Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8940332 | High-molecular weight conjugate of podophyllotoxins | Masayuki Kitagawa, Keizou Ishikawa, Keiichirou Yamamoto, Masao Shibata | 2015-01-27 |
| 8808749 | Polymer conjugate of bioactive substance having hydroxy group | Masayuki Kitagawa, Chieko Seno, Keiko Ebara | 2014-08-19 |
| 8334364 | High-molecular weight derivative of nucleic acid antimetabolite | Keiichiro Yamamoto | 2012-12-18 |
| 8188222 | High molecular weight derivative of nucleic acid antimetabolite | Keiichiro Yamamoto | 2012-05-29 |
| 7700709 | Polymeric derivative of cytidine metabolic antagonist | Akira Masuda, Takeshi Onda, Hiroko Mashiba, Keiichirou Yamamoto | 2010-04-20 |