Patents by Inventor Hector Alfons Vanden Eynde

Hector Alfons Vanden Eynde has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Novel photographic color coupling compounds
    Patent number: 4080504
    Abstract: Novel magenta-forming 3-anilino-2-pyrazolin-5-one color couplers for use in silver halide photography are described wherein the anilino group carries an aryloxysulphonyl group.
    Type: Grant
    Filed: January 5, 1976
    Date of Patent: March 21, 1978
    Assignee: AGFA-GEVAERT N.V.
    Inventors: Raphael Karel Van Poucke, Hector Alfons Vanden Eynde, Leo August Van Wijnsberghe
  • Silver halide emulsions containing 2-pyrazolon-5-one photographic colour couplers
    Patent number: 3947272
    Abstract: Novel magenta forming colour couplers for use in silver halide colour photography are described which correspond to the formula: ##EQU1## wherein R.sub.1 represents hydrogen, alkyl or aryl; R.sub.2 represents fluoroalkyl, cyanoalkyl or phenyl; X is hydrogen or a displaceable group; Ar represents phenylene and Y represents alkyl, aryl, alkylamino, arylamino or alkylarylamino.
    Type: Grant
    Filed: March 18, 1974
    Date of Patent: March 30, 1976
    Assignee: Agfa-Gevaert, N. V.
    Inventors: Hector Alfons Vanden Eynde, Raphael Karel Van Poucke
  • Silver halide emulsions containing 3-anilino-2-pyrazolin-5-one color couplers
    Patent number: 3930861
    Abstract: Novel magenta-forming 3-anilino-2-pyrazolin-5-one colour couplers for use in silver halide photography are described wherein the anilino group carries an aryloxysulphonyl group.
    Type: Grant
    Filed: March 18, 1974
    Date of Patent: January 6, 1976
    Assignee: Agfa-Gevaert N.V.
    Inventors: Raphael Karel Van Poucke, Hector Alfons Vanden Eynde, Leo August Van Wijnsberghe