Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4716687 | Method and apparatus for grinding a rotary body | Hidehiko Tsukamoto, Kanji Hayashi, Tsunetaka Sumomogi, Masashi Oya, Junichi Ibushi +6 more | 1988-01-05 |
| 4671017 | Method and apparatus for grinding a rotary body | Kazuo Ideue, Masashi Oya, Kanji Hayashi, Tsuneo Egawa, Hiroaki Shimazutsu +3 more | 1987-06-09 |