Patents by Inventor Ernst Ackermann

Ernst Ackermann 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).

  • Method and apparatus for making food pellets
    Patent number: 4817517
    Abstract: For making food pellets, the raw material is first subjected to a first pelleting treatment under pressure, after which the obtained pelleted product is treated at least in part on a pressure pelleter at least for a second time. A feeding arrangement for feeding the material once pelleted to a pelleting die is respectively arranged either within a single pressure pelleter or between two pressure pelleters connected in series for carrying out such process.
    Type: Grant
    Filed: April 20, 1988
    Date of Patent: April 4, 1989
    Assignee: Gebrueder Buehler AG
    Inventors: Jorg Ammann, Hans Peter Schaffner, Ernst Ackermann