Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6340762 | Method for optical resolution of piperidine carboxylic acid derivative | Isao Hashiba, Masami Kozawa | 2002-01-22 |
| 5919806 | Medicines for cardiac insufficiency | Hiroo Matsumoto, Yoshimasa Kamikawaji, Kazuhiko Ohrai, Toru Yamashita, Yukinori Masuda | 1999-07-06 |
| 5508403 | Phosphorus pyridine compound | Shin-ichi Akiyama, Ryozo Sakoda, Norimasa Shudo | 1996-04-16 |
| 5319089 | Process for the optical resolution of pyranobenzoxadiazole compounds | Hiroo Matsumoto, Ryozo Sakoda | 1994-06-07 |
| 5304550 | Drug effect-enhancing agent for antitumor drug | Shin-ichi Akiyama, Ryozo Sakoda, Norimasa Shudo | 1994-04-19 |
| 5272271 | Pyranobenzoxadiazole derivatives | Hiroo Matsumoto, Yoshimasa Kamikawaji, Kazuhiko Ohrai, Keisuke Ohdoi, Ryozo Sakoda +1 more | 1993-12-21 |
| 5177237 | Hydrazine derivatives useful as intermediates in the synthesis of hypotensive agents | Hiroo Matsumoto, Ryozo Sakoda | 1993-01-05 |
| 5130303 | Drug effect-enhancing agent for antitumor drug | Shin-ichi Akiyama, Ryozo Sakoda, Norimasa Shudo | 1992-07-14 |
| 5097037 | Process for the optical resolution of pyranobenzoxadiazole compounds | Hiroo Matsumoto, Ryozo Sakoda | 1992-03-17 |
| 4900752 | Pyranobenzoxadiazole derivatives | Hiroo Matsumoto, Yoshimasa Kamikawaji, Kazuhiko Ohrai, Kyoko Nakayama, Ryozo Sakoda +1 more | 1990-02-13 |
| 4885284 | Dihydropyridine-5-phosphonic acid cyclic propylene ester | Sakuya Tanaka, Ryozo Sakoda | 1989-12-05 |
| 4879400 | Process for producing alpha-(benzylidene)acetonylphosphonates | Hiroo Matsumoto, Ryozo Sakoda | 1989-11-07 |
| 4843076 | Dihydropyridine-5-phosphonic acid cyclic ester | Ryozo Sakoda, Hiroo Matsumoto, Yoshimasa Kamikawaji, Sakuya Tanaka | 1989-06-27 |
| 4839361 | Dihydropyridine-5-phosphonic acid cyclic propylene ester | Sakuya Tanaka, Ryozo Sakoda | 1989-06-13 |
| 4576934 | Antihypertensive dihydropyridine-5-phosphonic acid cyclic esters | Sakuya Tanaka, Ryozo Sakoda | 1986-03-18 |