Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6273995 | Paper bulking promoter, highly bulky pulp sheet, and process for producing the pulp sheet | Yasushi Ikeda, Hiromichi Takahashi, Koji Hamaguchi | 2001-08-14 |
| 5801135 | Deinking composition comprising a fatty acid mixture and a nonionic surfactant | Yoshitaka Miyauchi, Koji Hamaguchi, Daisuke Shiba, Hiromichi Takahashi | 1998-09-01 |