Issued Patents All Time
Showing 25 most recent of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7414755 | Color quality assessment and color control during color reproduction | — | 2008-08-19 |
| 7113281 | Device for the pixel-by-pixel photoelectric measurement of a planar measured object | — | 2006-09-26 |
| 7057727 | Device for the pixel-by-pixel photoelectric measurement of a planar measured object | — | 2006-06-06 |
| 6469804 | Method of obtaining colorimetric values | Nikolaus Pfeiffer, Manfred Schneider | 2002-10-22 |
| 6084693 | Process and apparatus for the determination of halftone percentage values | Bruno Zimmermann, Thomas Senn | 2000-07-04 |
| 6041708 | Process and apparatus for controlling the inking process in a printing machine | Helmut Kipphan, Gerhard Loffler, Guido Keller | 2000-03-28 |
| 6028682 | Scanning device for pixel-by-pixel photoelectric measurement of a measured object | Kurt Ruegg | 2000-02-22 |
| 6012390 | Method for controlling the inking of a printing press by determining color value gradients | Kurt Ruegg | 2000-01-11 |
| 5967033 | Method of determining ink coverage in a print image | Nikolaus Pfeiffer, Manfred Schneider | 1999-10-19 |
| 5957049 | Method controlling ink application in a printing press | Harald Ammeter, Nikolaus Pfeiffer, Manfred Schneider | 1999-09-28 |
| 5530563 | Process and apparatus for the determination of halftone percentage values | Bruno Zimmermann, Thomas Senn | 1996-06-25 |
| D357695 | Hand held unit for determining photometric data | — | 1995-04-25 |
| 5206707 | Apparatus for the analysis of print control fields | — | 1993-04-27 |
| 5182721 | Process and apparatus for controlling the inking process in a printing machine | Helmut Kipphan, Gerhard Loffler, Guido Keller | 1993-01-26 |
| 5068810 | Process for the determination of colorimetric differences between two screen pattern fields printed by a printing machine and process for the color control or ink regulation of the print of a printing machine | — | 1991-11-26 |
| 4967379 | Process for the ink control or regulation of a printing machine by comparing desired color to obtainable color data | — | 1990-10-30 |
| 4961646 | Manual device for the detection of optical reflection properties | Fortunat Schrammli, Markus Berner | 1990-10-09 |
| 4856903 | Electronic device for determining a register error in multi-color printing machines | Helmut Kipphan, Willi Jeschke, Jean-Pierre Graf | 1989-08-15 |
| 4849423 | Purine derivatives, medicaments containing them and methods of treating cardiac insufficiencies and irregularities with them. | — | 1989-07-18 |
| 4671661 | Process, apparatus and color measuring strip for evaluating print quality | — | 1987-06-09 |
| 4665496 | Process and apparatus for the evaluation of the printing quality of a printed product by an offset printing machine | — | 1987-05-12 |
| 4660159 | Process and apparatus for the regulation of ink feed controls in an offset printing machine | — | 1987-04-21 |
| 4649502 | Process and apparatus for evaluating printing quality and for regulating the ink feed controls in an offset printing machine | Guido Keller, Andreas Spiess, Rolf Boegli | 1987-03-10 |
| 4645350 | Densitometer | Markus Weidmann, Wilhelm Koch | 1987-02-24 |
| 4505589 | Process and apparatus for the colorimetric analysis of printed material | Rolf Boegli, Ulrich Birch, Helmut Kipphan, Gerhard Loffler | 1985-03-19 |