Patents by Inventor William David Watson

William David Watson 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 fluids having low freeze points
    Patent number: 4054533
    Abstract: Heat transfer fluids consisting essentially of about, by weight:A. 20 to about 40 percent diphenyl ether;B. 40 to about 60 percent of a 2-biphenylylphenyl ether (2-bippe) and 4-biphenylylphenyl ether (4-bippe) mixture at a 2-bippe:4-bippe weight ratio of at least about 2:1; andC. 12 to about 25 percent of a polyphenylphenol mixtureExhibit freeze points of -18.degree. C or less. These heat transfer fluids have excellent fluidity over a broad temperature range and display unexpectedly good thermal stability.
    Type: Grant
    Filed: June 24, 1976
    Date of Patent: October 18, 1977
    Assignee: The Dow Chemical Company
    Inventor: William David Watson