Patents by Inventor Hans-Rainer Hoffmann

Hans-Rainer Hoffmann 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).

  • Transdermal therapeutical system comprising physostigmine as active component and process for the production thereof
    Patent number: 5089267
    Abstract: The present invention relates to a transdermal therapeutical system for the administration of physostigmine to the skin via a cover layer which is impermeable to active substances, a pressure-sensitive adhesive reservoir layer, and optionally a removable protective layer, said reservoir layer consisting of 10-90% polymeric material selected from the groups consisting of block copolymers on the basis of styrene and 1,3-dienes, polyisobutylenes, polymers on the basis of acrylates and/or methacrylates and esters of hydrogenated colophonium, 0-30%-wt softeners on the basis of hydrocarbons and/or esters, and 0.1-20%-wt physostigmine.
    Type: Grant
    Filed: December 18, 1989
    Date of Patent: February 18, 1992
    Assignees: LTS Lohmann Therapie-Systeme GmbH & Co. KG, Klinge Pharma GmbH
    Inventors: Thomas Hille, Hans-Rainer Hoffmann, Hans-Joachim Huber, Axel Koch, Gerhard Schneider, Fritz Stanislaus