Patents by Inventor David E. Hannie

David E. Hannie 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).

  • Processing compositions for color transfer processes comprising alkali metal fluorides
    Patent number: RE29942
    Abstract: Improvements in the physical characteristics of a photographic assemblage, especially an integral transfer element, are obtained by employing an alkali metal salt in the alkaline processing composition used to process the assemblage. The anion of the salt has a solubility in relation to that of sulfate such that after processing in the presence of calcium and sulfate ions, calcium will combine with said anion in preference to sulfate at any given pH. Especially preferred salts are alkali metal fluorides or oxalates.
    Type: Grant
    Filed: May 1, 1978
    Date of Patent: March 20, 1979
    Assignee: Eastman Kodak Company
    Inventor: David E. Hannie