Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886571 | Surface treatment and apparatus therefor | Susumu Hiraoka, Shigeru Nishimatsu | 1989-12-12 |
| 4844767 | Method of and apparatus for etching | Sadayuki Okudaira, Shigeru Nishimatsi, Ken Ninomiya | 1989-07-04 |
| 4828874 | Laser surface treatment method and apparatus for practicing same | Susumu Hiraoka, Shigeru Nishimatsu | 1989-05-09 |