The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 28, 2001
Filed:
Nov. 08, 1999
Applicant:
Inventors:
Ronald S. Rock, Pasadena, CA (US);
Michael H. B. Stowell, Pasadena, CA (US);
Assignee:
California Institute of Technology, Pasadena, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 7/42 ; A61K 7/44 ; A61K 7/00 ;
U.S. Cl.
CPC ...
A61K 7/42 ; A61K 7/44 ; A61K 7/00 ;
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.