Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6060200 | Photo-erasable data processing forms and methods | Ronald Sinclair Nohr, John Gavin MacDonald | 2000-05-09 |
| 5865471 | Photo-erasable data processing forms | Ronald Sinclair Nohr, John Gavin MacDonald | 1999-02-02 |
| 5733693 | Method for improving the readability of data processing forms | Ronald Sinclair Nohr, John Gavin MacDonald | 1998-03-31 |
| 5291258 | Support ski for film cleaning device | James H. Cain, Andrew J. Mauer, Richard Charles Hutchings | 1994-03-01 |
| 5281982 | Pixelized toning | Mark C. Zaretsky | 1994-01-25 |
| 5184194 | Carrier particle scavenging device | Catherine Newell, Andrew J. Mauer | 1993-02-02 |
| 5001028 | Electrophotographic method using hard magnetic carrier particles | Yee S. Ng, Eric K. Zeise | 1991-03-19 |
| 4931835 | Apparatus for monitoring developer mixture | Joanne M. Higgins | 1990-06-05 |
| 4794421 | Apparatus and method for electrophotographically producing copies from originals having continuous-tone and other content | Michael D. Stoudt, Eric K. Zeise, Jerome G. Spitzner, deceased, David Q. McDowell, George N. Tsilibes | 1988-12-27 |
| 4791450 | Multicolor electrophotographic reproduction apparatus and method for producing color accented copies | Jerome G. Spitzner, deceased, Michael D. Stoudt, Eric K. Zeise | 1988-12-13 |
| RE32259 | Method and means for improving maximum density and tonal range of electrographic images | George P. Kasper, Arthur S. Kroll | 1986-10-07 |
| 4602863 | Electrographic development method, apparatus and system | Garold F. Fritz, George P. Kasper, Arthur S. Kroll | 1986-07-29 |
| 4473029 | Electrographic magnetic brush development method, apparatus and system | Garold F. Fritz, George P. Kasper, Arthur S. Kroll | 1984-09-25 |
| 4385823 | Method and means for improving maximum density and tonal range of electrographic images | George P. Kasper, Arthur S. Kroll | 1983-05-31 |
| 4307165 | Plural imaging component microcellular arrays, processes for their fabrication, and electrographic compositions | Richard N. Blazey, Peter S. Alexandrovich, Domenic Santilli | 1981-12-22 |
| 4287285 | Method and apparatus for fabricating personal identification documents | — | 1981-09-01 |