Patents by Inventor Lotte Schenkel

Lotte Schenkel 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 for active ingredient combinations
    Patent number: 5128124
    Abstract: The present invention relates to a transdermal therapeutic system for the combined administration of oestrogens and gestagens. The therapeutic system consists of:(1) a closed outer layer which is impermeable to the constituents of the active ingredient formulation,(2) a reservoir containing essential constituents of the active ingredient formulation and, optionally, a membrane,(3) an adhesive layer and(4) a peel-off protective layer on the adhesive layer.The system contains an oestrogen derivative in combination with a synthetic gestagen, and an agent that enhances percutaneous absorption.
    Type: Grant
    Filed: February 22, 1991
    Date of Patent: July 7, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Peter Fankhauser, Lotte Schenkel
  • Transdermal therapeutic systems for active ingredient combinations
    Patent number: 4913905
    Abstract: The present invention relates to a transdermal therapeutic system for the combined administration of oestrogens and gestagens. The therapeutic system consists of:(1) a closed outer layer which is impermeable to the constituents of the active ingredient formulation,(2) a reservoir containing essential constitutents of the active ingredient formulation and, optionally, a membrane,(3) an adhesive layer and(4) a peel-off protective layer on the adhesive layer.The system contains an oestrogen derivative in combination with a synthetic gestagen, and an agent that enhances percutaneous absorption.
    Type: Grant
    Filed: March 25, 1988
    Date of Patent: April 3, 1990
    Assignee: Ciba-Geigy Corporation
    Inventors: Peter Fankhauser, Lotte Schenkel
  • Bandage
    Patent number: D278363
    Type: Grant
    Filed: March 9, 1982
    Date of Patent: April 9, 1985
    Assignee: ALZA Corporation
    Inventors: Lotte Schenkel, Peter Fankhauser