Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851254 | Method and device for forming diamond film | Minoru Yamamoto, Hiroshi Uesugi, Tadashi Hattori | 1989-07-25 |
| 4814581 | Electrically insulating ceramic sintered body | Naochika Nunogaki, Tetsuo Toyama, Kazuhiro Inoguchi | 1989-03-21 |