Patents by Inventor Hans Wienges

Hans Wienges 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).

  • Regeneration of caffeine-loaded activated carbon with hot water
    Patent number: 4506072
    Abstract: The invention relates to a process for recovering caffeine adsorbed to activated carbon with simultaneous regeneration of the activated carbon in which the caffeine-loaded activated carbon is treated with water at a pressure of at least 86 bar and at a temperature of at least 300.degree. C.
    Type: Grant
    Filed: April 18, 1983
    Date of Patent: March 19, 1985
    Assignee: Hag GF Aktiengesellschaft
    Inventors: Manfred Gehrig, Manfred Barthels, Hans Wienges