Patents by Inventor Heinz Friedrich Knigge

Heinz Friedrich Knigge 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).

  • Oil filter
    Patent number: 4111814
    Abstract: Filter for separating solid particles from an oil in which a vessel is divided into three compartments by a pair of tube sheets, with a plurality of hollow mesh screen filter cartridges, having open tops and bottoms being supported between the tube sheets. Oil to be filtered is introduced into the top compartment and flows into the interior of the cartridge and is filtered by radial flow through the cartridge into the intermediate compartment. The oil flow washes solids from the screen through the open bottom and into the bottom compartment.
    Type: Grant
    Filed: January 21, 1977
    Date of Patent: September 5, 1978
    Assignee: The Lummus Company
    Inventor: Heinz Friedrich Knigge