Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4290972 | Process for the production of 4-aminobutyric acid or its derivatives | Toshio Yoneta, Seiji Shibahara, Shigeo Seki | 1981-09-22 |
| 4225706 | Polychalcogen ester of cephem compound, process for preparing the same and method for removing the protective group of the same | Shigeo Seki, Ken Nishihata, Satoru Nakabayashi, Toshinori Saito, Hitoshi Ikeda +2 more | 1980-09-30 |
| 4195170 | 3',4'-Episulfido kanamycin B compounds | Hamao Umezawa, Sumio Umezawa, Shigeo Seki, Shuntaro Yasuda | 1980-03-25 |
| 4188480 | "Process for the production of a 9,3""-di-acyl derivative of a macrolide antibiotic" | Takeshi Nakamura, Satoru Nakabayashi, Shigeo Seki | 1980-02-12 |