Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6902654 | Ultraviolet irradiation apparatus for photochemical reaction and preparation process of vitamin D derivative making use of the same | Tadao Michishita, Satoshi Watanabe, Masahiro Katoh, Kaname Tsuzaki, Koji Oikawa +1 more | 2005-06-07 |
| 5726330 | Highly crystalline 22-oxavitamin D derivatives | — | 1998-03-10 |
| 5436401 | 22-oxacholecalciferol derivative and process for preparing the same | Masahiro Kato, Kiyoshige Ochi, Hiroyoshi Watanabe, Noboru Kubodera | 1995-07-25 |