Patents by Inventor Timothy J. Trudeau

Timothy J. Trudeau 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).

  • Coated abrasives and methods of preparation
    Patent number: 5924917
    Abstract: Methods for preparing abrasive articles and novel methods of making abrasive articles are presented. One method includes inserting a fibrous material adjacent an interior surface of a drum. A composition comprising an organic binder precursor material is then placed in the drum, and the drum is rotated such that centrifugal forces distribute the composition, including the organic binder precursor material, uniformly about the fibrous material. The composition is exposed to conditions sufficient to solidify the organic binder precursor material such that an endless, flexible, seamless substrate is formed having an outer surface formed adjacent the interior surface of the drum, an inner surface opposite the outer surface and the fibrous material embedded therein. Coated abrasives formed by this method, as well as other methods, are provided wherein an effective amount of a fibrous reinforcing material is engulfed within an organic polymeric binder material.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: July 20, 1999
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Harold W. Benedict, Donna W. Bange, Gary L. Heacox, Timothy J. Trudeau
  • Coated abrasives and methods of preparation
    Patent number: 5681612
    Abstract: Methods for preparing abrasive articles and novel methods of making abrasive articles are presented. One method includes inserting a fibrous material adjacent an interior surface of a drum. A composition comprising an organic binder precursor material is then placed in the drum, and the drum is rotated such that centrifugal forces distribute the composition, including the organic binder precursor material, uniformly about the fibrous material. The composition is exposed to conditions sufficient to solidify the organic binder precursor material such that an endless, flexible, seamless substrate is formed having an outer surface formed adjacent the interior surface of the drum, an inner surface opposite the outer surface and the fibrous material embedded therein. Coated abrasives formed by this method, as well as other methods, are provided wherein an effective amount of a fibrous reinforcing material is engulfed within an organic polymeric binder material.
    Type: Grant
    Filed: February 20, 1996
    Date of Patent: October 28, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Harold W. Benedict, Michael J. Schneider, Donna W. Bange, Gary L. Heacox, Timothy J. Trudeau, Subramanian Krishnan