Patents by Inventor Ronald O. Zembke, deceased

Ronald O. Zembke, deceased 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).

  • Abrasive filaments comprising abrasive-filled thermoplastic elastomer, methods of making same, articles incorporting same and methods of using said articles
    Patent number: 5443906
    Abstract: An abrasive filament, including a thermoplastic elastomer having abrasive particles dispersed and adhered therein, exhibits improved life over previously known abrasive-filled polymeric filaments. Methods of making abrasive filaments of the invention, articles including the abrasive filaments, and methods of abrading surfaces using the abrasive articles of the invention are also described.
    Type: Grant
    Filed: December 8, 1994
    Date of Patent: August 22, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Richard M. Pihl, Duane J. Hayes, Loren L. Barber, Jr., Dennis G. Welygan, R. Eugene Hardwick, Ronald O. Zembke, deceased