Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5157878 | Polishing method with error correction | Toyohiko Hiyoshi, Kazuo Watanabe, Shinkichi Ohkawa, Masanori Suzuki | 1992-10-27 |
| 5066131 | Stage mechanism | Takao Kariya, Masaru Ohtsuka | 1991-11-19 |
| 4993190 | Polishing apparatus | Toyohiko Hiyoshi, Kazuo Watanabe, Shinkichi Ohkawa, Masanori Suzuki | 1991-02-19 |