Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9899275 | Manufacturing method of semiconductor device | — | 2018-02-20 |
| 5183929 | Method for production of T-butyl 3-oxobutyrates and their use | Yukio Ishibashi, Haruo Shinbo | 1993-02-02 |
| 5162522 | Method for producing cephem compounds | Yukio Ishibashi, Toshihiko Fujitani | 1992-11-10 |
| 5109131 | Method for production of t-butyl 3-oxobutyrates and their use | Yukio Ishibashi, Haruo Shinbo | 1992-04-28 |
| 4980464 | Method for production of cephalosporin compounds | Yukio Ishibashi | 1990-12-25 |
| 4927964 | Method for production of 2-oxyimino-3-oxobutyric acids | Yukio Ishibashi, Haruo Shinbo | 1990-05-22 |
| 4908444 | Method of producing cephem compounds | Yukio Ishibashi | 1990-03-13 |
| 4845257 | 4-halogeno-2-oxyimino-3-oxobutyric acids and derivatives | Yukio Ishibashi | 1989-07-04 |
| 4801703 | Method for production of cephalosporin compounds | Masayasu Kato, Kazuo Tsukamura | 1989-01-31 |
| 4692519 | Crystals of sodium cephemcarboxylate | Kazuo Tsukamura, Sakae Aoyagi | 1987-09-08 |
| 4642365 | Method for production of 1,3,2-dioxaphospholes | Masayasu Kato, Kazuo Tsukamura | 1987-02-10 |
| 4446318 | Method for producing 7-aminocephem compounds | Haruo Shinbo, Kazuo Tsukamura | 1984-05-01 |