Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7128861 | Method for producing hollow yarn film | Tetsuo Shimizu | 2006-10-31 |
| 7083726 | Hollow thread film cartridge, hollow thread film module using the cartridge, and tank type filter | Akihiro Watanabe, Yuzuru Ishibashi | 2006-08-01 |
| 5143612 | Hollow fiber filter module | Yoshio Kanda | 1992-09-01 |
| 4563536 | Method for synthesizing trioxane | Koichi Yoshida, Toshiyuki Iwaisako, Junzo Masamoto, Hajime Komaki | 1986-01-07 |
| 4381397 | Method for synthesizing trioxane | Koichi Yoshida, Toshiyuki Iwaisako, Junzo Masamoto, Hajime Komaki | 1983-04-26 |
| 4332644 | Process for separating trioxane | Toshiyuki Iwaisako, Junzo Masamoto, Koichi Yoshida | 1982-06-01 |