Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6635991 | Method of adjusting the light spectrum of a gas discharge lamp, gas discharge lamp, and luminaire for said lamp | Levinus Pieter Bakker | 2003-10-21 |
| 5120568 | Method for plasma surface treating and preparation of membrane layers | Hubertus J. A. Schuurmans, Jan Werner, Daniel C. Schram | 1992-06-09 |
| 4957062 | Apparatus for plasma surface treating and preparation of membrane layers | Hubertus J. A. Schuurmans, Jan Werner, Daniel C. Schram | 1990-09-18 |
| 4871580 | Method of treating surfaces of substrates with the aid of a plasma | Daniel C. Schram | 1989-10-03 |