Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886587 | Method of producing thin film optical element by ion injection under electric field | — | 1989-12-12 |
| 4856861 | Light waveguide lens | Shigetaro Ogura, Kazuya Matsumoto | 1989-08-15 |
| 4853919 | Information processing apparatus in which a deflected light and O-order light are respectively used for information recording/reproduction and tracking, and a method therefor | Kazuya Matsumoto | 1989-08-01 |
| 4832428 | Waveguide optical system | Uuichi Handa | 1989-05-23 |
| 4823014 | Position detecting device usable with an object having a surface | — | 1989-04-18 |
| 4799750 | Optical function element and a method for manufacturing the same | — | 1989-01-24 |