Patents by Inventor Günther Weicker

Günther Weicker 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).

  • Polyurethane based binder system for the manufacture of foundry cores and molds
    Patent number: 6772820
    Abstract: A cold-box process for preparing a foundry shape, e.g. mold or core, that uses a binder comprising a phenolic resin component and an isocyanate component, wherein the phenolic resin component comprises (a) an alkoxy-modified phenolic resole resin and (b) an oxygen-rich polar, organic solvent component, which contains a fatty acid ester.
    Type: Grant
    Filed: June 26, 2003
    Date of Patent: August 10, 2004
    Assignee: Ashland Inc.
    Inventors: Jean-Claude Roze, Günther Weicker, Diether Koch, Andreas Werner