Patents by Inventor Donald N. DeMott

Donald N. DeMott 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).

  • Drilling fluid containing crosslinked polysaccharide derivative
    Patent number: 4257903
    Abstract: A drilling fluid having extremely desirable physical properties which comprises an aqueous solution of a hydroxyalkyl polysaccharide derivative and a water soluble ionic aluminum crosslinking agent, preferably sodium aluminate.
    Type: Grant
    Filed: October 19, 1978
    Date of Patent: March 24, 1981
    Assignee: The Dow Chemical Company
    Inventors: Clare H. Kucera, Donald N. DeMott