Patents by Inventor Benjamin R. Robles

Benjamin R. Robles 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).

  • Polycarboxylic acid derivatives and uses
    Patent number: 4533466
    Abstract: Mercapto polycarboxylic acids, especially the trithiocarbonate derivatives thereof and alkali metal salts, are employed as treating agents in mineral recovery operations.
    Type: Grant
    Filed: October 31, 1984
    Date of Patent: August 6, 1985
    Assignee: Phillips Petroleum Company
    Inventors: Clarence R. Bresson, Benjamin R. Robles, Robert M. Parlman
  • Polycarboxylic acid derivatives and uses
    Patent number: 4482480
    Abstract: Mercapto polycarboxylic acids, especially the trithiocarbonate derivatives thereof and alkali metal salts, are employed as treating agents in mineral recovery operations.
    Type: Grant
    Filed: March 30, 1983
    Date of Patent: November 13, 1984
    Assignee: Phillips Petroleum Company
    Inventors: Clarence R. Bresson, Robert M. Parlman, Benjamin R. Robles