Patents by Inventor Theophilus Sorrell

Theophilus Sorrell 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).

  • Ligands for metallizable dyes
    Patent number: 4559291
    Abstract: Photographic assemblages are described employing metallizable redox dye-releasers and a ligand having a coordinating site which is: ##STR1## In a preferred embodiment, the ligand is an alpha amino carboxylic acid, a 2-pyridinecarboxylic acid, a 2-aminoalcohol, a 2-hydroxymethylpyridine, a 2-hydroxyacetic acid, a 1,2-diamine or a 2-hydroxypyridine-N-oxide.
    Type: Grant
    Filed: December 28, 1984
    Date of Patent: December 17, 1985
    Assignee: Eastman Kodak Company
    Inventors: Stephen M. Neumann, Glenn T. Pearce, Theophilus Sorrell