Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8311440 | Laser scanner window cleaner | — | 2012-11-13 |
| 8224214 | Collapsible packaging system | Michele Kayla Mae Durham, Heinz Erwin Grellmann | 2012-07-17 |
| 8007095 | Apparatus for reading markings on a solid ink stick | — | 2011-08-30 |
| 7959270 | Collapsible packaging system | Michele Kayla Mae Durham, Heinz Erwin Grellmann | 2011-06-14 |
| 7874661 | Solid ink stick with coded markings and method and apparatus for reading markings | — | 2011-01-25 |
| 7758173 | Collapsible packaging system | Michele Kayla Mae Durham, Heinz Erwin Grellmann | 2010-07-20 |
| 7577384 | Collapsible packaging system | Michele Kayla Mae Durham, Heinz Erwin Grellmann | 2009-08-18 |
| 6614008 | Universal voltage fuser heater lamp | — | 2003-09-02 |
| 6169875 | Envelope transport structure | — | 2001-01-02 |
| 5975690 | Solid ink stick supply system | H. Erwin Grellmann, John B. Gilbert, Perry E. Wingfield | 1999-11-02 |
| 5917528 | Solid ink stick supply apparatus and method | H. Erwin Grellmann, John B. Gilbert, Randy C. Karambelas, William Bruce Weaver, James B. Jensen +1 more | 1999-06-29 |
| 5870661 | Apparatus and method for controlling media temperature in an imaging apparatus | Paul John Menzel, Beta Y. Ni | 1999-02-09 |
| 5821952 | Method for automatic print head spacing in an ink jet printer | David D. Martenson, H. Erwin Grellmann | 1998-10-13 |