Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7518137 | Shield material | Kenji Okamura, Masahiro Yamauchi, Shigeru Matsuo | 2009-04-14 |
| 6551954 | WC-base composite ceramic sintered compact | Mitsuyoshi Nagano, Norimitsu Mukae, Kouki Minamoto, Toyoshige Sasaki | 2003-04-22 |
| 6279443 | Die cut roll | Kenji Nakahara, Koichi Ibusuki, Shouji Eguchi, Kohei Kitahara, Kei Tokumoto | 2001-08-28 |
| 5545248 | Titanium-base hard sintered alloy | Kei Tokumoto, Tetsunori Kitada, Hironobu Shinoaki | 1996-08-13 |
| 4478871 | Method for hardfacing a ferrous base material | Masaharu Shiroyama, Hiroshi Ito | 1984-10-23 |
| 4280841 | Method for manufacturing a mechanical seal ring | Hiroshi Ito | 1981-07-28 |