Issued Patents All Time
Showing 26–49 of 49 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6057046 | Nitrogen-containing sintered alloy containing a hard phase | Keiichi Tsuda, Kazutaka Isobe, Nobuyuki Kitagawa | 2000-05-02 |
| 6051063 | Diamond wafer and method of producing a diamond wafer | Keiichiro Tanabe, Yuichiro Seki, Naoji Fujimori, Hideaki Nakahata, Shin-ichi Shikata | 2000-04-18 |
| 5964942 | Wafer and method of producing same | Keiichiro Tanabe, Yuichiro Seki, Naoji Fujimori, Takashi Tsuno | 1999-10-12 |
| 5947651 | Indexable insert | Daisuke Murakami, Norihide Kimura, Reizo Murakami, Nobuyuki Kitagawa | 1999-09-07 |
| 5871850 | Coated hard metal material | Hideki Moriguchi, Nobuyuki Kitagawa, Katsuya Uchino | 1999-02-16 |
| 5776246 | Diamond wafer and method of producing a diamond wafer | Keiichiro Tanabe, Yuichiro Seki, Naoji Fujimori, Hideaki Nakahata, Shin-ichi Shikata | 1998-07-07 |
| 5776588 | Coated hard alloy tool | Hideki Moriguchi, Daisuke Murakami, Toshio Nomura | 1998-07-07 |
| 5759667 | Diamond wire drawing die and process for manufacturing same | Toshiya Takahashi, Keiichiro Tanabe, Naoji Fujimori | 1998-06-02 |
| 5597272 | Coated hard alloy tool | Hideki Moriguchi, Daisuke Murakami, Toshio Nomura | 1997-01-28 |
| 5587013 | Methods of synthesizing and polishing a flat diamond film and free-standing diamond film | Keiichiro Tanabe, Naoji Fujimori | 1996-12-24 |
| 5571236 | Diamond wire drawing die | Toshiya Takahashi, Keiichiro Tanabe, Noaji Fujimori | 1996-11-05 |
| 5567522 | Diamond cutting tool and method of manufacturing the same | Keiichiro Tanabe, Toshiya Takahashi, Naoji Fujimori | 1996-10-22 |
| 5539176 | Method and apparatus of synthesizing diamond in vapor phase | Naoji Fujimori | 1996-07-23 |
| 5516027 | Bonding tool having a diamond head and method of manufacturing the same | Keiichiro Tanabe, Toshiya Takahashi, Naoji Fujimori | 1996-05-14 |
| 5481081 | Method and apparatus of synthesizing diamond in vapor phaase | Naoji Fujimori | 1996-01-02 |
| 5435815 | Cutting tool employing vapor-deposited polycrystalline diamond for cutting edge and method of manufacturing the same | Keiichiro Tanabe, Toshiya Takahashi, Naoji Fujimori | 1995-07-25 |
| 5370299 | Bonding tool having diamond head and method of manufacturing the same | Keiichiro Tanabe, Toshiya Takahashi, Naoji Fujimori | 1994-12-06 |
| 5314570 | Process and apparatus for the production of diamond | Naoji Fujimori | 1994-05-24 |
| 5277942 | Insulating member and electric parts using the same | Naoji Fujimori, Tetsuo Yashiki, Tetsuya Abe, Yoshio Murakami | 1994-01-11 |
| 5197651 | Bonding tool | Tsutomu Nakamura, Katsuyuki Tanaka, Tetuso Nakai, Takahiro Imai, Naoji Fujimori | 1993-03-30 |
| 5112643 | Gaseous phase synthesized diamond and method for synthesizing same | Masaaki Tobioka | 1992-05-12 |
| 4900628 | Gaseous phase synthesized diamond and method for synthesizing same | Masaaki Tobioka | 1990-02-13 |
| 4859490 | Method for synthesizing diamond | Masaaki Tobioka | 1989-08-22 |
| 4675206 | Process for the production of a surface-coated article | Masaaki Tobioka | 1987-06-23 |