Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828611 | High hardness sintered compact and process for producing the same | Tetsuo Nakai, Syuzi Yazu, Yoshiaki Kumazawa | 1989-05-09 |
| 4431762 | Ultraviolet light screening resin composition | Shingo Araki, Seibei Ono | 1984-02-14 |