Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883535 | Novel hydraulic composition | Tetsuo Hamaguchi, Tadao Natsuume | 1989-11-28 |
| 4797274 | Composition comprising copper compound | Yoshiaki Miki | 1989-01-10 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883535 | Novel hydraulic composition | Tetsuo Hamaguchi, Tadao Natsuume | 1989-11-28 |
| 4797274 | Composition comprising copper compound | Yoshiaki Miki | 1989-01-10 |