Patents by Inventor Louis R. Kray

Louis R. Kray 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).

  • Heat exchanger antifoulant
    Patent number: 4435273
    Abstract: Disclosed is a process for reducing the fouling in a heat exchanger in which a hydrocarbon stream is heated or cooled as it passes through the heat exchanger. From 1 to 500 parts per million of an alkylamino alkylphenol is added to the stream to reduce fouling.
    Type: Grant
    Filed: July 23, 1982
    Date of Patent: March 6, 1984
    Assignee: Chevron Research Company
    Inventors: Richard L. Ferm, Louis R. Kray
  • Heat exchanger antifoulant
    Patent number: 4397737
    Abstract: Disclosed is a process for reducing the fouling in a heat exchanger in which a hydrocarbon stream is heated or cooled as it passes through the heat exchanger. From 1 to 500 parts per million of poly(oxyalkylene) carbamate is added to the stream to reduce fouling.
    Type: Grant
    Filed: February 26, 1982
    Date of Patent: August 9, 1983
    Assignee: Chevron Research Company
    Inventor: Louis R. Kray
  • Esterification of orthophthalic acid with olefin
    Patent number: 3948974
    Abstract: Diesters of orthophthalic acid are obtained by reacting an olefin of at least six carbon atoms with orthophthalic acid in the presence of a boron trifluoride catalyst.
    Type: Grant
    Filed: August 20, 1969
    Date of Patent: April 6, 1976
    Assignee: Chevron Research Company
    Inventor: Louis R. Kray