Issued Patents All Time
Showing 26–50 of 71 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5723247 | Toner and developer compositions with organosiloxane copolymers | Robert A. Guistina | 1998-03-03 |
| 5714293 | Toner compositions containing N-(2-cyanoethenyl)sulfonamides | John C. Wilson | 1998-02-03 |
| 5703265 | Monofunctional n--(2--cyanoethenyl)sulfonamides | John C. Wilson | 1997-12-30 |
| 5700611 | Method for forming overlapping toner images | Michael T. Regan | 1997-12-23 |
| 5681680 | Difunctional N-(2-cyanoethenyl) sulfonamides and toner compositions containing them | John C. Wilson | 1997-10-28 |
| 5678131 | Apparatus and method for regulating toning contrast and extending developer life by long-term adjustment of toner concentration | Allen J. Rushing | 1997-10-14 |
| 5616797 | N-(carbonyl, carbonimidoyl, carbonothioyl)sulfonamide charge control agents and toners and developers | John C. Wilson, Steven M. Bonser | 1997-04-01 |
| 5523484 | Bis and tris N-(carbonyl, carbonimidoyl, carbonothioyl) sulfonamide charge control agents, toners and developers | John C. Wilson | 1996-06-04 |
| 5489975 | Image forming method and apparatus | Joseph Y. Kaukeinen, Thomas A. Jadwin, Eric C. Stelter | 1996-02-06 |
| 5409791 | Image forming method and apparatus | Joseph Y. Kaukeinen, Thomas A. Jadwin, Eric C. Stelter | 1995-04-25 |
| 5405727 | N-(carbonyl, carbonimidoyl, carbonothioyl) sulfonamide charge control agents and toners and developers | John C. Wilson, Steven M. Bonser | 1995-04-11 |
| 5385800 | Bis and tris N-(carbonyl, carbonimidoyl, carbonothioyl)sulfonamide charge control agents, toners and developers | John C. Wilson | 1995-01-31 |
| 5376492 | Method and apparatus for developing an electrostatic image using a two component developer | Eric C. Stelter, Joseph E. Guth | 1994-12-27 |
| 5300384 | Method of forming a toner image, a receiving sheet and a method of making the receiving sheet | Donald S. Rimai, Dinesh Tyagi, William A. Light, Douglas E. Bugner | 1994-04-05 |
| 5282008 | Magnetic roller cleaning apparatus | David J. Ellingham, Bruce J. Rubin | 1994-01-25 |
| 5176977 | Nonpolymeric amorphous developer compositions and developing processes | Michel F. Molaire | 1993-01-05 |
| 5156937 | Reduced viscosity polyester composition for toner powders | John E. Derimiggio, Joseph A. Pavlisko | 1992-10-20 |
| 5147749 | Toners and developers containing n-substituted quinolinium salts as charge control agents | John C. Wilson | 1992-09-15 |
| 5144036 | N-substituted quinolinium salts | John C. Wilson | 1992-09-01 |
| 5082883 | Reduced viscosity polyblends of polyester and epoxy resins | John E. Derimiggio, John C. Wilson | 1992-01-21 |
| 5075190 | Toners and developers containing N-substituted pyridinium salts as charge control agents | Alexandra D. Bermel, Zona R. Pierce, John C. Wilson | 1991-12-24 |
| 5070203 | N,N'-substitutedbis(pyridinium) salts | John C. Wilson | 1991-12-03 |
| 5051330 | Fluorinated onium salts as toner electrostatic transfer agents and charge control agents | Douglas E. Bugner, Lawrence P. DeMejo | 1991-09-24 |
| 5041625 | Toners and developers containing N,N'-substituted-bis(pyridinium) salts as charge control agents | John C. Wilson | 1991-08-20 |
| 4851561 | Quaternary ammonium salts | Douglas E. Bugner | 1989-07-25 |