Issued Patents All Time
Showing 25 most recent of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7554687 | Methods and apparatus for determining toner level in electro-photographic print engines | Michael W. Barry, Jack N. Bartholmae, Francis A. Rowe, Peter A. Zuber | 2009-06-30 |
| 7532347 | Methods and apparatus for routing pages to printers in a multi-print engine as a function of print job parameters | Michael W. Barry, Jack N. Bartholmae, Francis A. Rowe, Peter A. Zuber | 2009-05-12 |
| 7471403 | Apparatus and methods for selectively distributing print pages in multiple print engine systems | Michael W. Barry, Francis A. Rowe | 2008-12-30 |
| 7301665 | Method and apparatus for determining toner level in electrophotographic print engines | Michael W. Barry, Jack N. Bartholmae, Francis A. Rowe, Peter A. Zuber | 2007-11-27 |
| 7206082 | Method and apparatus for routing pages to printers in a multi-print engine as a function of print job parameters | Michael W. Barry, Jack N. Bartholmae, Francis A. Rowe, Peter A. Zuber | 2007-04-17 |
| 7116444 | Method and apparatus for determining toner level in electrophotographic print engines | Michael W. Barry, Jack N. Bartholmae, Francis A. Rowe, Peter A. Zuber | 2006-10-03 |
| 7095528 | Apparatus and methods for duplex printing in multiple print engine systems | Michael W. Barry, Francis A. Rowe | 2006-08-22 |
| 7046391 | Method and apparatus for providing a color-balanced multiple print engine | Michael W. Barry, Jack N. Bartholmae, Francis A. Rowe, Peter A. Zuber | 2006-05-16 |
| 6977752 | Method and apparatus for determining toner level in electrophotographic print engines | Michael W. Barry, Jack N. Bartholmae, Francis A. Rowe, Peter A. Zuber | 2005-12-20 |
| 6888644 | Method and apparatus for determining toner level in electrophotographic print engines | Michael W. Barry, Jack N. Bartholmae, Francis A. Rowe, Peter A. Zuber | 2005-05-03 |
| 6850335 | Method and apparatus for distributing pages to individual print engines in a multiple print engine | Michael W. Barry, Jack N. Bartholmae, Francis A. Rowe, Peter A. Zuber | 2005-02-01 |
| 6825943 | Method and apparatus to permit efficient multiple parallel image processing of large jobs | Michael W. Barry, Robert G. Pennington, Michael Raines | 2004-11-30 |
| 6707563 | Multiple print engine with error handling capability | Michael W. Barry, Jack N. Bartholmae, Francis A. Rowe, Peter A. Zuber | 2004-03-16 |
| 6657741 | Multiple print engine system with selectively distributed ripped pages | Michael W. Barry, Francis A. Rowe | 2003-12-02 |
| 6633396 | Page synchronization in a color print system | Michael W. Barry, Jack N. Bartholmae, Francis A. Rowe, Peter A. Zuber | 2003-10-14 |
| 6606165 | Method and apparatus for routing pages to printers in a multi-print engine as a function of print job parameters | Michael W. Barry, Jack N. Bartholmae, Francis A. Rowe, Peter A. Zuber | 2003-08-12 |
| 5940186 | Multiple printer module electrophotographic printing device | Michael W. Barry, Francis A. Rowe | 1999-08-17 |
| 5859711 | Multiple print engine with virtual job routing | Michael W. Barry, Jack N. Bartholmae, Francis A. Rowe, Peter A. Zuber | 1999-01-12 |
| 5799232 | Friction drive for an electrophotographic print engine | Keith J. Bradley, Peter A. Zuber | 1998-08-25 |
| 5745657 | Method and apparatus for multi-modal printing with electrophotographic print engine | Michael W. Barry, Jack N. Bartholmae | 1998-04-28 |
| 5596416 | Multiple printer module electrophotographic printing device | Michael W. Barry, Francis A. Rowe | 1997-01-21 |
| 5583623 | Method and apparatus for attaching an image receiving member to a transfer drum | Jack N. Bartholmae | 1996-12-10 |
| 5563689 | Developer module with electromagnetic shutter | Jack N. Bartholmae, James W. O'Brien | 1996-10-08 |
| 5459560 | Buried electrode drum for an electrophotographic print engine with controlled resistivity layer | Jack N. Bartholmae | 1995-10-17 |
| 5442429 | Precuring apparatus and method for reducing voltage required to electrostatically material to an arcuate surface | Jack N. Bartholmae | 1995-08-15 |