Patents by Inventor Allison H. C. Dale

Allison H. C. Dale 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).

  • High contrast photographic silver halide material
    Patent number: 5512415
    Abstract: A high-contrast photographic element, adapted for use in the field of graphic arts, includes a hydrazide nucleator and an amine booster and comprises a silver halide emulsion layer which is capable of forming a latent image under conditions of use and a second silver halide emulsion layer which is not capable of forming a latent image under conditions of use.
    Type: Grant
    Filed: March 7, 1995
    Date of Patent: April 30, 1996
    Assignee: Eastman Kodak Company
    Inventors: Allison H. C. Dale, Roger H. Piggin, Michael B. Ledger, David Beaumond