Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828611 | High hardness sintered compact and process for producing the same | Tetsuo Nakai, Keizo Asai, Yoshiaki Kumazawa | 1989-05-09 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828611 | High hardness sintered compact and process for producing the same | Tetsuo Nakai, Keizo Asai, Yoshiaki Kumazawa | 1989-05-09 |