Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6057046 | Nitrogen-containing sintered alloy containing a hard phase | Keiichi Tsuda, Akihiko Ikegaya, Nobuyuki Kitagawa | 2000-05-02 |
| 5939651 | Titanium-based alloy | Nobuyuki Kitagawa, Isao Yamazaki | 1999-08-17 |
| 5577424 | Nitrogen-containing sintered hard alloy | Keiichi Tsuda, Nobuyuki Kitagawa, Toshio Nomura | 1996-11-26 |
| 5228812 | Throw-away tipped drill | Kazuo Noguchi, Yoshikatsu Mori, Nobuyuki Kitagawa, Toshio Nomura | 1993-07-20 |
| 5186739 | Cermet alloy containing nitrogen | Toshio Nomura | 1993-02-16 |
| 5154549 | Throw-away tipped drill bit | Kazuo Noguchi, Toshio Nomura | 1992-10-13 |
| 5154550 | Throw-away tipped drill bit | Kazuo Noguchi, Toshio Nomura | 1992-10-13 |
| 4971485 | Cemented carbide drill | Toshio Nomura, Nobuyuki Kitagawa | 1990-11-20 |
| 4769070 | High toughness cermet and a process for the production of the same | Masaaki Tobioka, Yasuhiro Shimizu, Nobuyuki Kitagawa, Toshio Nomura, Kunihiro Takahashi | 1988-09-06 |