Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888059 | Cement dispersing agent | Tokio Goto | 1989-12-19 |
| 4804709 | Fluorine-containing coating agents | Toshio Takago, Yasushi Yamamoto | 1989-02-14 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888059 | Cement dispersing agent | Tokio Goto | 1989-12-19 |
| 4804709 | Fluorine-containing coating agents | Toshio Takago, Yasushi Yamamoto | 1989-02-14 |