Patents by Inventor Gary N. Widiger

Gary N. Widiger 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 image dye-providing materials and photographic products and processes
    Patent number: 4598158
    Abstract: Diffusion transfer photographic color processes and products are described utilizing novel image dye-providing materials which provide image dyes having the chromophoric system represented by the formula ##STR1## wherein X is ##STR2## or --SO.sub.2 --R.sub.1 ; Z is H, alkyl or aryl; R is H, alkyl or aryl; DYE is any dye moiety; R.sub.1 is H, alkyl, aryl, --NH.sub.2, --NHR.sub.2, --N(R.sub.2).sub.2 or --OR.sub.2 ; R.sub.2 is H, alkyl or aryl; and m is 1 or 2. The image dye providing material includes a diffusion control moiety such as a hydroquinonyl group or a precursor thereof and may be diffusible or nondiffusible as a function of the diffusion control moiety.
    Type: Grant
    Filed: January 10, 1983
    Date of Patent: July 1, 1986
    Assignee: Polaroid Corporation, Patent Dept.
    Inventors: Stephen R. Herchen, Gary N. Widiger
  • Hydrazine dyes
    Patent number: 4420627
    Abstract: There are described novel compounds which are represented by the formula ##STR1## wherein X is ##STR2## or --SO.sub.2 R.sub.1 ; Z is H, alkyl or aryl; R is H, alkyl or aryl; DYE is any dye moiety; R.sub.1 is H, alkyl, aryl, --NH.sub.2, --NHR.sub.2, --N(R.sub.2).sub.2 or --OR.sub.2 ; R.sub.2 is H, alkyl or aryl; and m is 1 or 2. The compounds are useful as dyes.
    Type: Grant
    Filed: December 18, 1981
    Date of Patent: December 13, 1983
    Assignee: Polaroid Corporation
    Inventor: Gary N. Widiger
  • Novel image dye-providing materials and photographic products and processes
    Patent number: 4386150
    Abstract: Diffusion transfer photographic color processes and products are described utilizing novel image dye-providing materials which provide image dyes having the chromophoric system represented by the formula ##STR1## wherein X is ##STR2## or --SO.sub.2 --R.sub.1 ; Z is H, alkyl or aryl; R is H, alkyl or aryl; DYE is any dye moiety; R.sub.1 is H, alkyl, aryl, --NH.sub.2, --NHR.sub.2, --N(R.sub.2).sub.2 or --OR.sub.2 ; R.sub.2 is H, alkyl or aryl; and m is 1 or 2. The image dye providing material includes a diffusion control moiety such as a hydroquinonyl group or a precursor thereof and may be diffusible or nondiffusible as a function of the diffusion control moiety.
    Type: Grant
    Filed: December 18, 1981
    Date of Patent: May 31, 1983
    Assignee: Polaroid Corporation
    Inventors: Stephen R. Herchen, Gary N. Widiger