Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4331627 | Alumina sintered products and process for their production | Kenji Sakurai, Hiroshi Tanaka | 1982-05-25 |
| 4325710 | Sintered ceramics for cutting tools and manufacturing process thereof | Hiroshi Tanaka | 1982-04-20 |