Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9528606 | Combined oil ring | Hideshi Hitosugi, Kenji Arai | 2016-12-27 |
| 7044472 | Combined steel oil control ring | Akira Takahashi | 2006-05-16 |
| 6730711 | Method for production of porous cross-linked polymer material | Masazumi Sasabe, Kenji Kadonaga, Hiroki Inoue, Akiko Mitsuhashi, Hirotama Fujimaru +2 more | 2004-05-04 |
| 6649665 | Method for production of porous cross-linked polymer material | Kenji Kadonaga, Akiko Mitsuhashi | 2003-11-18 |
| 6395793 | Method for production of porous material | Kenji Kadonaga, Akiko Mitsuhashi, Hirotama Fujimaru, Masazumi Sasabe, Masuji Izubayashi | 2002-05-28 |
| 6362243 | Method for production of porous cross-linked polymer | Masazumi Sasabe, Katsuhiko Sakamoto, Hiroshi Yamazaki, Koichi Yonemura, Kenji Kadonaga +3 more | 2002-03-26 |
| 6323250 | Method for production of porous material | Kenji Kadonaga, Akiko Mitsuhashi, Hirotama Fujimaru, Masazumi Sasabe, Masuji Izubayashi | 2001-11-27 |
| 6166097 | Method for production of porous material | Koichi Yonemura, Hirotama Fujimaru, Naoko Ikushima | 2000-12-26 |
| 5484841 | Method for production of aqueous dispersion of long-chain alkyl graft polymer and aqueous release agent | Kazuo Kodama, Toru Tsuda | 1996-01-16 |
| 5284909 | Amphoteric polyelectrolyte, method for production thereof, and organic sludge dehydrater | Koichi Yamamoto, Kazuo Kodama, Seiichi Suzuki, Takashi Tazaki, Yutaka Morimoto +1 more | 1994-02-08 |
| 5252184 | Additive for production of paper | Yasumasa Tanaka, Koichi Yamamoto | 1993-10-12 |
| 5194515 | Amphoteric polyelectrolite, method for production thereof, and organic sludge dehydrater | Koichi Yamamoto, Kazuo Kodama, Seiichi Suzuki, Takashi Tazaki, Yutaka Morimoto +1 more | 1993-03-16 |
| 4865363 | Pipe connection device for scientific equipment | — | 1989-09-12 |
| 4806577 | Adhesive composition | Kazuo Kodama, Minoru Saotome | 1989-02-21 |
| 4772487 | Method and apparatus of forming solid phase reagent in micro-module | Yutaka Gotoh, Masao Agawa, Kiyoshi TAKAO, Katsuaki Takano | 1988-09-20 |