Patents by Inventor Rolf Willich

Rolf Willich 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).

  • Tabletting machine
    Patent number: 4259049
    Abstract: A tabletting machine having upper and cooperating lower plungers surrounded at their leading end portions with clearance by elastic cuffs; gas is blown through these cuffs towards the front ends of the plungers to prevent the deposition of dust on the plunger surfaces.
    Type: Grant
    Filed: March 28, 1980
    Date of Patent: March 31, 1981
    Assignee: Wilhelm Fette GmbH
    Inventor: Rolf Willich