Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4359022 | Valve for an internal combustion engine | Kiyoshi Nakamura, Masae Nakanishi, Syozo Kawasaki, Katsutoshi Nishida | 1982-11-16 |
| 4332909 | Silicon nitride based sintered product and method of producing the same | Katsutoshi Nishida | 1982-06-01 |