Patents by Inventor John A. Beyrau

John A. Beyrau 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-transfer fluid
    Patent number: 4622160
    Abstract: Wide range heat-transfer fluids can be made by mixing methyl and/or ethyl biphenyls with diethylbenzenes. The fluids can be used at temperatures down to -20.degree. F. (-29.degree. C.).
    Type: Grant
    Filed: October 23, 1985
    Date of Patent: November 11, 1986
    Assignee: The Dow Chemical Company
    Inventors: Gary R. Buske, Terry L. Wenger, John A. Beyrau