Ingo Hoffrichter

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Kiel, DE

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Patents Grantslast 30 patents

Information Patent Grant
Method and circuit arrangement for selective correction of hues and...
- Patent number 4,649,423
- Issue date Mar 10, 1987
- Dr. Ing. Rudolf Hell GmbH
- Ingo Hoffrichter
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for the production of color separations for si...
- Patent number 4,631,579
- Issue date Dec 23, 1986
- Dr. Ing. Rudolf Hell GmbH
- Ingo Hoffrichter
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for the recognition of hues and colors
- Patent number 4,623,973
- Issue date Nov 18, 1986
- Dr. Ing. Rudolf Hell GmbH
- Ingo Hoffrichter
- G01 - MEASURING TESTING
Information Patent Grant
Apparatus for mixing image signals to obtain a printing master
- Patent number 4,403,249
- Issue date Sep 6, 1983
- Dr.-Ing. Rudolf Hell GmbH
- Hans-Georg Knop
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus for mixing image signals to obtain a printing master
- Patent number 4,255,761
- Issue date Mar 10, 1981
- Rudolf Hell GmbH.
- Hans-Georg Knop
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus including a circuit arrangement for adjusting the color s...
- Patent number 4,136,360
- Issue date Jan 23, 1979
- Dr.-Ing. Rudolf Hell GmbH
- Ingo Hoffrichter
- H04 - ELECTRIC COMMUNICATION TECHNIQUE