Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11147156 | Composite member, heat radiation member, semiconductor device, and method of manufacturing composite member | Isao Iwayama, Shigeki Koyama, Masashi Okamoto, Yuta Inoue, Hiroyuki Kontani | 2021-10-12 |
| 5599493 | Method of producing silicon nitride ceramic component | Yasushi Ito, Takao Nishioka, Akira Yamakawa, Osamu Komura | 1997-02-04 |
| 5582215 | Ceramic die for cutting and shaping lead frames and method of cleaning the same | Takao Nishioka, Akira Yamakawa, Matsuo Higuchi | 1996-12-10 |
| 5564966 | Grind-machining method of ceramic materials | Takao Nishioka, Yasushi Ito, Akira Yamakawa | 1996-10-15 |
| 5502011 | Silicon nitride sintered body | Takao Nishioka, Kenji Matsunuma, Akira Yamakawa | 1996-03-26 |
| 5424256 | Silicon nitride sintered body | Masashi Yoshimura, Shinichi Yamagata, Jin-Joo Matsui, Akira Yamakawa | 1995-06-13 |
| 5369065 | Silicon nitride sintered body and process for producing the same | Masashi Yoshimura, Jin-Joo Matsui, Akira Yamakawa | 1994-11-29 |
| 5358797 | Adjusting shim | Kenji Matsunuma, Takao Nishioka, Akira Yamakawa | 1994-10-25 |
| 5346869 | Sintered silicon nitride bodies suitable for use as high impact materials | Takao Nishioka, Kenji Matsunuma, Akira Yamakawa, Masaya Miyake | 1994-09-13 |
| 5275772 | Silicon nitride sintered body and process for producing the same | Takao Nishioka, Kenji Matsunuma, Akira Yamakawa, Masaya Miyake | 1994-01-04 |
| 5275986 | Silicon nitride sintered body | Takao Nishioka, Tomoyuki Awazu, Akira Yamakawa | 1994-01-04 |
| 5204297 | Silicon nitride sintered body and process for producing the same | Takao Nishioka, Kenji Matsunuma, Akira Yamakawa, Masaya Miyake | 1993-04-20 |
| 5173458 | Silicon nitride sintered body and process for producing the same | Takao Nishioka, Kenji Matsunuma, Koichi Sogabe, Tomoyuki Awatsu, Masaya Miyake +1 more | 1992-12-22 |