Patents by Inventor Mary T. Burgess

Mary T. Burgess 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).

  • 1-Nitroso-1,2,3,4-tetrahydroquinoline and 1-nitroso-indoline compounds
    Patent number: 4067871
    Abstract: This invention relates to N-nitroso compounds having the formula ##STR1## wherein R and R' each are selected from hydrogen and alkyl, Z is --CN or --COOR" wherein R" is alkyl and n is a positive integer from 1 to 7. These compounds are useful as intermediates in the preparation of photographic silver halide developing agents.
    Type: Grant
    Filed: September 9, 1976
    Date of Patent: January 10, 1978
    Assignee: Polaroid Corporation
    Inventors: James R. Bartles-Keith, Mary T. Burgess, Jean B. Rogers
  • Meso-ionic se- and s-containing tetrazoles
    Patent number: 4003910
    Abstract: This invention relates to meso-ionic tetrazole compounds of the formula: ##STR1## wherein X.sup.- is -S.sup.- or -Se.sup.
    Type: Grant
    Filed: August 18, 1975
    Date of Patent: January 18, 1977
    Assignee: Polaroid Corporation
    Inventors: James R. Bartels-Keith, Mary T. Burgess