Patents by Inventor Annegrette Hoffmann

Annegrette 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).

  • Sealing bag for a transdermal therapeutic system
    Patent number: 6224900
    Abstract: A therapeutic system for supplying active substances to the skin consists of a backing layer remote from the skin, with at least one active substance depot. The depot may consist of a fluid active substance or a fluid composition comprising an active substance delivery control matrix. There is also included an adhesive fixing device for fixing the therapeutic system on the skin. The therapeutic system is characterized in that the active substance depots (14) consist of at least one adjuvant having a supporting and distributing function by being provided with a planar textile material completely surrounded by matrix (12).
    Type: Grant
    Filed: March 9, 1998
    Date of Patent: May 1, 2001
    Assignee: LTS Lohmann Therapie-Systeme GmbH & Co. KG
    Inventor: Annegrette Hoffmann