Patents by Inventor Ursula Hildegard Klein

Ursula Hildegard Klein 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 therapeutic system based on polyacrylate-contact-bonding adhesives without functional groups
    Publication number: 20040241219
    Abstract: The invention relates to a transdermal therapeutic system (TTS) consisting of a rear layer, a protective layer and an active-substance-containing polymer layer. The polymer matrix comprises a polyacrylate which contains an extremely reduced number of functional groups. In one particular embodiment, the polyacrylate is free from hydroxyl groups and/or carboxyl groups.
    Type: Application
    Filed: February 20, 2004
    Publication date: December 2, 2004
    Inventors: Thomas Hille, Frank Theobald, Ursula Hildegard Klein