Inventor
WELLENDORF KLAUS
DE17 patents
⚠️ This page may combine multiple inventors who share the name “WELLENDORF KLAUS”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HELL RUDOLF DR ING GMBH
15 patentsUS4414635ANov 8, 1983
Method and circuit for recognition of colors
HELL RUDOLF DR ING GMBH130 citations94
US4590515AMay 20, 1986
Method and apparatus for modifying color reduction depending on tone
HELL RUDOLF DR ING GMBH40 citations92
US4476487AOct 9, 1984
Method and circuit arrangement for partial electronic retouch in color image reproduction
HELL RUDOLF DR ING GMBH34 citations92
US4328515AMay 4, 1982
Method and a device for recorrecting standard color corrections in a color picture recording
HELL RUDOLF DR ING GMBH39 citations92
US4231069AOct 28, 1980
Method and apparatus for producing image combinations
HELL RUDOLF DR ING GMBH37 citations92
US4075663AFeb 21, 1978
Method for the rastered reproduction of half-tone pictures providing changes in the individual picture elements during transfer from an original to a reproduction
HELL RUDOLF DR ING GMBH36 citations92
US4393399AJul 12, 1983
Method and apparatus for partial electronic retouching of colors
HELL RUDOLF DR ING GMBH44 citations91
US4240118ADec 16, 1980
Method for electro-optically sensing, transmitting pictorial information
HELL RUDOLF DR ING GMBH26 citations81
US4516155AMay 7, 1985
Method for partially smoothing retouch in electronic color reproduction
HELL RUDOLF DR ING GMBH19 citations73
US4240117ADec 16, 1980
Apparatus for electro-optically recording pictorial information for a facsimile transmission system
HELL RUDOLF DR ING GMBH15 citations73
US4199784AApr 22, 1980
Method and apparatus for electro-optically recording pictorial information for a facsimile transmission system
HELL RUDOLF DR ING GMBH11 citations73
US4419691ADec 6, 1983
Method for the improved reproduction of image in reproduction technology
HELL RUDOLF DR ING GMBH14 citations70
US4276567AJun 30, 1981
Recording line elements
HELL RUDOLF DR ING GMBH10 citations70
US4204223AMay 20, 1980
Method and apparatus for making color corrections in the manufacture of printing plates
HELL RUDOLF DR ING GMBH16 citations68
US4203136AMay 13, 1980
Method and apparatus for electro-optically sensing, transmitting and recording pictorial information in particular facsimile transmission systems
HELL RUDOLF DR ING GMBH13 citations66