Patents by Inventor Aart Muehlenbruch

Aart Muehlenbruch 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).

  • Stable topical retinoid compositions
    Patent number: 5690923
    Abstract: Compositions for topical application to the skin are provided, which compositions comprise a retinoid in an aqueous vehicle, and further contain at least one non-ionic surfactant, wherein the non-ionic surfactant is the crystallization-preventing and stabilizing agent for said retinoid and is selected from the group consisting of polyoxyethylene mono fatty alcohol ethers, polyoxyethylene glyceryl fatty acid triesters and ethyleneoxide/propyleneoxide block copolymers.
    Type: Grant
    Filed: December 28, 1995
    Date of Patent: November 25, 1997
    Assignee: Yamanouchi Europe B.V.
    Inventors: Tom DeVringer, Antoon Van Harrewijn, Aart Muehlenbruch