Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5698029 | Vertical furnace for the growth of single crystals | Katsuhiro Uehara, Yoshihiko Sakashita, Hiroshi Okada, Takao Kawanaka | 1997-12-16 |
| 5685907 | Apparatus for preparing compound single crystals | Katsuhiro Uehara, Yoshihiko Sakashita, Kazuya Suzuki, Hiroshi Okada, Takao Kawanaka +1 more | 1997-11-11 |
| 5665291 | Method for producing high density sintered silicon nitride(Si.sub.3 N.sub.4 ) | Katuhiko Honma, Tsuneo Tatsuno, Hiroshi Okada, Masato Moritoki | 1997-09-09 |
| 5603876 | Method for producing high density sintered silicon nitride (SI.sub.3 N.sub. 4 | Katuhiko Honma, Tsuneo Tatsuno, Hiroshi Okada, Masato Moritoki | 1997-02-18 |