Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889721 | Sustained-release percutaneous preparations | Sotoo Asakura, Yoshio Murakami, Toshiomi Nakate | 1989-12-26 |
| 4871549 | Time-controlled explosion systems and processes for preparing the same | Takehisa Hata, Hisami Yamaguchi, Satoshi Ueda, Masateru Kodani | 1989-10-03 |
| 4837995 | Anchoring device for a tension member of prestressed concrete | Hitoshi Omizono, Hiroshi Sasaki, Yasuo Fukatsu, Saburo Ota | 1989-06-13 |