Patents by Inventor Maria N. Schwencke

Maria N. Schwencke 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).

  • (3,4-c)-Pyrido psoralens, process of preparation, application in cosmetology and therapeutics, and cosmetological and pharmaceutical composition with them
    Patent number: 4464354
    Abstract: Monofunctional psoralen derivatives having the general formula ##STR1## wherein R represents a hydrogen atom, a lower alkyl group having from 1 to 4 atoms, preferably a methyl radical, or a lower alkoxy radical having from 1 to 4 carbon atoms, preferably a methoxy radical are described. The derivatives are photobiologically active and are useful in photochemical therapy and in cosmetics.
    Type: Grant
    Filed: February 24, 1983
    Date of Patent: August 7, 1984
    Assignee: Institut National de la Sante et de la Recherche Medicale
    Inventors: Emile Bisagni, Louis Dubertret, Jacqueline Moron, Dietrich Averbeck, Dora Papadopoulo, Jocelyne Blais, Paul Vigny, Maria N. Schwencke, Ethel Moustacchi, Silvano Nocentini, Francois Zajdela