Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12152093 | Tetrafluoroethylene polymer, air filter medium, filter pack, and air filter unit | Emi Kiritani, Kunihiko Inui | 2024-11-26 |
| 10537836 | Filter medium for air filter, filter pack, air filter unit and method for producing the filter medium for air filter | Tatsumi Sakano, Kunihiko Inui, Yoshiyuki Shibuya | 2020-01-21 |
| 10265654 | Filtering medium for air filter, filter pack, air filter unit, and method for producing filtering medium for air filter | Yoshiyuki Shibuya, Kunihiko Inui, Li Bao, Shinichi Chaen, Seigo Yamamoto +2 more | 2019-04-23 |
| 10265661 | Mixed powder and material for molding having PTFE as main component, and drawn porous body | Shinichi Chaen, Kunihiko Inui, Taku Yamanaka, Li Bao, Yoshiyuki Shibuya +4 more | 2019-04-23 |
| 9707504 | Composition having PTFE as main component, mixed powder, material for molding, filtering medium for filter, air filter unit, and a method for manufacturing a porous membrane | Shinichi Chaen, Kunihiko Inui, Taku Yamanaka, Li Bao, Yoshiyuki Shibuya +4 more | 2017-07-18 |
| 7387700 | Method for preparing filtering material | Osamu Tanaka, Kunihiko Inui, Yoshiyuki Shibuya | 2008-06-17 |
| 7097682 | Ventilation filter medium for container, and container and container cap equipped with ventilation filter medium | Osamu Tanaka, Hideki Aomi, Yoshiyuki Shibuya, Seiichi Hirano | 2006-08-29 |
| 6682576 | Air filter medium, process of producing filter medium, air filter pack for air filters, and air filter unit for air filters | Osamu Inoue, Kunihiko Inui, Yoshiyuki Shibuya, Osamu Tanaka | 2004-01-27 |
| 6416562 | Air filter medium, air filter pack and air filter unit comprising the same, and method for producing air filter medium | Yoshiyuki Shibuya, Kunihiko Inui, Osamu Tanaka | 2002-07-09 |