Patents by Inventor Peter Breitbach

Peter Breitbach 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).

  • Filter material in the form of flexible leaves or sheets and a method of producing such material
    Patent number: 5223139
    Abstract: A flexible fleece-like filter material is provided wherein in a matrix-like basic framework consisting of synthetic or natural fibres, ultra-finely fibrillated fibres and/or inert porous particles are incorporated as a filter medium, the filter medium forming, anchored in the matrix, chain structures provided with a cationic or anionic charge or possibly charged with other substances which influence the filtering properties or with immobilised cells and/or catalysts. A fleece is formed with a thickness of between 0.5 mm and 5 mm and preferably up to 2 mm, which is flexible and which can even be pleated. This filter material can be produced by a simple method without harming the environment.
    Type: Grant
    Filed: April 9, 1990
    Date of Patent: June 29, 1993
    Assignee: Seitz-Filter-Werke Theo & Geo Seitz GmbH & Co.
    Inventors: Helmut Ruger, Gerd Ritter, Hans Hofmann, Peter Breitbach