Patents by Inventor Bernhard Rauxloh

Bernhard Rauxloh 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).

  • Process for the separation of plastics by flotation
    Patent number: 5248041
    Abstract: The invention relates to a process for separating off polyester plastics from a mixture of polyester, polyvinyl chloride and, if present, other plastics, wherein in the flotation the polyester remains as the residue and the polyvinyl chloride and, if present, other plastics are recovered in floated form, which comprises treating the mixture of plastics with an aqueous alkaline solution and separating off the polyester from polyvinyl chloride and, if present, other plastics by flotation.
    Type: Grant
    Filed: December 20, 1991
    Date of Patent: September 28, 1993
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Gunther Deiringer, Gerhard Edelmann, Bernhard Rauxloh