | Xiaoyong Zhang, Tatsuya Ohmoto, Akifumi Yoshida, Tohru Yokozawa | 1997-12-02 |
| 5631397 | Process for producing optically active diaminohexanone derivative | Tetsuro Yamasaki, Hidenori Kumobayashi, Toshiyuki Murayama, Noboru Sano, Takero Ishizaki | 1997-05-20 |
| 5616751 | Oxotitanium complex, asymmetric hydrogenation catalyst comprising the complex, and process for producing .beta.-hydroxy ketone or .alpha.-hydroxy carboxylic acid ester using the complex | Takeshi Nakai, Dai Kitamoto | 1997-04-01 |
| 5581007 | Process for preparing optically active allophenylnorstatin derivatives | Tetsuro Yamasaki, Hidenori Kumobayashi, Yoshifumi Yuasa, Tsukasa Sotoguchi | 1996-12-03 |
| 5563295 | Process for producing optically active carboxylic acid | Hidemasa Takaya, Xiaoyong Zhang, Kazuhiko Matsumura, Hidenori Kumobayashi | 1996-10-08 |
| 5530150 | Phosphine compound, complex containing the phosphine compound as ligand, process for producing optically active aldehyde using the phosphine compound or the complex, and 4-[(R)-1'-formylethyl]azetidin-2-one derivatives | Hidemasa Takaya, Nozomu Sakai, Kyoko Tamao, Satoshi Mano, Hidenori Kumobayashi +4 more | 1996-06-25 |