Patents by Inventor David Francis Jennings

David Francis Jennings 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 density polymer particles and dispersion of same
    Patent number: 8815395
    Abstract: A high density polymer particle includes a cross-linked organic polymer host matrix; and a high density metal provided within the interior of the cross-linked organic polymer host matrix.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: August 26, 2014
    Assignee: Eastman Kodak Company
    Inventors: David Francis Jennings, James R. Bennett, Mridula Nair, Mary Christine Brick
  • HIGH DENSITY POLYMER PARTICLES AND DISPERSION OF SAME
    Publication number: 20140017498
    Abstract: A high density polymer particle includes a cross-linked organic polymer host matrix; and a high density metal provided within the interior of the cross-linked organic polymer host matrix.
    Type: Application
    Filed: July 13, 2012
    Publication date: January 16, 2014
    Inventors: David Francis Jennings, James R. Bennett, Mridula Nair, Mary Christine Brick
  • Biaxially oriented synthetic linear polyester film base material with copolymer subbing layer
    Patent number: 4098953
    Abstract: Film base material is provided which comprises a film of biaxially oriented synthetic linear polyester of highly hydrophobic character having superimposed thereon adherent to said film a subbing layer which contains a copolymer of vinylidene chloride, an alkyl acrylate or methacrylate, an allyl or methallyl component containing an active methylene group the monomer of which has the general formula ##STR1## wherein T is --CN or --COCH.sub.3, X is O, NH or S, and R is a hydrogen atom or methyl group and optionally at least one copolymerizable acid.The subbing layer improves the adhesion between the film support and the photographic emulsion layers and prevents the separation of the layers or frilling when the final photographic film is processed.
    Type: Grant
    Filed: July 14, 1976
    Date of Patent: July 4, 1978
    Assignee: Ciba-Geigy AG
    Inventors: Peter John Wright, Geoffrey Michael Dodwell, David Francis Jennings