Patents by Inventor David J. Valvo

David J. Valvo 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: 6479225
    Abstract: A silver halide photographic element for forming a sepia image comprising a support and an image forming layer which contains a cyan dye forming coupler, a magenta dye forming coupler and a yellow dye forming coupler, wherein the support has CIELAB a* and b* values within the following ranges at L*>90:0<b*<6.0, 0<a*<1.
    Type: Grant
    Filed: July 30, 2001
    Date of Patent: November 12, 2002
    Assignee: Eastman Kodak Company
    Inventors: David J. Valvo, Kurt M. Schroeder, Michael R. Roberts
  • Patent number: 6261747
    Abstract: A two-part sepia toning kit can be used to provide desired stable, warm sepia toned images in black-and-white photographic positive or negative materials such as black-and-white photographic prints. One part of the kit includes a silver bleaching composition comprising a hexacyanoferrate as the bleaching agent and halide ions in a molar ratio of at least 2.25:1. The second part is a toning composition that includes a sulfur-containing toning agent.
    Type: Grant
    Filed: May 23, 2000
    Date of Patent: July 17, 2001
    Assignee: Eastman Kodak Company
    Inventors: David J. Valvo, Hugh G. McGuckin, John S. Badger
  • Patent number: 5881332
    Abstract: A film magazine comprising a housing having a film egress slot and a film ingress slot, a film supply spool rotatably supported within the housing proximate the film egress slot, and a film take-up spool rotatably supported within the housing proximate the film ingress slot, is characterized in that the housing has a pair of opposite ends that are spaced apart a maximum dimension of the housing, and the film egress and film ingress slots are positioned at the respective ends of the housing in order that a filmstrip connected through the film egress and film ingress slots to the film supply and film take-up spools must longitudinally extend between the film supply and film take-up spools a minimum length that is greater than the maximum dimension of the housing.
    Type: Grant
    Filed: June 11, 1997
    Date of Patent: March 9, 1999
    Assignee: Eastman Kodak Company
    Inventor: David J. Valvo