Issued Patents All Time
Showing 26–37 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4996169 | Semiconductor laser assembly | — | 1991-02-26 |
| 4970710 | Method and apparatus for focus and tracking in an optical disk system | — | 1990-11-13 |
| 4918675 | Magneto-optical head with separate optical paths for error and data detection | — | 1990-04-17 |
| 4906839 | Hybrid surface emitting laser and detector | — | 1990-03-06 |
| 4905216 | Method for constructing an optical head by varying a hologram pattern | — | 1990-02-27 |
| 4834485 | Integrated fiber optics transmitter/receiver device | — | 1989-05-30 |
| 4794585 | Optical head having a hologram lens and polarizers for use with magneto-optic medium | — | 1988-12-27 |
| 4789977 | Optical data recording device | Adrianus H. Oudenhuysen | 1988-12-06 |
| 4757197 | Semiconductor laser and detector device | — | 1988-07-12 |
| 4731772 | Optical head using hologram lens for both beam splitting and focus error detection functions | — | 1988-03-15 |
| 4707137 | Device and method for testing the wave front quality of optical components | — | 1987-11-17 |
| 4508808 | Method of using diazotype photographic materials with preexposure treatment to form uniform sites of refractive index change | Paul H. Voisin | 1985-04-02 |