Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11939322 | Method for producing tetracyclic compound | Hiroki Serizawa, Hiroshi Fukuda, Naoto Hama | 2024-03-26 |
| 9163051 | Crystal of spiroketal derivatives and process for preparation of spiroketal derivatives | Masatoshi Murakata, Takuma Ikeda, Nobuaki Kimura, Masahiro Nagase, Keisuke Yamamoto +3 more | 2015-10-20 |
| 8569520 | Crystal of spiroketal derivatives and process for preparation of spiroketal derivatives | Masatoshi Murakata, Takuma Ikeda, Nobuaki Kimura, Masahiro Nagase, Keisuke Yamamoto | 2013-10-29 |
| 8212059 | Process for producing vitamin D derivative using photoreaction | Yasuharu Kato, Kazutomo Kinoshita, Yasushi Kitoh, Takuma Ikeda, Tsuyoshi Haneishi +2 more | 2012-07-03 |
| 8173824 | Process for producing vitamin D derivative using convergent method | Kunio Ogasawara, Takashi Emura, Koji Takano, Keisuke Yamamoto, Yoshiaki Kato | 2012-05-08 |
| 7985744 | Vitamin D derivatives | Kazumi Morikawa, Masayuki Ohmori, Kazuki Shimizu, Takashi Emura | 2011-07-26 |
| 7074777 | Vitamin D derivatives | Hitoshi Shimizu, Kazuki Shimizu, Takashi Emura, Kazutomo Kinoshita | 2006-07-11 |
| 6555699 | 16-ENE-vitamin D derivatives | — | 2003-04-29 |
| 6538145 | 24-hydroxy vitamin D derivatives | Susumi Hatakeyama, Hiroyoshi Watanabe | 2003-03-25 |
| 6433200 | Intermediates for preparation of 16-ene-vitamin D derivatives | — | 2002-08-13 |
| 6326503 | 16-ENE-vitamin D derivatives | — | 2001-12-04 |
| 6184398 | 16-ene-vitamin D derivatives | — | 2001-02-06 |
| 5824811 | 22-Thiavitamin D.sub.3 derivatives | Noboru Kubodera | 1998-10-20 |