Patents by Inventor James B. Stake

James B. Stake 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).

  • Substantive sunscreening compositions
    Patent number: 4172122
    Abstract: Water resistant sunscreening compositions are disclosed comprising a cosmetically-acceptable oil base, at least one water-insoluble ultraviolet light absorbing material which is soluble in the oil base, and a water insoluble acrylate polymer having a solubility parameter of 6 to 10 in weak hydrogen bonding solvents. The acrylate polymer serves to bind the ultraviolet light absorber to the skin and render it resistant to removal by water.
    Type: Grant
    Filed: July 29, 1977
    Date of Patent: October 23, 1979
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Donald A. Kubik, James B. Stake