Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6143461 | Process for obtaining a color image with improved resolution | Rusty Koenigkramer, David L. Siegfried, Richard L. Shadrach, Wojciech A. Wilczak, Richard Zagroba | 2000-11-07 |
| 6140008 | Infrared laser imageable, peel developable, single sheet color proofing system having a crosslinked thermal transfer layer | Rusty Koenigkramer, Wojciech A. Wilczak, Gerald Smith | 2000-10-31 |
| 5738970 | Negative working, peel developable, single sheet color proofing system with polyvinyl acetal photoadhering layer | Rusty Koenigkramer, Shuchen Liu, Richard L. Shadrach, David L. Siegfried, Wojciech A. Wilczak | 1998-04-14 |
| 5436112 | Method for producing a negative image with color proofing element containing a urethane monomer | Wojciech A. Wilczak | 1995-07-25 |
| 5436106 | Process for the production of a color test image using quinone diazide photosensitive recording material | Dieter Mohr, Martin Benzing, Juergen Mertes, Guenter Hultzsch, Ine Gramm +3 more | 1995-07-25 |
| 5348833 | Colored positive-working quinone diazide photosensitive recording material for the production of a color test image utilizing adhesive layer containing alkali-insoluble organic polymer and alkali-soluble polyester | Dieter Mohr, Martin Benzing, Juergen Mertes, Guenter Hultzsch, Ine Gramm +3 more | 1994-09-20 |
| 5084372 | Process for preparing photographic elements utilizing light-sensitive layer containing cyclical acid amide thermo-crosslinking compound | Paul Stahlhofen | 1992-01-28 |
| 5066568 | Method of developing negative working photographic elements | Wayne A. Mitchell | 1991-11-19 |
| 5008175 | Copying materials | Paul Stahlhofen | 1991-04-16 |
| 4980271 | Developer compositions for lithographic printing plates with benzyl alcohol, potassium toluene sulfonate and sodium (xylene or cumene) sulfonate | Wayne A. Mitchell | 1990-12-25 |
| 4912021 | Developer-finisher compositions for lithographic plates | Major S. Dhillon, Douglas A. Seeley | 1990-03-27 |
| 4873174 | Method of using developer-finisher compositions for lithographic plates | Major S. Dhillon, Douglas A. Seeley | 1989-10-10 |
| 4851324 | Phenoxy propanol containing developer compositions for lithographic plates having neutral pH | — | 1989-07-25 |
| 4786580 | Method of developing imaged diazo material with propanol containing developer composition | Wayne A. Mitchell | 1988-11-22 |
| 4783395 | Desensitizing solution for lithographic printing plates | Wayne A. Mitchell | 1988-11-08 |
| 4780396 | Organic solvent free developer compositions for lithographic plates having neutral pH comprising a lithium and potassium salt and an anionic surfactant | Wayne A. Mitchell | 1988-10-25 |
| 4728597 | Desensitizing solution for lithographic printing plates | Wayne A. Mitchell | 1988-03-01 |
| 4592992 | Developer compositions for lithographic plates | Wayne A. Mitchell | 1986-06-03 |
| 4374920 | Positive developer containing non-ionic surfactants | Stanley F. Wanat | 1983-02-22 |
| 4366224 | Inorganic lithium developer composition | — | 1982-12-28 |
| 4189320 | Light-sensitive o-quinone diazide compositions and photographic reproduction processes and structures | — | 1980-02-19 |