Patents Assigned to Sun Pharmaceutical Corp.
  • Ultraviolet resistant sunscreen compositions
    Patent number: 5208011
    Abstract: A sunscreen composition for leaving a protective film on skin, comprising a UVB light absorbing sunscreen, a polymer vehicle, an oil-soluble solubilizer, and alkoxylated castor oil as an emulsifier. The protective film has an aggregate cohesive energy of from about 80 to about 150 calories per cc, preferably 100 to 115 calories/cc. The film is water resistant, unusually stable to UV radiation, nonirritating, and physically protective.
    Type: Grant
    Filed: September 4, 1990
    Date of Patent: May 4, 1993
    Assignee: Sun Pharmaceutical Corp.
    Inventor: Christopher D. Vaughan