Patents by Inventor Anton Wemmers

Anton Wemmers 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).

  • Light-sensitive negative-working film containing a diazo oxide sensitizer and a p-toluenesulfonyl halide or a 2,4-dihalo-S-triazine
    Patent number: 4108664
    Abstract: An improved light-sensitive negative-working diazo type film is described. The film includes a diazo-oxide sensitizer and an additive therefore which improves the actinic opacity of the image formed during the diazo process. The additive operates by reacting with the azo dye formed in the image areas. An example of such an additive is a sulfonic acid halide.
    Type: Grant
    Filed: November 1, 1976
    Date of Patent: August 22, 1978
    Assignee: GAF Corporation
    Inventors: Henri G. J. de Boer, Gerrit VAN DER Breggen, Anton Wemmers