Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4521444 | Method of providing a metal layer on a substrate | Johannes J. Ponjee, Christiaan J. A. Verwijlen | 1985-06-04 |
| 4420506 | Method of manufacturing an article of a synthetic resin which has a metal layer | Johannes J. Ponjee, Petrus E. J. Legierse, Johannes Van Ruler | 1983-12-13 |