Patents by Inventor Levy David Cohen

Levy David Cohen 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).

  • Sunscreens for protection from sun radiation
    Patent number: 6159453
    Abstract: The present invention relates to sunscreen-doped sol-gel materials useful r protecting body tissues, such as skin, nails and hair and other surfaces from sunlight radiation. The sol-gel matrices are transparent to the UV radiation in the range above 250 nm and the doped sunscreen agents are either chemical or physical sunscreens capable of absorbing the UV radiation in the range above 250 nm. Any sunscreen molecule, moiety or particle may be used in the present invention. The sol-gel matrices may be particles in any shape, 0.01-100 microns in diameter, or they may be thin films, thin coatings or in the form of a monolith.
    Type: Grant
    Filed: July 15, 1999
    Date of Patent: December 12, 2000
    Assignee: Yissum Research Development Company of the Hebrew University of Jerusalem
    Inventors: David Avnir, Levy David Cohen