Patents by Inventor Walter Knoor

Walter Knoor 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).

  • Abrasion resistant rails and/or rail wheels, and process for producing the same
    Patent number: 4230488
    Abstract: Abrasion resistant rails or rail wheels formed from a steel alloy having between 0.02 to 0.35 percent by weight of lead or bismuth, and a process for the production of the same comprising alloying 0.02 to 0.35 percent by weight of lead or bismuth with a rail or rail wheel steel.
    Type: Grant
    Filed: June 30, 1978
    Date of Patent: October 28, 1980
    Assignee: Fried. Krupp Huttenwerke AG
    Inventors: Wilhelm Heller, Walter Knoor, Reinhard Schweitzer