Patents by Inventor Richard Siedl

Richard Siedl 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).

  • Copolymers based on maleic acid derivatives and vinyl monomers, their production and application
    Patent number: 5369198
    Abstract: Copolymers which are composed essentially of the structural elements ##STR1## and, if necessary, ##STR2## The copolymers can be employed as dispersing agents for inorganic or organic substances, especially as a plasticiser for hydraulic binders.
    Type: Grant
    Filed: February 1, 1994
    Date of Patent: November 29, 1994
    Assignees: Chemie Linz Gesellschaft m.b.H, Holderchem Holding AG
    Inventors: Gerhard Albrecht, Hubert Leitner, Rudolf Lindenberger, Richard Siedl, Christian Werenka, Willi Suter