Patents by Inventor Charles F. Feldman

Charles F. Feldman 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).

  • Manufactured glass laminates
    Patent number: 4204029
    Abstract: Laminated glass structures are prepared by bonding together at least two glass sheets with an ethylene polymer containing substituent carboxylic groups and, optionally, amide and/or ester groups.
    Type: Grant
    Filed: December 22, 1976
    Date of Patent: May 20, 1980
    Assignee: Gulf Oil Corporation
    Inventors: Robert L. Batchelor, Charles F. Feldman
  • Process for the production of pyruvic acid
    Patent number: 4136111
    Abstract: An improved process for forming pyruvic acid comprising reacting a salt of bitartrate, e.g. potassium bitartrate, with concentrated sulfuric acid at an elevated temperature to produce pyruvic acid. The process preferably utilizes approximately equal molar quantities of the potassium bitartrate and sulfuric acid and the reaction is preferably carried out at a temperature of approximately 160.degree. C to approximately 270.degree. C for a period of approximately one half hour to one hour.
    Type: Grant
    Filed: November 2, 1976
    Date of Patent: January 23, 1979
    Assignee: Hill Brothers Chemical Company, Inc.
    Inventor: Charles F. Feldman