Patents by Inventor Alfred Shihata

Alfred Shihata 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).

  • Vaginal compositions combining a spermicidal agent and a peroxygen compound
    Patent number: 5778886
    Abstract: The invention provides vaginal compositions suitable for preventing conception and transmission of sexually transmitted diseases comprising a spermicidal agent and a peroxygen compound. Preferably, the spermicidal agent is nonoxynol-9. Also preferably, the peroxygen compound is hydrogen peroxide. The spermicidal agent is preferred at about 3% by weight. The peroxygen compound is also preferred at about 3% by weight. In other aspects, the invention provides these compositions at a pH of about 4, preferably about 3 or lower. This pH is favorably maintained with lactic acid. These compositions are preferably encapsulated in the form of a gel.
    Type: Grant
    Filed: February 27, 1996
    Date of Patent: July 14, 1998
    Inventor: Alfred Shihata