Patents by Inventor Johann Claus Grapengiesser

Johann Claus Grapengiesser 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).

  • Apparatus for batchwise feeding of powders or particles
    Patent number: 4023713
    Abstract: Apparatus for batchwise feeding of powders or other particulate materials from a pressurized supply vessel with a sealable discharge orifice including a movable sealing-and-metering member and a seal against which it seals during periods of non-discharge.
    Type: Grant
    Filed: October 3, 1975
    Date of Patent: May 17, 1977
    Assignee: Eisenwerk-Gesellschaft Maximilianshutte mbH
    Inventors: Karl Brotzmann, Hans Georg Fassbinder, Paul Gerhard Mantey, Johann Claus Grapengiesser, Alfred Hansen