Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5807625 | Security document with reversibly photochromic printing inks | Haim Bretler, Anton Bleikolm | 1998-09-15 |
| 5630869 | Reversibly photochromic printing inks | Haim Bretler, Anton Bleikolm | 1997-05-20 |
| 5281569 | Curable desensitizing ink for the printing of self-copying sheets | Laszlo K. Boksanyi | 1994-01-25 |
| RE34389 | Security document printing ink | Anton Bleikolm, Pierre Degott, Olivier Rozumek, Haim Bretler | 1993-09-28 |
| 5035743 | Desensitizing ink for the printing of self-copying sheets | Laszlo K. Boksanyi, Pierre Degott | 1991-07-30 |
| 4966628 | Security document printing ink | Anton Bleikolm, Pierre Degott, Olivier Rozumek, Haim Bretler | 1990-10-30 |
| 4767420 | Transfer printing sheet with impregnating agents and two-component electrophotographic toner and transfer printing of textile materials of cotton | Wolfgang Mehl | 1988-08-30 |
| 4756759 | Printing ink in dry, powdered form | Haim Bretler | 1988-07-12 |
| 4664670 | Transfer printing sheet carrying impregnant and transfer printing of cellulose, wool, silk or polyamide textile materials | Wolfgang Mehl | 1987-05-12 |
| 4636223 | Heat transfer printing of natural silk substrates | Wolfgang Mehl | 1987-01-13 |
| 4599111 | Desensitizing ink for wet offset printing | Roger Weil | 1986-07-08 |
| 4597793 | Desensitizing ink for wet offset printing | Roger Weil | 1986-07-01 |
| 4287234 | Desensitizing ink for the receiving surface of a chemical duplicating set by wet offset printing | Roger Weil, Paul Heinzer | 1981-09-01 |