Issued Patents All Time
Showing 51–65 of 65 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4985590 | Optically active benzene derivatives and process for preparation thereof | Takayuki Higashi | 1991-01-15 |
| 4970345 | Process for preparing oxocyclopentene derivatives | — | 1990-11-13 |
| 4957867 | Production of cyclopentenones by enzyme resolution | Yuji Ueda, Takayuki Higashii, Michitada; Kondo, Seiichi Kai | 1990-09-18 |
| 4812585 | Process for producing 2-aceylfuran derivatives | Michitada Kondo, Seiichi Kai, Takayuki Higashii, Yuji Ueda | 1989-03-14 |
| 4729953 | Optically active 4-hydroxy-2-cyclopentenones, and their production | Tadashi Katsura | 1988-03-08 |
| 4714782 | Process for preparing optically active 4-hydroxy-2-cyclopentenones | Yuji Ueda | 1987-12-22 |
| 4683323 | Method for inversion of optically active 4-hydroxy-2-cyclopentenones | Yuji Ueda | 1987-07-28 |
| 4665174 | Production of cyclopentenone derivatives | Tadashi Katsura | 1987-05-12 |
| 4608442 | Process for preparing 4-hydroxy-2-cyclopentenones | Tadashi Katsura | 1986-08-26 |
| 4542235 | Method for producing an optically active 2,2-dimethylcyclopropanecarboxylic acid | Tadashi Katsura, Kazuhiko Hamada, Gohfu Suzukamo | 1985-09-17 |
| 4540825 | Method for producing 2-cyclopentenones | Katsuyuki Shiota, Kunihiko Tanaka | 1985-09-10 |
| 4535182 | Process for preparing 2-cyclopentenone esters | Tadashi Katsura | 1985-08-13 |
| 4511655 | Process for producing 4-cyclopentenones | Tadashi Katsura | 1985-04-16 |
| 4496767 | Process for preparing 2-cyclopentenone derivatives | Tadashi Katsura | 1985-01-29 |
| 4335263 | Process for preparing aromatic aldehydes | — | 1982-06-15 |