Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11021499 | Bis(6-methyl-3-sulphophenyl)(2-methylphenyl)phosphine, ammonium salt thereof, and method for producing same | Eriko HONDA, Tatsuya Yoshikawa, Tomoaki Tsuji, Hitoshi KOIZUMI, Nobumichi KUMAMOTO | 2021-06-01 |
| 10696701 | Bis(6-methyl-3-sulphophenyl)phenylphosphine, ammonium salt thereof, and method for producing same | Eriko HONDA, Tatsuya Yoshikawa, Tomoaki Tsuji, Hitoshi KOIZUMI, Nobumichi KUMAMOTO | 2020-06-30 |
| 8362237 | Optical-isomer separating agent for chromatography and process for producing the same | Tadashi Ema, Takashi Sakai, Daisuke Tanida, Atsushi Ohnishi, Kenichiro Miyazawa | 2013-01-29 |
| 5314592 | Method for enrichment of oxygen 18 with a laser | Tetsuro Majima, Shigeyoshi Arai | 1994-05-24 |
| 4941956 | Method of enriching the isotope carbon 13 by means of laser irradiation | Shigeyoshi Arai, Shohei Isomura, Hayato Kaetsu | 1990-07-17 |
| 4824537 | Working substances used in laser isotope separation and method of laser isotope separation | Shigeyoshi Arai, Masatsugu Kamioka, Yo-ichi Ishikawa, Shohei Isomura, Takao Oshima +1 more | 1989-04-25 |