Issued Patents All Time
Showing 51–75 of 89 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5386277 | Developing apparatus including a coated developer roller | Dah A. Hays, Damodar M. Pai, Donald S. Sypula, William H. Wayman, John F. Yanus +1 more | 1995-01-31 |
| 5385796 | Electrophotographic imaging member having unmodified hydroxy methacrylate polymer charge blocking layer | John W. Spiewak, Huoy-Jen Yuh, Constance J. Thornton, Dennis A. Abramsohn, Deborah J. Nichol-Landry +4 more | 1995-01-31 |
| 5340679 | Intermediate transfer element coatings | Santokh S. Badesha, Dennis A. Abramsohn, Donald S. Sypula, Arnold W. Henry, George J. Heeks +2 more | 1994-08-23 |
| 5338587 | Electrographic methods | Dennis A. Abramsohn, George J. Heeks, Arnold W. Henry, Louis D. Fratangelo, David H. Pan +1 more | 1994-08-16 |
| 5336577 | Single layer photoreceptor | John W. Spiewak, John F. Yanus, Damodar M. Pai, Dennis A. Abramsohn, William W. Limburg +7 more | 1994-08-09 |
| 5300339 | Development system coatings | Dan A. Hays, Damodar M. Pai, Donald S. Sypula, William H. Wayman, John F. Yanus +1 more | 1994-04-05 |
| 5298956 | Reinforced seamless intermediate transfer member | Donald S. Sypula, John S. Berkes, Edward L. Schlueter, Jr., Gerald M. Fletcher, Frank J. Bonsignore +5 more | 1994-03-29 |
| 5266431 | Electrographic imaging members | Dennis A. Abramsohn | 1993-11-30 |
| 5258461 | Electrocodeposition of polymer blends for photoreceptor substrates | John S. Facci, Ronald E. Jansen, David H. Pan, William G. Herbert, Donald S. Sypula | 1993-11-02 |
| 5244762 | Electrophotographic imaging member with blocking layer containing uncrosslinked chemically modified copolymer | John W. Spiewak, Huoy-Jen Yuh, Robert C. U. Yu, Cindy C. Chen, Raymond K. Crandall +1 more | 1993-09-14 |
| 5243392 | Imaging apparatus and process with intermediate transfer element | John S. Berkes, Frank J. Bonsignore, Dennis A. Abramsohn, Donald S. Sypula | 1993-09-07 |
| 5223369 | Process for coating carrier particles | Deepak R. Maniar | 1993-06-29 |
| 5215841 | Electrophotographic imaging member with overcoatings containing fullerenes | Merlin E. Scharfe, Ronald F. Ziolo, Donald S. Sypula | 1993-06-01 |
| 5177854 | Distortion-free method of mounting an end piece on a thin-walled hollow tube | William G. Herbert, Stuart B. Berger, Alexander A. Antonelli, Fredrick A. Warner, Paul J. Kaveny +2 more | 1993-01-12 |
| 5177538 | Phenolic graphite donor roll | Dennis A. Abramsohn, Donald S. Sypula | 1993-01-05 |
| 5172170 | Electroded donor roll for a scavengeless developer unit | Dan A. Hays, Michael A. Morgan, William H. Wayman, Paul J. Brach | 1992-12-15 |
| 5156709 | Fusible white stripe transparency sheets | John G. Van Dusen | 1992-10-20 |
| 5153618 | Ionographic imaging system | John A. Frank, Dennis A. Abramsohn, Donald S. Sypula, Jerome P. Chasko, William L. Gary +4 more | 1992-10-06 |
| 5138918 | Method and apparatus for securing drum blanks on isostatic mandrel | Anthony A. Attardi, Alexander A. Antonelli, Stuart B. Berger, Frederick A. Warner, William G. Herbert +2 more | 1992-08-18 |
| 5120628 | Transparent photoreceptor overcoatings | Ronald F. Ziolo, Donald S. Sypula | 1992-06-09 |
| 5096796 | Blocking and overcoating layers for electroreceptors | Oscar G. Hauser, Dennis A. Abramsohn, Deborah J. Nichol-Landry, Donald S. Sypula, Robert W. Anderson +1 more | 1992-03-17 |
| 5073434 | Ionographic imaging system | John A. Frank, Dennis A. Abramsohm, Donald S. Sypula, Jerome P. Chasko, William L. Gary +4 more | 1991-12-17 |
| 5069993 | Photoreceptor layers containing polydimethylsiloxane copolymers | Susan Robinette, Kathleen M. Carmichael, Emery G. Tokoli, Anita P. Lynch, Robert C. U. Yu | 1991-12-03 |
| 5064509 | Multilayer belts formed by electrodeposition | Andrew R. Melnyk, Donald S. Sypula, Ronald E. Jansen, William G. Herbert, Henry G. Grey | 1991-11-12 |
| 5063128 | Conductive and blocking layers for electrophotographic imaging members | Huoy-Jen Yuh, John W. Spiewak, Constance J. Thornton, Robert C. U. Yu, Vincent E. Hamilton +2 more | 1991-11-05 |