Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5275918 | Ultraviolet curable heat activatable transfer toners | Robert P. Held | 1994-01-04 |
| 5252429 | Process of color development using pearlescent toners having reduced stain characteristics | — | 1993-10-12 |
| 5194366 | Pearlescent toners having reduced stain characteristics | — | 1993-03-16 |
| 4869996 | Process for preparing negative images on a positive-type tonable photosensitive element | Peter J. McCartin, Robert P. Held, Howard Matrick, Bohdan Rakoczy | 1989-09-26 |
| 4756991 | Fluorescent toners surface coated with polymeric quaternary ammonium compound and slip agent | — | 1988-07-12 |
| 4547457 | Process of preparing toner treated with polymeric quaternary ammonium salt and slip agent | Howard Matrick | 1985-10-15 |