Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8957233 | Method for producing optically active 1,2-bis(dialkylphosphino)benzene derivative | Ken Tamura, Tsuneo Imamoto | 2015-02-17 |
| 8198471 | 2, 2′-bis (dialkylphosphino) biphenyl compound, production method thereof, and metal complex comprising the compound as ligand | Ken Tamura, Tsuneo Imamoto | 2012-06-12 |
| 8114212 | Powdery silica composite particles and process for producing the same, silica composite particle dispersion, and resin composition | Hideo Sawada, Katsuhiko Tsunashima | 2012-02-14 |
| 6649728 | Catalyst for curing epoxy resins, method for making the same, epoxy resin composition, and powder coating composition | Hiroshi Kawakabe, Yoshifusa Hara | 2003-11-18 |
| 6603032 | 1,2-bis(methyl(1,1,3,3-tetramethylbutyl)-phosphino)ethane, process the preparation thereof, transition metal complexes containing the same as a ligand and uses thereof | Hiroyuki Nohira | 2003-08-05 |
| 6214196 | Method of producing bisphosphine oxide | Hiroyuki Nohira | 2001-04-10 |
| 6177591 | Optically active phosphine oxide carboxylic acid and method of producing the same | Hiroyuki Nohira | 2001-01-23 |
| 6121494 | Method of producing optically active vinyl phosphine oxide | Hiroyuki Nohira | 2000-09-19 |
| 6080885 | Process for preparing a phosphonium salt compound having an acryl group | Tsutomu Watanabe | 2000-06-27 |
| 6025525 | Highly pure monoalkylphosphine and method for producing same | Tsutomu Watanabe, Natsuhiro Sano | 2000-02-15 |
| 5925784 | Bis (1,1,3,3-tetramethylbutyl) phosphinic acid compound, a production method thereof and an extracting agent | Tsutomu Watanabe, Kaoru Takeuchi | 1999-07-20 |
| 5892120 | Highly pure monoalkylphosphine and method for producing same | Tsutomu Watanabe, Natsuhiro Sano | 1999-04-06 |
| 5872279 | Bis(1,1,3,3-tetramethylbutyl) phosphinic acid compound, a production method thereof and an extracting agent | Tsutomu Watanabe, Kaoru Takeuchi | 1999-02-16 |
| 5679849 | Method of producing a bis(2-carboxyethyl)alkyl phosphine oxide and a derivative thereof | Tsutomu Watanabe, Kaoru Takeuchi | 1997-10-21 |
| 5663419 | Bifunctional alkyl phosphine oxide and production method thereof | Tsutomu Watanabe, Seiji Shimura | 1997-09-02 |
| 5536880 | Monoalkylphosphine and method of producing the same | Seiji Shimura | 1996-07-16 |
| 5354918 | Highly pure monoalkylphosphine | Hiromi Ohsaki, Kazuyuki Asakura, Yutaka Demura, Tomio Yanai | 1994-10-11 |
| 5147409 | Agent and method for treating wool fibers wherein the agent is tris(hydroxypropyl)phosphine and/or alkylene oxide addition products thereof | Seiji Shimura, Yoshifusa Hara, Kunio Kako, Akira Saito | 1992-09-15 |