Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10626991 | Segment, combination oil ring, and manufacturing method for a segment | Atsushi Nakazawa, Yusuke Nishi | 2020-04-21 |
| 9784369 | Combination oil ring | Kentaro Kawano | 2017-10-10 |
| 6953939 | Testing apparatus using scanning electron microscope | Tetsuo Abe, Kouki Okawauchi, Tadashi Hattori, Minoru Takeda, Yuichi Aki +4 more | 2005-10-11 |
| 6002656 | Device for inspecting the surface of disc-shaped recording medium | Akira Miyagawa | 1999-12-14 |
| 5992255 | Control apparatus for hydraulically operated vehicular transmission | Osahide Miyamoto, Kouji Shibuya, Yoshiaki Shuto, Hiroyuki Takeo, Hiroyuki Katano | 1999-11-30 |
| 5977004 | Powder of titanium compounds | Kenji Higashi | 1999-11-02 |
| 5632827 | Aluminum alloy and process for producing the same | Fumio Nonoyama, Atsushi Danno | 1997-05-27 |
| 5494541 | Production of aluminum alloy | Fumio Nonoyama, Atsushi Danno | 1996-02-27 |
| 4909862 | Process for ion nitriding aluminum material | Hideo Tachikawa, Tohru Arai, Kazuyuki Oguri | 1990-03-20 |
| 4818351 | Method for the surface treatment of an iron or iron alloy article | Tohru Arai, Yoshihiko Sugimoto, Yukio Ohta, Shigeo Moriyama, Akira Sato | 1989-04-04 |
| 4804445 | Method for the surface treatment of an iron or iron alloy article | Yukio Ohta, Shigeo Moriyama, Akira Sato, Tohru Arai, Yoshihiko Sugimoto | 1989-02-14 |
| 4765847 | Method of treating the surface of iron alloy materials | Tohru Arai, Junji Endo, Yoshihiko Sugimoto, Yukio Ohta | 1988-08-23 |
| 4597808 | Process for ion nitriding aluminum or aluminum alloys | Hideo Tachikawa, Takatoshi Suzuki, Tohru Arai | 1986-07-01 |
| 4436559 | Process for manufacturing boride dispersion copper alloys | Tohru Arai | 1984-03-13 |
| 4436560 | Process for manufacturing boride dispersion copper alloys | Tohru Arai, Jiro Mizuno | 1984-03-13 |
| 4400224 | Method for forming a carbide layer on the surface of a ferrous alloy article or a cemented carbide article | Tohru Arai, Yasuo Takada | 1983-08-23 |
| 4230751 | Treating composition, forming a mixed-carbide layer of Va-Group elements and of chromium on a ferrous-alloy surface and resulting product | Noboru Komatsu, Tohru Arai | 1980-10-28 |