Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5473356 | Method of compensating for resistance tolerances in printing a multi-tone picture | Raimund Nisius | 1995-12-05 |
| 5449238 | Method for operating a recording device powered by at least one rechargeable accumulator | Ngoc Quyen Pham, Walter Eiler, Mohamed Al-Khatib, Wolfgang Pekruhn | 1995-09-12 |
| 5429441 | Process of printing with serial printhead | Harald Schulz | 1995-07-04 |
| 5365348 | Process for printing a halftone image | Raimund Nisius, Hartmut Grethen, Wolfgang Pekruhn | 1994-11-15 |
| 4756633 | Inking ribbon including a sublimable release layer for color transfer under the influence of heat | Hartmut Grethen, Friedrich-Wilhelm Hagemeyer, Wolfgang Pekruhn | 1988-07-12 |