Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4795511 | Method of manufacturing an optically readable disc record and disc record manufactured in accordance with the method | Henricus H. B. Wouters | 1989-01-03 |
| 4348610 | Camera tube with graded tellurium or arsenic target | Jan Dieleman, Petrus J. A. M. Derks | 1982-09-07 |
| 4319159 | Camera tube selenium target including arsenic increasing in concentration from radiation side | Petrus J. A. M. Derks, Jan Dieleman | 1982-03-09 |
| 4254359 | Camera tube with graduated concentration of tellurium in target | Petrus J. A. M. Derks, Jan Dieleman | 1981-03-03 |