Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12427459 | Air filter medium, air filter pack, and air filter unit | Takashi Kimura, Satoshi Hara | 2025-09-30 |
| 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, Kunihiko Inui, 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, Kunihiko Inui | 2019-09-10 |
| 10265654 | Filtering medium for air filter, filter pack, air filter unit, and method for producing filtering medium for air filter | Hideyuki Kiyotani, 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, Hideyuki Kiyotani, Kunihiko Inui, Taku Yamanaka, Li Bao +4 more | 2019-04-23 |
| 10226730 | Filter medium for air filter, filter pack, air filter unit, and method for producing filter medium for air filter | Tatsumi Sakano, Kunihiko Inui | 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, Kunihiko Inui, Taku Yamanaka, Li Bao +4 more | 2017-07-18 |
| 9072993 | Filter medium equipped with porous film, method of manufacturing same, filter pack, and filter unit | Kunihiko Inui, Shunji Kasai, Taku Yamanaka | 2015-07-07 |
| 8937132 | Polytetrafluoroethylene mixture | Yasuhiko Sawada, Shunji Kasai, Taku Yamanaka, Kunihiko Inui, Shinichi Chaen | 2015-01-20 |
| 8865839 | Polytetrafluoroethylene mixture | Yasuhiko Sawada, Shunji Kasai, Taku Yamanaka, Makoto Ono, Kunihiko Inui +1 more | 2014-10-21 |
| 7387700 | Method for preparing filtering material | Osamu Tanaka, Kunihiko Inui, Hideyuki Kiyotani | 2008-06-17 |
| 7097682 | Ventilation filter medium for container, and container and container cap equipped with ventilation filter medium | Osamu Tanaka, Hideki Aomi, Hideyuki Kiyotani, 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 | Hideyuki Kiyotani, Osamu Inoue, Kunihiko Inui, 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 | Kunihiko Inui, Hideyuki Kiyotani, Osamu Tanaka | 2002-07-09 |
| 6261979 | Filter medium and air filter unit using the same | Osamu Tanaka, Toshio Kusumi, Takeshi Tano | 2001-07-17 |
| 5660927 | Acicular metal iron fine particles, process for preparing same, magnetic coating composition and magnetic recording medium containing same | Takuya Arase, Ikuo Kitamura, Shigeo Daimon | 1997-08-26 |
| 5552072 | Coated acicular fine particulate materials, processes for preparing same and use thereof | Takuya Arase, Fumihiro Kamiya, Masayuki Tsuji, Tadashi Ino, Ikuo Kitamura +1 more | 1996-09-03 |
| 5437805 | Particles containing iron carbide | Takuya Arase, Shigeo Daimon | 1995-08-01 |
| 5346758 | Magnetic coating composition and magnetic recording medium | Shigeo Daimon, Kazuo Okamura | 1994-09-13 |
| 5205950 | Process for preparing iron carbide fine particles | Naoki Miyamoto, Shigeo Daimon | 1993-04-27 |
| 5151206 | Acicular iron carbide particulate material and process for producing same | Kazuo Okamura, Ikuo Kitamura, Hideki Aomi, Satoshi Koyama, Katsushi Tokunaga +1 more | 1992-09-29 |
| 5104561 | Process for preparing carbide fine particles | Ikuo Kitamura, Takashi Shibanuma, Shigeo Daimon | 1992-04-14 |
| 4900464 | Particles containing iron carbide | Takuya Arase, Shigeo Daimon | 1990-02-13 |
| 4842759 | Acicular process for producing particulate material | Kazuo Okamura, Ikuo Kitamura, Hideki Aomi, Satoshi Koyama, Katsushi Tokunaga +1 more | 1989-06-27 |