Patents by Inventor Thomas M. Sheets

Thomas M. Sheets 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).

  • Photoimaging composition containing admixture of leuco dye and 2,4,5-triphenylimidazolyl dimer
    Patent number: 4622286
    Abstract: Photoimaging composition comprising an admixture of leuco dye, and at least one 2,4,5-triphenylimidazolyl dimer prepared by an oxidative coupling reaction, a reaction product, 2,2',5-tris-(o-chlorophenyl)-4-(3,4-dimethoxyphenyl)-4',5'-diphenylbiimida zole, being present in an amount of 0.01 to 90.0% by weight based on the weight of solids in the composition. The composition when coated on a support is useful for prepress proofing.
    Type: Grant
    Filed: September 16, 1985
    Date of Patent: November 11, 1986
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Thomas M. Sheets