Patents by Inventor Jean S. Y. Lew

Jean S. Y. Lew 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).

  • Fluorinated sulfonamides
    Patent number: 4163754
    Abstract: Novel fluorinated sulfonamides useful as water-, oil- and soil repellency agents may be prepared by reacting a C.sub.12-30 fatty acid, polyamine and a sulfonyl halide in the presence of an organic or inorganic weak base.
    Type: Grant
    Filed: January 18, 1978
    Date of Patent: August 7, 1979
    Assignee: ICI Americas Inc.
    Inventor: Jean S. Y. Lew