Patents by Inventor Patricia A. Warner

Patricia A. Warner 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).

  • Water-soluble, ternary cellulose ethers
    Patent number: 4458068
    Abstract: Novel ternary hydroxyethylhydroxypropylmethylcellulose ethers are disclosed. These ethers have lower cloud points than most cellulose ethers having hydroxyethoxyl substitution and exhibit return cloud points which are approximately the same as their cloud points.
    Type: Grant
    Filed: March 25, 1983
    Date of Patent: July 3, 1984
    Assignee: The Dow Chemical Company
    Inventors: Patricia A. Warner, George K. Greminger, Clark W. Gibson