Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6936967 | Fluorescent lamp and method of manufacturing same | Suzanne Van Egmond, Josephus Theodorus Van Der Eyden | 2005-08-30 |
| 6707246 | Low-pressure mercury vapor discharge lamp with improved auxiliary amalgam | Hindrik Hermannus Stel, Johannes Theodorus Jacobus Van Haastrecht, Jeroen Jan Wits, Ronald Arjan Van Den Brakel, Pieter Ooms +1 more | 2004-03-16 |
| 5907216 | Low-pressure mercury vapour discharge lamp | Franciscus A. S. Ligthart, Johannes T.J. Van Haastrecht, Renate Kaiser | 1999-05-25 |
| 5070273 | Low-pressure mercury vapor discharge lamp with flat discharge vessel and external side electrodes | Christianus J. Roozekrans, Markus W. M. Wanninkhof | 1991-12-03 |
| 4940923 | Electrodeless low-pressure discharge lamp | Wiggert Kroontje | 1990-07-10 |