Patents by Inventor Frederick R. Nyman

Frederick R. Nyman 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).

  • Video disc processing
    Patent number: 4472337
    Abstract: Video discs are cleaned with a water-based solution to remove water soluble salts from the surface of the discs, thereby reducing the moisture sensitivity of the discs.
    Type: Grant
    Filed: November 7, 1979
    Date of Patent: September 18, 1984
    Assignee: RCA Corporation
    Inventors: Robert H. Huck, Frederick R. Nyman, David A. Berry
  • Drying process for video discs
    Patent number: 4383961
    Abstract: Video discs are dried by first spraying the surface with liquid fluorocarbon to remove water and heating the disc so as to prevent water condensation during evaporation of the fluorocarbon, preferably in a fluorocarbon vapor.
    Type: Grant
    Filed: July 7, 1980
    Date of Patent: May 17, 1983
    Assignee: RCA Corporation
    Inventors: Frederick R. Nyman, Barry Stevens, Lincoln Ekstrom
  • High density information disc processing
    Patent number: 4327048
    Abstract: High density information discs that have been compression molded from a conductive carbon-containing polyvinylchloride molding composition are cleaned with a water based solution to remove water soluble salts from the surface of the disc, followed by a high temperature aqueous wash wherein the temperature is from about 110.degree. to about 130.degree. F. These discs have improved environmental stability.
    Type: Grant
    Filed: January 14, 1981
    Date of Patent: April 27, 1982
    Assignee: RCA Corporation
    Inventors: Frederick R. Nyman, Barry Stevens, James A. Calamari, Jr.
  • Information record stampers
    Patent number: 4262875
    Abstract: Video disc nickel stampers are coated with a very thin, e.g., 100-250 angstroms, non-grainy layer of chromium which imparts increased scratch resistance to carbon-filled polyvinylchloride resins during compression molding.
    Type: Grant
    Filed: August 17, 1979
    Date of Patent: April 21, 1981
    Assignee: RCA Corporation
    Inventors: Frederick R. Nyman, Thomas E. Smith