Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870632 | Optical head with astigmatic reflecting element | Teruhiro Shiono, Osamu Yamazaki | 1989-09-26 |
| 4859908 | Plasma processing apparatus for large area ion irradiation | Akihisa Yoshida, Takashi Hirao | 1989-08-22 |
| 4796982 | Optical valve | Makoto Kitabatake, Kiyotaka Wasa | 1989-01-10 |