Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5036028 | High density metal boride-based ceramic sintered body | Tadahiko Watanabe, Kazuhisa Shobu, Yukio Kai | 1991-07-30 |
| 4948425 | Titanium carbo-nitride and chromium carbide-based ceramics containing metals | Tadahiko Watanabe, Osamu Yagishita, Hideki Yamamoto, Yukio Kai | 1990-08-14 |