Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6306647 | Process for producing and purifying 2',3'-dideoxynucleosides, and process for producing 2',3'-dideoxy-2',3'-didehydronucleosides | Yasuo Irie, Naohiko Yasuda | 2001-10-23 |
| 6252075 | Process for producing purine derivatives | Kunisuke Izawa, Keizo Yamashita, Satoshi Katayama | 2001-06-26 |
| 6245910 | Process for producing purine derivatives | Kunisuke Izawa, Keizo Yamashita | 2001-06-12 |
| 6087497 | Process for producing purine derivatives | Kunisuke Izawa, Keizo Yamashita | 2000-07-11 |
| 5942617 | Process for producing purine derivatives | Yumiko Uchida, Kunisuke Izawa, Keizo Yamashita, Satoshi Katayama | 1999-08-24 |
| 5831092 | Process for producing purine derivatives | Kunisuke Izawa, Keizo Yamashita | 1998-11-03 |
| 5792868 | Process for producing acyclic nucleosides and process for separating purine nucleosides | Kunisuke Izawa, Yoshihito Koguchi | 1998-08-11 |
| 5688948 | Process for isomerizing acyclic nucleosides and process for separating purine nucleosides | Kunisuke Izawa, Yoshihito Koguchi, Yumiko Uchida, Satoshi Takamatsu | 1997-11-18 |
| 5633366 | Pyrimidine nucleoside derivatives and methods for producing them | Satoshi Takamatsu, Yumiko Uchida, Kunisuke Izawa | 1997-05-27 |
| 5625057 | Process for preparing 2',3'-Dideoxy-2',3'-dehydronucleosides | Yumiko Uchida, Kunisuke Izawa | 1997-04-29 |
| 5466793 | Process for preparing 2', 3'- dideoxyinosine | Yutaka Honda, Hisao Iwagami, Masayuki Arai | 1995-11-14 |
| 5451671 | Method of purifying 2',3'-dideoxynucleosides | Masayuki Arai, Kunisuke Izawa, Yutaka Honda, Yasuhiro Tanaka, Toshihide Yukawa +1 more | 1995-09-19 |
| 5336770 | Transglycosilation process for producing acyclic nucleosides | Yoshihito Koguchi, Kunisuke Izawa | 1994-08-09 |
| 5310895 | Method for production of nucleoside derivatives by selective hydrolysis | Yasuhiro Tanaka, Hisao Iwagami | 1994-05-10 |
| 5290927 | Process for preparing 2',3'-dideoxyadenosine | Yutaka Honda, Hisao Iwagami, Masayuki Arai | 1994-03-01 |
| 4970148 | Method of producing 2',3'-dideoxyinosine | Kenzo Yokozeki, Hideyuki Shirae, Katsunori Kobayashi, Yasuo Irie | 1990-11-13 |
| 4962193 | Process for purifying 2',3'-dideoxynucleosides | Kenzo Yokozeki, Hideyuki Shirae, Yasuo Irie, Naohiko Yasuda, Masaru Otani +1 more | 1990-10-09 |
| 4835104 | Process for producing and purifying 2',3'-dideoxynucleosides, and process for producing 2',3'-dideoxy-2',3'-didehydronucleosides | Kenzo Yokozeki, Hideyuki Shirae, Yasuo Irie, Naohiko Yasuda, Masaru Otani +1 more | 1989-05-30 |