Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7275854 | Lamp and lampholder with peripheral locking means | Nicolas Gerardus Antonius Peeters, Markus Pieper, Karl-Wilhelm Vogt | 2007-10-02 |
| 6522068 | Fluorescent lamp, and method of manufacturing same | Suzanne Van Egmond, Stephen Charles Fancher, Tommy Lee Harmon, Frank M. Latassa, Josephus Theodorus Van Der Eyden | 2003-02-18 |
| 5994831 | Low-pressure mercury discharge lamp with luminescent layer | Dick Van Der Voort, Henricus C. G. Verhaar | 1999-11-30 |
| 4868463 | Method of operating a high-pressure discharge lamp | Rudolf L. A. van der Heijden, Jan W. Denneman | 1989-09-19 |
| RE32545 | Magnetic domain logic device | Willem F. Druyvesteyn, Frederik Ate de Jonge | 1987-11-17 |
| 4527097 | High-pressure sodium discharge lamp | Rudolf L. A. van der Heijden | 1985-07-02 |