Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9656196 | Filter material for air filter, method for manufacturing same, and air filter provided with same | Masashi Sato, Hiroyuki Yamamoto, Junji Nemoto, Toshihiko Soyama | 2017-05-23 |
| 8662316 | Filter medium for liquid filtration and process for producing the same | Nobuyuki Sakadume, Toshihiko Soyama | 2014-03-04 |
| 7520912 | Air purifying filter media and process for producing the same | Nobuyuki Sakadume, Toshihiko Soyama, Kazuro Isomae, Mikiko Gokano | 2009-04-21 |