Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6143461 | Process for obtaining a color image with improved resolution | Shane Hsieh, Rusty Koenigkramer, David L. Siegfried, Wojciech A. Wilczak, Richard Zagroba | 2000-11-07 |
| 5738970 | Negative working, peel developable, single sheet color proofing system with polyvinyl acetal photoadhering layer | Shane Hsieh, Rusty Koenigkramer, Shuchen Liu, David L. Siegfried, Wojciech A. Wilczak | 1998-04-14 |
| 4948693 | Positive working color proofing system comprising polyvinyl acetal/polyvinyl alcohol/polyvinyl acetate resin | Stephan J. W. Platzer, Gabor I. Koletar | 1990-08-14 |
| 4869993 | Optical brightener containing positive working color proofing system | Wahib Farahat, Dennis J. Bellville | 1989-09-26 |
| 4772533 | Positive working naphthoquinone diazide color proofing element with polyvinyl acetate adhesive layer | Stephan J. W. Platzer, Gabor I. Koletar | 1988-09-20 |
| 4659642 | Positive working naphthoquinone diazide color proofing transfer process | Stephan J. W. Platzer, Gabor I. Koletar | 1987-04-21 |