Patents by Inventor Hans-Jurgen Reck

Hans-Jurgen Reck 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).

  • Patent number: 4822616
    Abstract: A vaginal ring comprises a supporting ring 1 free of active agent. A layer 2, which contains an active agent such as a steroid, is applied on its outer rim, optionally in a continuous groove provided in the supporting ring. This layer, in turn, is coated with a layer 3 devoid of active ingredient. All components preferably comprise an LTV silicone elastomer. The ratio of the thickness of the layer 2, containing an active agent, to the layer 3, free of active agent, is about 5-50:1. As a result, a long-term and uniform release rate is achieved for the active agent.
    Type: Grant
    Filed: February 13, 1987
    Date of Patent: April 18, 1989
    Assignee: Schering Aktiengesellschaft
    Inventors: Ingfried Zimmermann, Fred Windt, Hans-Jurgen Reck