Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5066645 | Epipodophyllotoxin altroside derivatives | Takeshi Ohnuma, Hideo Kamei, Takayuki Naito | 1991-11-19 |
| 4997931 | Epipodophyllotoxin glycosides | Takeshi Ohnuma | 1991-03-05 |
| 4699979 | 7-amino-3-propenylcephalosporanic acid and esters thereof | Jun Okumura, Takayuki Naito, Yoshio Abe, Shimpei Aburaki | 1987-10-13 |
| 4661590 | Substituted vinyl cephalosporins | Jun Okumura, Takayuki Naito, Yoshio Abe, Shimpei Aburaki | 1987-04-28 |
| 4619925 | 3-Propenyl cephalosporin derivatives | Takayuki Naito | 1986-10-28 |
| 4591641 | Substituted vinyl cephalosporins | Jun Okumura, Takayuki Naito, Yoshio Abe, Shimpei Aburaki | 1986-05-27 |
| 4520022 | Substituted vinyl cephalosporins | Jun Okumura, Takayuki Naito, Yoshio Abe, Shimpei Aburaki | 1985-05-28 |
| 4206116 | Novel penicillins | Takayuki Naito, Jun Okumura | 1980-06-03 |
| 4198506 | 2-Carboxyalkyl-2,3-dihydro-6-mercapto-s-triazolo[4,3-b]-pyridazin-3-ones | Takayuki Naito, Jun Okumura, Hajime Kamachi, Seiji Iimura, Masahisa Oka | 1980-04-15 |