Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6082909 | Manually actuated dispensers and kit for roomlight processing of black-and-white photographic elements | Alan S. Fitterman, Robert E. Dickerson, Peter J. Kelch, Ronald J. Perry, David G. Sherburne | 2000-07-04 |
| 5262816 | Control of temperature in film processor in absence of valid feedback temperature data | Michael Newman | 1993-11-16 |
| 5245377 | Method for detecting non-valid states in film processor temperature control system | Michael Newman | 1993-09-14 |
| 5235370 | Method and apparatus for out-of-rate error detection in film processor temperature control system | Michael Newman | 1993-08-10 |
| 5235371 | Modification of film processor chemistry proportional heating during replenishment | Michael Newman | 1993-08-10 |
| 5132716 | System for updating software in automatic film processor | Roger D. Ellsworth | 1992-07-21 |
| 5065173 | Processor with speed independent fixed film spacing | Roger D. Ellsworth | 1991-11-12 |
| 5053797 | System for updating software in automatic film processor | Roger D. Ellsworth | 1991-10-01 |
| 5027145 | Heat exchanger for film processor | — | 1991-06-25 |
| 4994837 | Processor with temperature responsive film transport lockout | Roger D. Ellsworth | 1991-02-19 |
| 4978858 | Optical web detection and measurement system especially adapted for controlling replenishment of x-ray film processing chemicals | Roger D. Ellsworth, William A. Richards, James K. Bober | 1990-12-18 |