using colour half-tone screens

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Patents Grantslast 30 patents

Information Patent Grant
Method and materials for improving the color balance of photographi...
- Patent number 4,458,002
- Issue date Jul 3, 1984
- Agfa-Gevaert, N.V.
- Wilhelmus Janssens
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
3589899
- Patent number 3,589,899
- Issue date Jun 29, 1971
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
3336135
- Patent number 3,336,135
- Issue date Aug 15, 1967
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
3132946
- Patent number 3,132,946
- Issue date May 12, 1964
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
3085878
- Patent number 3,085,878
- Issue date Apr 16, 1963
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
2311071
- Patent number 2,311,071
- Issue date Feb 16, 1943
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
2304988
- Patent number 2,304,988
- Issue date Dec 15, 1942
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY