Patents by Inventor Douglas C. Joseph

Douglas C. Joseph 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).

  • Patent number: 4209584
    Abstract: Photographic elements comprised of a support coated on one side with at least one image-forming layer, and on the opposite side with separate anticurl and antistatic layers in contiguous relationship, are prepared by a method in which the anticurl and antistatic layers are coated on the support by a tandem gravure coating process. In carrying out such process, the anticurl layer is formed by gravure coating of an anticurl coating composition comprising a hydrophilic colloid and the antistatic layer is formed by gravure coating of an antistatic coating composition comprising an antistatic agent and a diffusible hardening agent, which acts as a hardener for hydrophilic colloids and is present in the antistatic coating composition in an amount sufficient to diffuse from the antistatic layer to the anticurl layer.
    Type: Grant
    Filed: June 15, 1979
    Date of Patent: June 24, 1980
    Assignee: Eastman Kodak Company
    Inventor: Douglas C. Joseph
  • Patent number: 4196001
    Abstract: Photographic elements are protected against the adverse effects resulting from accumulation of static electrical charges by incorporating in the element an antistatic layer formed from an aqueous coating composition containing a water-soluble film-forming polymeric anionic polyelectrolyte in free acid form, a water-soluble film-forming cross-linkage polymeric binder, and an acid-acting cross-linking agent for the polymeric binder. The antistatic layer is useful with both photographic films and photographic papers employed in black-and-white photography or in color photography and will function as an effective anticurl layer as well as providing excellent protection against static. It is durable, abrasion resistant, non-tacky and highly resistant to the aqueous processing baths employed in photographic processing.
    Type: Grant
    Filed: April 16, 1975
    Date of Patent: April 1, 1980
    Assignee: Eastman Kodak Company
    Inventors: Douglas C. Joseph, Ronald L. Hartman