Patents by Inventor Ronald S. Rock

Ronald S. Rock 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).

  • Photoresponsive sunscreen compositions
    Patent number: 6280711
    Abstract: The disclosure provides sunscreen compositions comprising a carrier for topical administration and photoresponsive first sunscreen agents which are capable of undergoing intramolecular photorearrangements to form second sunscreen agents. The second sunscreen agents absorb more ultraviolet radiation than the first sunscreen agents. The sunscreen composition may comprise the prephotorearrangement first sunscreen agent, the photorearranged second sunscreen agent, a combination of the first and second sunscreen agents, or any of the above in combination with a known sunscreen agent.
    Type: Grant
    Filed: November 8, 1999
    Date of Patent: August 28, 2001
    Assignee: California Institute of Technology
    Inventors: Ronald S. Rock, Michael H. B. Stowell
  • Photoresponsive sunscreen compositions
    Patent number: 6022529
    Abstract: The disclosure provides sunscreen compositions comprising a carrier for topical administration and photoresponsive first sunscreen agents which are capable of undergoing intramolecular photorearrangements to form second sunscreen agents. The second sunscreen agents absorb more ultraviolet radiation than the first sunscreen agents. The sunscreen composition may comprise the prephotorearrangement first sunscreen agent, the photorearranged second sunscreen agent, a combination of the first and second sunscreen agents, or any of the above in combination with a known sunscreen agent.
    Type: Grant
    Filed: August 6, 1997
    Date of Patent: February 8, 2000
    Assignee: California Institute of Technology
    Inventors: Ronald S. Rock, Michael H. B. Stowell
  • Photolabile linkers and probes
    Patent number: 5767288
    Abstract: The invention relates to dithiane adducts of substituted benzoins and substituted benzoins derived therefrom each of which are useful as protecting groups, photolabile linkers, and fluorescent probes.
    Type: Grant
    Filed: January 5, 1996
    Date of Patent: June 16, 1998
    Assignee: California Institute of Technology
    Inventors: Ronald S. Rock, Michael H. B. Stowell, Sunney I. Chan