Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6013307 | Method of producing forgery-proof colored printed articles | Hanspeter Hauser, Abul Iqbal, Pierre Maurer | 2000-01-11 |
| 5003500 | Process and apparatus for the preparation of color formulations utilizing polarized light in spectrophotometry | — | 1991-03-26 |
| 4209078 | Adjustable ladder leveling device | — | 1980-06-24 |