Patents by Inventor Vivian K. Walworth

Vivian K. Walworth 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).

  • Publication number: 20100245998
    Abstract: An aspect of the present disclosure provides for a quarter-wave retarder film that is overlaid onto a linearly-polarized stereoscopic image pair in an appropriate orientation in order to produce an image that is viewable using circularly polarized viewing glasses for increased viewing comfort and head-tilt resistance. Another aspect of the present disclosure enables the production of StereoJet-type ink jet images through the use of two separate single-sided clear polarizer substrates with the stretch orientation parallel to the running edge of the support layer. A further aspect of the present disclosure is directed to the production of laminated stereoscopic images in which the spacing of the image planes of the members of the image pair can be made in close proximity, farther proximity, or at an intermediate proximity to achieve desired optical, mechanical and/or visual results.
    Type: Application
    Filed: March 29, 2010
    Publication date: September 30, 2010
    Applicant: MICROCONTINUUM, INC.
    Inventors: Vivian K. Walworth, W. Dennis Slafer
  • Patent number: 4663274
    Abstract: A method for forming photosensitive silver halide grains which comprises coalescing a fine-grain silver halide emulsion layer carried on a substantially planar surface of a support.
    Type: Grant
    Filed: April 1, 1985
    Date of Patent: May 5, 1987
    Assignee: Polaroid Corporation
    Inventors: Warren D. Slafer, Vivian K. Walworth
  • Patent number: 4359526
    Abstract: A method for forming a photosensitive element comprising a plurality of single effective silver halide grains in a predetermined spaced array which comprises coalescing a fine-grain silver halide emulsion in a plurality of predetermined spaced depressions in a surface, wherein said coalescence is carried out by contacting said fine-grain emulsion with a silver halide solvent in the vapor phase.
    Type: Grant
    Filed: September 2, 1981
    Date of Patent: November 16, 1982
    Assignee: Polaroid Corporation
    Inventor: Vivian K. Walworth
  • Patent number: 4353977
    Abstract: A photosensitive silver halide element comprising a support carrying photosensitive silver halide grains in a predetermined spaced array is prepared by a method which comprises at least partially coalescing fine-grain silver halide in a plurality of spaced depressions in a hydrophobic layer, superposing said layer with a hydrophilic layer during or subsequent to said coalescence, and then separating said hydrophilic layer and said hydrophobic layer whereby said coalesced silver halide grains are retained on said hydrophilic layer in a pattern corresponding substantially to the pattern of said spaced depressions.
    Type: Grant
    Filed: September 2, 1981
    Date of Patent: October 12, 1982
    Assignee: Polaroid Corporation
    Inventors: Arthur M. Gerber, Warren D. Slafer, Vivian K. Walworth
  • Patent number: 4352874
    Abstract: A fine-grain emulsion in a plurality of predetermined spaced depressions is coalesced to form, in situ, a plurality of single effective silver halide grains in a predetermined spaced array by the action of a solution of a silver halide solvent containing a dissolved silver salt.
    Type: Grant
    Filed: September 2, 1981
    Date of Patent: October 5, 1982
    Assignee: Polaroid Corporation
    Inventors: Edwin H. Land, Vivian K. Walworth
  • Patent number: 4340666
    Abstract: Photosensitive silver halide emulsion layers are formed by mixing a solution of a water-soluble complex of silver ion with a polymeric thickening agent, applying the thus formed mixture to a permeable substrate and crystallizing photosensitive silver halide grains therein by decomplexation of said silver halide complex within the layer.
    Type: Grant
    Filed: February 17, 1981
    Date of Patent: July 20, 1982
    Assignee: Polaroid Corporation
    Inventor: Vivian K. Walworth
  • Patent number: 4165986
    Abstract: Photosensitive substituted-halide silver halide emulsions are prepared by substituting bromide and/or iodide anions for part of the chloride anions of a silver iodochloride emulsion. These substituted-halide silver halide emulsions are particularly useful as negative working silver halide emulsions in diffusion transfer processes.
    Type: Grant
    Filed: July 27, 1973
    Date of Patent: August 28, 1979
    Assignee: Polaroid Corporation
    Inventor: Vivian K. Walworth
  • Patent number: 4153462
    Abstract: The present invention is directed to a method for forming the crystals of a photographic silver halide emulsion which comprises crystallizing silver halide grains from a solution of a water-soluble complex of silver halide complexed with excess halide ions. The crystals may be sensitized before the binder is added.
    Type: Grant
    Filed: August 14, 1975
    Date of Patent: May 8, 1979
    Assignee: Polaroid Corporation
    Inventors: Arthur M. Gerber, Vivian K. Walworth
  • Patent number: 4102759
    Abstract: An electrolytic cell for generating silver ions and halide ions for the formation of photosensitive silver halide grains wherein the anode comprises particulate silver.
    Type: Grant
    Filed: March 7, 1977
    Date of Patent: July 25, 1978
    Assignee: Polaroid Corporation
    Inventors: Arthur M. Gerber, Vivian K. Walworth
  • Patent number: 4102758
    Abstract: An electrolytic cell for generating silver ions and halide ions for the formation of photosensitive silver halide grains wherein the cathode comprises elemental halogen and electrically conductive carbon.
    Type: Grant
    Filed: March 7, 1977
    Date of Patent: July 25, 1978
    Assignee: Polaroid Corporation
    Inventors: Arthur M. Gerber, Vivian K. Walworth
  • Patent number: 4060419
    Abstract: Photosensitive silver halide emulsions are prepared by the precipitation of silver halide grains from silver and halide ions generated by electrolysis.
    Type: Grant
    Filed: April 1, 1976
    Date of Patent: November 29, 1977
    Assignee: Polaroid Corporation
    Inventors: Arthur M. Gerber, Vivian K. Walworth
  • Patent number: 4021825
    Abstract: An adapter for operatively coupling a reflex camera having a preprogrammed automatic cycle of operation to an optical instrument such as a microscope or telescope. The adapter includes mechanisms which permit the operator to selectively modify the preprogrammed cycle of operation for the purpose of making extended time exposures or allowing vibrations induced by the movement of a camera reflex member to subside prior to initiating film exposure.
    Type: Grant
    Filed: May 15, 1975
    Date of Patent: May 3, 1977
    Assignee: Polaroid Corporation
    Inventors: John J. McCann, Mary A. McCann, William T. Plummer, Myron A. Seiden, Vivian K. Walworth
  • Patent number: 3976368
    Abstract: The invention is an optical element, one version of which is useful for operating an automatic exposure control of a self-contained camera coupled to a microscope without detracting from the brightness of the magnified image to be recorded on the camera's film format. The article includes three reflecting surfaces arranged to extract a small part of the light emerging from the microscope's eyepiece and direct it into the photodetector of the automatic exposure control. A lensrefracts the light, after the third reflection, to improve the distribution of the light onto the camera's photodetector. The article is suitable for manufacture as a homogeneous molding of transparent plastic.
    Type: Grant
    Filed: December 4, 1974
    Date of Patent: August 24, 1976
    Assignee: Polaroid Corporation
    Inventors: Mary Conlin McCann, William T. Plummer, Vivian K. Walworth
  • Patent number: 3941600
    Abstract: Silver halide emulsion layers are formed by applying a water-soluble silver halide complex to a gelled substrate, and treating to decomplex to form silver halide crystals therein.
    Type: Grant
    Filed: July 27, 1973
    Date of Patent: March 2, 1976
    Assignee: Polaroid Corporation
    Inventor: Vivian K. Walworth