Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12152093 | Tetrafluoroethylene polymer, air filter medium, filter pack, and air filter unit | Emi Kiritani, Hideyuki Kiyotani | 2024-11-26 |
| 11426690 | Air filter medium | Satoshi Hara, Tatsumi Sakano | 2022-08-30 |
| 10688448 | Porous body, polymer electrolyte membrane, filter material for filter, and filter unit | Shinichi Chaen, Taku Yamanaka, Kohei Yasuda, Masahiko Yamada, Nobuki Uraoka +3 more | 2020-06-23 |
| 10537836 | Filter medium for air filter, filter pack, air filter unit and method for producing the filter medium for air filter | Tatsumi Sakano, Yoshiyuki Shibuya, Hideyuki Kiyotani | 2020-01-21 |
| 10406471 | Filter medium for air filter, filter pack, air filter unit, and method for producing filter medium for air filter | Tatsumi Sakano, Yoshiyuki Shibuya | 2019-09-10 |
| 10265654 | Filtering medium for air filter, filter pack, air filter unit, and method for producing filtering medium for air filter | Yoshiyuki Shibuya, Hideyuki Kiyotani, 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, Hideyuki Kiyotani, Taku Yamanaka, Li Bao, Yoshiyuki Shibuya +4 more | 2019-04-23 |
| 10245545 | Embossed air filter filtration medium, filter pack, air filter unit, and method for manufacturing filtration medium for embossed air filter | Satoshi Hara, Li Bao, Makoto Kobayashi, Hitoshi Niinuma | 2019-04-02 |
| 10226730 | Filter medium for air filter, filter pack, air filter unit, and method for producing filter medium for air filter | Tatsumi Sakano, Yoshiyuki Shibuya | 2019-03-12 |
| 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, Hideyuki Kiyotani, Taku Yamanaka, Li Bao, Yoshiyuki Shibuya +4 more | 2017-07-18 |
| 9072993 | Filter medium equipped with porous film, method of manufacturing same, filter pack, and filter unit | Yoshiyuki Shibuya, Shunji Kasai, Taku Yamanaka | 2015-07-07 |
| 8937132 | Polytetrafluoroethylene mixture | Yasuhiko Sawada, Shunji Kasai, Taku Yamanaka, Yoshiyuki Shibuya, Shinichi Chaen | 2015-01-20 |
| 8865839 | Polytetrafluoroethylene mixture | Yasuhiko Sawada, Shunji Kasai, Taku Yamanaka, Makoto Ono, Yoshiyuki Shibuya +1 more | 2014-10-21 |
| 7387700 | Method for preparing filtering material | Osamu Tanaka, Yoshiyuki Shibuya, Hideyuki Kiyotani | 2008-06-17 |
| 6682576 | Air filter medium, process of producing filter medium, air filter pack for air filters, and air filter unit for air filters | Hideyuki Kiyotani, Osamu Inoue, 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, Hideyuki Kiyotani, Osamu Tanaka | 2002-07-09 |