Issued Patents All Time
Showing 26–50 of 100 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5756411 | Sintered body of silicon nitride and method of producing the same | Seiji Nakahata, Hisao Takeuchi | 1998-05-26 |
| 5750449 | Ceramic porous bodies and method of producing the same | Koichi Niihara | 1998-05-12 |
| 5720917 | Manufacturing method for silicon nitride-based sintered body | Takashi Matsuura, Takao Nishioka | 1998-02-24 |
| 5716670 | Silicon nitride powder and method for producing the same | Jin-Joo Park, Atsushi Kimura, Koji Yamaguchi | 1998-02-10 |
| 5698156 | Method of producing a silicon nitride based sintered body | Takashi Matsuura, Hasaya Miyake | 1997-12-16 |
| 5696042 | Ceramic porous body and method for preparing the same | Takahiro Matsuura, Chihiro Kawai | 1997-12-09 |
| 5675201 | Composite bearing structure | Osamu Komura, Tetsuya Katayama, Kenji Matsunuma, Norio Yasuoka, Matsuo Higuchi +1 more | 1997-10-07 |
| 5647313 | Combination of adjusting shim and cam | Hiromu Izumida, Kaoru Murabe, Takao Nishioka, Kenji Matsunuma | 1997-07-15 |
| 5622905 | Silicon nitride based sintered body | Takashi Matsuura, Masaya Miyake | 1997-04-22 |
| 5605494 | Facility for grinding silicon nitride ceramic workpiece | Takao Nishioka, Kenji Matsunuma | 1997-02-25 |
| 5603788 | Method of manufacturing a ceramics-type vacuum vessel | Tetsuya Abe, Yoshio Murakami, Hisao Takeuchi, Masaya Miyake | 1997-02-18 |
| 5599493 | Method of producing silicon nitride ceramic component | Yasushi Ito, Takehisa Yamamoto, Takao Nishioka, Osamu Komura | 1997-02-04 |
| 5584745 | Method of machining silicon nitride ceramics and silicon nitride ceramics products | Takao Nishioka, Kenji Matsunuma | 1996-12-17 |
| 5582215 | Ceramic die for cutting and shaping lead frames and method of cleaning the same | Takehisa Yamamoto, Takao Nishioka, Matsuo Higuchi | 1996-12-10 |
| 5564966 | Grind-machining method of ceramic materials | Takao Nishioka, Takehisa Yamamoto, Yasushi Ito | 1996-10-15 |
| 5543371 | Slide member and method of manufacturing the same | Tetsuya Katayama, Kaoru Murabe, Osamu Komura, Chihiro Kawai, Kenji Matsunuma +3 more | 1996-08-06 |
| 5538927 | Silicon nitride powder and its manufacturing | Yasushi Tsuzuki, Tomoyuki Awazu | 1996-07-23 |
| 5533930 | Apparatus for producing a silicon nitride sintered body | Yasushi Tsuzuki, Shin-ichi Yamagata | 1996-07-09 |
| 5529962 | Aluminum nitride sintered body and method of producing the same | Seiji Nakahata, Takahiro Matsuura, Kouichi Sogabe | 1996-06-25 |
| 5516269 | Zirconia vane for rotary compressors | Takao Nishioka, Matsuo Higuchi, Harutoshi Ukegawa | 1996-05-14 |
| 5502011 | Silicon nitride sintered body | Takehisa Yamamoto, Takao Nishioka, Kenji Matsunuma | 1996-03-26 |
| 5482905 | Aluminum nitride sintered body and method of producing the same | Seiji Nakahata, Takahiro Matsuura, Kouichi Sogabe | 1996-01-09 |
| 5478649 | Silicon nitride powder and method for producing the same | Jin-Joo Park, Atsushi Kimura, Koji Yamaguchi | 1995-12-26 |
| 5449648 | Method for preparing an aluminum nitride sintered body | Seiji Nakahata, Takahiro Matsuura, Kouichi Sogabe | 1995-09-12 |
| 5424256 | Silicon nitride sintered body | Masashi Yoshimura, Takehisa Yamamoto, Shinichi Yamagata, Jin-Joo Matsui | 1995-06-13 |