Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6631907 | Nitride-plated piston ring for internal combustion engines | Katsuaki Ogawa, Kazuo Shimizu | 2003-10-14 |
| 6315840 | Sliding member | Katsuaki Ogawa, Keiichi Kanemitsu | 2001-11-13 |
| 6296951 | Laminated chromium plating layers having superior wear resistance and fatigue strength | Yukio Tateishi, Katsuaki Ogawa, Kazuo Shimizu | 2001-10-02 |
| 6270081 | Combination of piston ring for use in internal combustion engine | Takao Sakai | 2001-08-07 |
| 6139984 | Sliding member | Katsuaki Ogawa, Keiichi Kanemitsu | 2000-10-31 |
| 5552030 | Method of making a magnetic material in the form of a multilayer film by plating | Kazuo Shimizu, Takeji Tsuchiya, Tohru Watanabe | 1996-09-03 |
| 5531195 | Piston ring | Takeshi Tsuchiya, Etsuo Tamegai, Katsuaki Ogawa, Makoto Murata | 1996-07-02 |
| 5124007 | Composite plating bath | Takeji Tsuchiya, Katsuaki Ogawa | 1992-06-23 |
| 5104132 | Piston ring having nitriding layer and composite Ni-B plating layer | Takeji Tsuchiya | 1992-04-14 |