Issued Patents All Time
Showing 26–35 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879199 | Process for preparing encapsulated color toner compositions | Robert J. Gruber, Raymond A. Yourd, III, John F. Knapp, Steven B. Bolte | 1989-11-07 |
| 4810611 | Developer compositions with coated carrier particles having incorporated therein colorless additives | Ronald F. Ziolo | 1989-03-07 |
| 4794878 | Ultrasonics traveling wave for toner transport | Edward W. Connors, Robert G. Martin | 1989-01-03 |
| 4734350 | Positively charged developer compositions with modified charge enhancing additives containing amino alcohols | John Wei-Ping Lin, Lesley P. Dudek | 1988-03-29 |
| 4493883 | Electrophotographic toner compositions containing novel imide charge control _additives | Robert J. Gruber, Doretta Agostine, Raymond A. Yourd, III | 1985-01-15 |
| 4482620 | Method of fusing toner compositions containing pyridinium tetrafluoroborates | Robert J. Gruber, Raymond A. Yourd, III | 1984-11-13 |
| 4464452 | Developer compositions containing diaryl sulfonimides | Robert J. Gruber, Raymond A. Yourd, III | 1984-08-07 |
| 4460672 | Positively charged electrostatic toner contains low molecular weight waxy material and pyridinium halide or organic sulfonate | Robert J. Gruber, Steven B. Bolte, Ronald J. Koch | 1984-07-17 |
| 4454214 | Toner compositions containing pyridinium tetrafluoroborates | Robert J. Gruber, Raymond A. Yourd, III | 1984-06-12 |
| 4426436 | Process for positive charge sharing toner compositions | Richard B. Lewis, Robert J. Gruber, Richard F. Koehler, Jr. | 1984-01-17 |