Patents by Inventor Thomas F. Preczewski

Thomas F. Preczewski 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).

  • Wheel for in-line roller skates
    Patent number: 5567019
    Abstract: A wheel construction generally consisting of a hub section formed of a thermoplastic polyurethane material having a first durometer hardness and a rim section formed of a thermoplastic polyurethane material having a second durometer hardness less than the first durometer hardness, molded onto the hub section to form a molecularly adhered, integral hub and rim structure.
    Type: Grant
    Filed: September 23, 1994
    Date of Patent: October 22, 1996
    Assignee: U.S. Farathane Corporation
    Inventors: Irfan F. Raza, Thomas F. Preczewski, Ronald D. Walther