Patents by Inventor Engelbert Dremmel

Engelbert Dremmel 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 for producing coffee and coffee machine for carrying out the method
    Patent number: 4457216
    Abstract: Apparatus for obtaining strong aromatic coffee having a scalding chamber within a cylinder for receiving coffee powder between separately controlled upper and lower pistons, a hydraulic piston for causing the upper piston to close the scalding chamber, a passage for introducing hot water into the closed chamber through the upper piston so as to cause the coffee powder to swell-up, a separate hydraulic piston for causing the lower piston to compress the swollen coffee, and a passage for draining off the coffee so formed through the lower piston.
    Type: Grant
    Filed: May 20, 1982
    Date of Patent: July 3, 1984
    Assignee: Kurt Rost
    Inventor: Engelbert Dremmel