Patents by Inventor Stephen W. Hellens

Stephen W. Hellens 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).

  • Hair growth composition
    Patent number: 5091173
    Abstract: A composition suitable for topical application to mammalian skin or hair comprising an amount of a cell-free supernatant from a culture of dermal papilla cells sufficient to increase hair growth in mammals.
    Type: Grant
    Filed: May 22, 1990
    Date of Patent: February 25, 1992
    Assignee: The University of Dundee
    Inventors: Travis E. J. Buultjens, Stephen W. Hellens, Colin A. B. Jahoda, Roy F. Oliver, Anne P. Withers