Patents by Inventor Karl D. Schwabe

Karl D. Schwabe 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).

  • Stoppers for injection and infusion bottles coated with plastics having polar molecular groups
    Patent number: 4977027
    Abstract: The use of plastics having polar molecular groups for providing isolating coatings on stoppers for injection and infusion bottles, and coated stoppers for injection and infusion bottles.The use of plastics having polar molecular groups for providing isolating coatings on stoppers for injection and infusion bottles is described.
    Type: Grant
    Filed: August 17, 1988
    Date of Patent: December 11, 1990
    Assignee: Hoechst Aktiengesellschaft
    Inventor: Karl D. Schwabe