Patents by Inventor Gunter Tews

Gunter Tews 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).

  • Crosslinking powder lacquers of polyesters
    Patent number: 4148989
    Abstract: A powder lacquer composition comprising a hydroxyl group containing polyester resin which is solid at room temperature and, as a crosslinking agent, a titanium chelate which is solid at room temperature.
    Type: Grant
    Filed: March 11, 1977
    Date of Patent: April 10, 1979
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Gunter Tews, Helmut Wulff, Gerhard Schade
  • Heat hardenable powder coatings based on polyester resins containing carboxyl groups
    Patent number: 4140728
    Abstract: A heat hardenable powder coating composition comprising a carboxyl group containing polyester resin and a polyepoxide compound and a catalyst said catalyst being a titanium and/or zirconium chelate which is solid at room temperature.
    Type: Grant
    Filed: May 5, 1977
    Date of Patent: February 20, 1979
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Siegfried Hahn, Gunter Tews, Helmut Wulff