Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11969695 | Porous body and process for manufacturing same | Toshihiko Soyama, Tsuguyuki Saito, Akira Isogai | 2024-04-30 |
| 10556197 | Method for manufacturing filter medium for air filter | Akira Isogai, Tsuguyuki Saito | 2020-02-11 |
| 10443167 | Method for producing a wet-laid nonwoven fabric | Toshihiko Soyama, Nobuyuki Sakadume | 2019-10-15 |
| 9889411 | Nonwoven fabric for semipermeable membrane support | Toshihiko Soyama, Hisashi Hamabe | 2018-02-13 |
| 9656196 | Filter material for air filter, method for manufacturing same, and air filter provided with same | Masashi Sato, Hiroyuki Yamamoto, Eiko Meguro, Toshihiko Soyama | 2017-05-23 |
| 9328211 | Porous cellulose body and method for producing same | Toshihiko Soyama, Akira Isogai, Tsuguyuki Saito | 2016-05-03 |