Patents by Inventor Peter Herbert Knappe

Peter Herbert Knappe 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).

  • Sanitary rigid shell spiral wound element
    Patent number: 5985146
    Abstract: A novel rigid, nonporous shell for use with a spiral wound membrane filtration element that allows a controlled bypass flow between the outside of the element and the inside of an enclosing pressure housing while maintaining structural mechanical properties and tight tolerances on the outside diameter of the element allowing easy installation and removal of the cartridge.
    Type: Grant
    Filed: July 23, 1997
    Date of Patent: November 16, 1999
    Assignee: TriSep Corporation
    Inventors: Peter Herbert Knappe, Daniel Franklin Quigg, Ronald Paul Magnani