Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4462863 | Microwave plasma etching | Shigeru Nishimatsu, Keizo Suzuki, Ken Ninomiya, Ichiro Kanomata, Sadayuki Okudaira | 1984-07-31 |
| 4436581 | Uniform etching of silicon (doped and undoped) utilizing ions | Sadayuki Okudaira, Yoshio Sakai, Shigeru Nishimatsu, Keizo Suzuki | 1984-03-13 |