Patents by Inventor Robert M. Delahunt

Robert M. Delahunt 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).

  • Alkaline fluid photographic processing composition containers
    Patent number: 4303750
    Abstract: A rupturable pod for storing an aqueous alkaline photographic processing composition and dispensing the composition when ruptured, comprising an alkali resistant lining in contact with the processing composition and adhered to itself in regions forming a container enclosing the composition, a gas and moisture barrier of aluminum to prevent the passage of gas or moisture into or out of the container, and a resilient mechanical barrier layer positioned between and adhered to the aluminum and the lining.
    Type: Grant
    Filed: June 16, 1980
    Date of Patent: December 1, 1981
    Assignee: Polaroid Corporation
    Inventors: John E. Campbell, Robert M. Delahunt
  • Film assembly including a hermetically sealed battery
    Patent number: 3967292
    Abstract: A photographic film assembly which comprises a cassette; a supply of photographic film disposed within the cassette; a battery positioned within the cassette which includes one or more cells containing an aqueous electrolyte possessing an ionizable ammonium salt, and means for hermetically sealing the battery positioned within the cassette to prevent volatile effluvia liberated by the battery from contacting said film units.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: June 29, 1976
    Assignee: Polaroid Corporation
    Inventor: Robert M. Delahunt