Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11498935 | Optically active bisphosphinomethane, method for producing the same, and transition metal complex and asymmetric catalyst | Tsuneo Imamoto, Ken Tamura | 2022-11-15 |
| 11453687 | Production method of biarylphosphine | Ken Tamura, Yuki Sawatsugawa | 2022-09-27 |
| 11407863 | Coated particles and production method therefor | Tomonao Naruhashi, Eri Furui | 2022-08-09 |
| 11084835 | 2,3-bisphosphinopyrazine derivative, method for producing same, transition metal complex, asymmetric catalyst, and method for producing organic boron compound | Hajime Ito, Hiroaki Iwamoto, Tsuneo Imamoto, Ken Tamura | 2021-08-10 |
| 7109286 | Phosphorus-containing hydroquinone derivatives, process for their production, phosphorus-containing epoxy resins made by using the derivatives, flame-retardant resin compositions, sealing media and laminated sheets | Ken Tamura, Eiichi Tatsuya, Yoshirou Kaneda | 2006-09-19 |
| 6025525 | Highly pure monoalkylphosphine and method for producing same | Masashi Sugiya, Tsutomu Watanabe | 2000-02-15 |
| 5892120 | Highly pure monoalkylphosphine and method for producing same | Masashi Sugiya, Tsutomu Watanabe | 1999-04-06 |