Patents by Inventor Camille A. Vandeputte

Camille A. Vandeputte 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).

  • Photographic bleach compositions containing bleach-accelerating compounds
    Patent number: 4201585
    Abstract: The processing of exposed photographic silver halide color materials is described while using a bleach or bleach-fixing bath containing better bleach-accelerating compounds. The bleach-accelerating compounds are polyoxyethylene compounds comprising at least 20 mol % of recurring oxyethylene units, which carry a thioether group in a sidechain.
    Type: Grant
    Filed: October 17, 1978
    Date of Patent: May 6, 1980
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Robert J. Pollet, Camille A. Vandeputte, Francis J. Sels, George F. van Veelen
  • Development of photographic silver halide material
    Patent number: 4072523
    Abstract: A method is described of developing a photographic silver halide element containing developable silver halide by development in the presence of a development accelerator which is a compound corresponding to the following general formula and containing in its molecule at least one thioether sulphur atom linked to two carbon atoms: ##STR1## WHEREIN: R is hydrogen, hydroxy, hydroxyalkyl, alkoxy, alkylthio or alkylamino,Alk is en alkylene group which may be interrupted by --O--, --S--, or --N(Q)-- wherein Q is hydrogen or a C.sub.1 -C.sub.
    Type: Grant
    Filed: January 13, 1976
    Date of Patent: February 7, 1978
    Assignee: AGFA-GEVAERT, N.V.
    Inventors: Robert J. Pollet, Francis J. Seis, Camille A. Vandeputte
  • Development of photographic silver halide material
    Patent number: 4072526
    Abstract: A method is described of developing a photographic silver halide element containing developable silver halide by development in the presence of a development accelerator which is a polyaddition compound having recurring units of the following general formula, the recurring units containing at least one thioether sulphur atom linked to two carbon atoms: ##STR1## wherein: Q is --O--, --S--, --S alkylene S-- or --O alkylene O-- wherein the alkylene group may be interrupted by oxygen or sulphur,Each of X.sub.1 and X.sub.2 represents oxygen or sulphur,Alk stands for alkylene which may be interrupted by oxygen or sulphur, andR is hydrogen or COR.sub.1, SO.sub.2 R.sub.1 or CONHR.sub.1 wherein R.sub.1 is an alkyl group or an aryl group andWherein at least one of R, Q, X.sub.1, Alk and X.sub.2 is or comprises a thioether sulphur atom.
    Type: Grant
    Filed: January 13, 1976
    Date of Patent: February 7, 1978
    Assignee: AGFA-GEVAERT, N.V.
    Inventors: Francis J. Seis, Robert J. Plllet, Camille A. Vandeputte, Jozef F. Willems