Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11047479 | Method for producing piston ring with recess | Atsushi Chiba, Naoyuki Akimoto, Iwao Hiraishi | 2021-06-29 |
| 10514097 | Method for producing piston ring with recess | Atsushi Chiba, Naoyuki Akimoto, Iwao Hiraishi | 2019-12-24 |
| 10344860 | Highly heat conductive piston ring for internal combustion engine | Tsugane Hirase, Hiromichi Yokokawa, Junpei Ogawa, Takaaki Kondo, Tomonori Miyazawa +2 more | 2019-07-09 |
| 10330198 | Multi-piece oil ring | Atsushi Chiba, Iwao Hiraishi, Makoto Kajiwara | 2019-06-25 |
| 10030772 | Multi-piece oil ring | Atsushi Chiba, Iwao Hiraishi, Makoto Kajiwara | 2018-07-24 |
| 9506138 | Piston ring | Hiroyuki Sugiura, Atsushi Chiba, Makoto Kajiwara, Katsuaki Ogawa, Kazuhiro Sameshima | 2016-11-29 |
| 9193067 | Rotation-transmitting mechanism, conveying apparatus, and driving apparatus | Hirofumi Minami | 2015-11-24 |
| 9187797 | Steel part for machine structural use and manufacturing method thereof | Shinya Teramoto, Hiromasa Takada, Manabu Kubota, Yoichi Taniguchi, Junichi Nakatsuka +1 more | 2015-11-17 |
| 8820750 | Internal combustion engine oil ring | Atsushi Chiba, Iwao Hiraishi, Makoto Kajiwara | 2014-09-02 |
| 7591625 | Carrying mechanism, a carrying device and a vacuum processing apparatus | Hirofumi Minami | 2009-09-22 |
| 7397872 | Automatic gain control circuit and method thereof and demodulation apparatus using the same | Kenji Komori, Masataka Wakamatsu, Hideaki Sato, Takashi Usui, Kazuyuki Saijo +2 more | 2008-07-08 |
| 6891405 | Variable gain amplifier | Shinichi Tanabe | 2005-05-10 |