Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866003 | Plasma vapor deposition of an improved passivation film using electron cyclotron resonance | Katsuyuki Yokoi, Toshio Fujioka | 1989-09-12 |
| 4831564 | Apparatus for estimating and displaying remainder of lifetime of xenon lamps | — | 1989-05-16 |