Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7089857 | Method for copying a printing plate for humid offset printing | — | 2006-08-15 |
| 6406833 | Use of frequency-modulated screening for lightening offset printing surfaces | — | 2002-06-18 |
| 4996131 | Offset plate with thin chromium layer and method of making | — | 1991-02-26 |
| 4857436 | Offset plates with two chromium layers | — | 1989-08-15 |
| 4410620 | Offset plates in steel, using surfaces containing chromium oxide | — | 1983-10-18 |