Patents by Inventor Russel A. Brezler, III

Russel A. Brezler, III 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).

  • Low friction toothbrush
    Patent number: 6871374
    Abstract: A brush for use in cleaning teeth, and a method for cleaning teeth using such brush, in which bristles are used in the brush that are prepared from a composition containing a thermoplastic polymeric resin in admixture with a slip agent.
    Type: Grant
    Filed: March 22, 2004
    Date of Patent: March 29, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Russel A. Brezler, III, Susan E. Loudin, Charles F. Nelson, Kwai-Yung Benjamin Su
  • Natural bristle replacement for cosmetic and other brushes
    Patent number: 5976692
    Abstract: Synthetic monofilaments or bristles made from a thermoplastic elastomeric composition containing an aluminum silicate. The synthetic monofilaments or bristles possess properties, such as stiffness, similar to those of natural bristles such as goat hair, but without the unwanted side effects of natural bristles or prior synthetic bristles. A method for making such synthetic monofilaments or bristles of various lengths and diameters having a desirable wavy appearance is achieved by post-conditioning or mechanically crimping the monofilaments. The synthetic monofilaments or bristles are capable of being formed into brushes of all types and for all uses, especially as cosmetic brushes.
    Type: Grant
    Filed: November 21, 1997
    Date of Patent: November 2, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Russel A. Brezler, III, Robert L. Rackley, deceased