Issued Patents All Time
Showing 25 most recent of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6499831 | Powder conveying and dispensing method and apparatus using traveling wave transport | — | 2002-12-31 |
| 6416171 | Xerojet dry powder printing process | — | 2002-07-09 |
| 5850587 | Electrostatic toner conditioning and controlling means II | — | 1998-12-15 |
| 5541716 | Electrostatic toner conditioning and transport system | — | 1996-07-30 |
| 5517288 | Toner ribbon development cassette | Robert G. Martin, Edward W. Connors | 1996-05-14 |
| 5453768 | Printing apparatus with toner projection means | — | 1995-09-26 |
| 5337124 | Low bead impulse donor loading | Robert G. Martin | 1994-08-09 |
| 5276488 | Donor belt and electrode structure supported behind the belt for developing electrostatic images with toner | — | 1994-01-04 |
| 5257046 | Direct electrostatic printing with latent image assist | — | 1993-10-26 |
| 5214451 | Toner supply leveling in multiplexed DEP | John Sotack, William M. Lindenfelser | 1993-05-25 |
| 5204696 | Ceramic printhead for direct electrostatic printing | Heiko Rommelmann | 1993-04-20 |
| 5204697 | Ionographic functional color printer based on Traveling Cloud Development | — | 1993-04-20 |
| 5193011 | Method and apparatus for producing variable width pulses to produce an image having gray levels | Gary A. Dir, John Sotack, Joseph F. Stephany | 1993-03-09 |
| 5153618 | Ionographic imaging system | John A. Frank, Joseph Mammino, Dennis A. Abramsohn, Donald S. Sypula, Jerome P. Chasko +4 more | 1992-10-06 |
| 5132708 | DEP apparatus for selectively creating monochrome highlight color or process color images | Raymond W. Stover | 1992-07-21 |
| 5097277 | Cyclonic toner charging donor | Robert G. Martin | 1992-03-17 |
| 5073434 | Ionographic imaging system | John A. Frank, Joseph Mammino, Dennis A. Abramsohm, Donald S. Sypula, Jerome P. Chasko +4 more | 1991-12-17 |
| 5040004 | Belt donor for direct electrostatic printing | Robert G. Martin | 1991-08-13 |
| 5038159 | Apertured printhead for direct electrostatic printing | William M. Lindenfelser, John Sotack | 1991-08-06 |
| 4949103 | Direct electrostatic printing apparatus and method for making labels | William A. Sullivan | 1990-08-14 |
| 4912489 | Direct electrostatic printing apparatus with toner supply-side control electrodes | — | 1990-03-27 |
| 4903050 | Toner recovery for DEP cleaning process | — | 1990-02-20 |
| 4876561 | Printing apparatus and toner/developer delivery system therefor | — | 1989-10-24 |
| 4860036 | Direct electrostatic printer (DEP) and printhead structure therefor | — | 1989-08-22 |
| 4814796 | Direct electrostatic printing apparatus and toner/developer delivery system therefor | — | 1989-03-21 |