Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4789257 | Line find feature for an electronic typewriter | John Brown, Darell D. Cronch, Kevin Tucker | 1988-12-06 |
| 4727304 | Phase sequencer for stepping motor | — | 1988-02-23 |
| 4706008 | Self-adjusting homing for a stepping motor | Darell D. Cronch, Richard T. Fisher, John E. Passafiume | 1987-11-10 |
| 4507479 | Color-forming sulfonamidodiphenylamine dye precursor that produces phenazine dye | Rolf S. Gabrielsen, James E. Klijanowicz | 1985-03-26 |
| 4499304 | Color-forming sulfonamidodiphenylamines and corresponding sulfonimide dyes | Rolf S. Gabrielsen, James E. Klijanowicz, Max H. Stern | 1985-02-12 |
| 4390606 | Color-forming para-sulfonamidodiphenylamine dye precursor and sulfonimide dye in photographic material and process | Rolf S. Gabrielsen, James E. Klijanowicz, Max H. Stern | 1983-06-28 |
| 4380666 | Color-forming sulfonamidodiphenylamine dye precursor that produces phenazine dye | Rolf S. Gabrielsen, James E. Klijanowicz | 1983-04-19 |
| 4368246 | Photographic materials and processes comprising color-forming sulfonamidodiphenylamine dye precursors and corresponding phenazine dyes | Rolf S. Gabrielsen, James E. Klijanowicz | 1983-01-11 |