Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4836105 | Direct negative and offset master production using thermal liftoff | Jan-Pieter Hoekstra, Keith S. Pennington | 1989-06-06 |
| 4800397 | Metal transfer to form printing master plate or printed circuit board | Ali Afzali-Ardakani, Mukesh Desai, Jan-Pieter Hoekstra, Keith S. Pennington | 1989-01-24 |