Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4943608 | Rosin emulsion sizing agent | Tsuyoshi Ikeda, Yoshiharu Yamaguchi | 1990-07-24 |
| 4681909 | Rosin emulsion sizing agent | Koji Ohta, Masaaki Yoshimura | 1987-07-21 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4943608 | Rosin emulsion sizing agent | Tsuyoshi Ikeda, Yoshiharu Yamaguchi | 1990-07-24 |
| 4681909 | Rosin emulsion sizing agent | Koji Ohta, Masaaki Yoshimura | 1987-07-21 |