Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5569984 | Method and controller for detecting arc instabilities in gas discharge lamps | — | 1996-10-29 |
| 5511057 | Multiplane information storage system with an improved record carrier | Derk Visser | 1996-04-23 |
| 5479392 | Phase change record carries having crystalline nuclei and/or which produce crystallization structures when information is written thereon enabling that information to be more easily erased | James Coombs, Wilma Van Es-Spiekman | 1995-12-26 |
| 5419937 | Optical record carrier | James Coombs, Wilma Van Es Spiekman | 1995-05-30 |
| 5408453 | Method of and apparatus for optically writing, reading and erasing a multi-plane record carrier, and record carrier suitable for said method and apparatus | Derk Visser | 1995-04-18 |
| 5383172 | Information storage system and device for improved erasing of information written on a record carrier | James Coombs, Wilma Van Es-Spiekman | 1995-01-17 |
| 5153873 | Optical record carrier and method and apparatus for increasing the resolution of information recorded thereon and read therefrom | Johannes H. M. Spruit, Gijsbertus Bouwhuis, Cornelis M. J. Van Uijen | 1992-10-06 |