Patents by Inventor Walter A. Yarbrough

Walter A. Yarbrough 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 with rapidly curable adhesives
    Patent number: 5527368
    Abstract: A coated abrasive having improved properties of grinding performance and brittleness, said abrasive comprising a backing and an abrasive coating adhered thereon wherein the abrasive coating comprises a suspension containing lapping size abrasive grains and a binder, said binder containing a diacrylated monomer and a triacrylated or higher acrylated monomer.
    Type: Grant
    Filed: May 17, 1989
    Date of Patent: June 18, 1996
    Assignee: Norton Company
    Inventors: Stanley J. Supkis, Eugene Zador, Sitaramaiah Ravipati, Richard A. Romano, Walter A. Yarbrough
  • Alumina sol-gel fiber
    Patent number: 5514631
    Abstract: An alumina based ceramic fiber having submicron sized alpha alumina crystals and a density of at least 95% theoretical is obtained from a sol-gel process.
    Type: Grant
    Filed: December 19, 1994
    Date of Patent: May 7, 1996
    Assignee: Norton Company
    Inventors: Thomas E. Cottringer, Ronald H. van de Merwe, Ralph Bauer, Walter A. Yarbrough
  • Abrasive material and method
    Patent number: 5395407
    Abstract: The hardness and microstructure of aluminous abrasives produced from alumina gels are enhanced by introduction of seed material as by wet vibratory milling of the material with alumina media, or by the direct addition of very fine alpha alumina particles in the amount of 1% or less.
    Type: Grant
    Filed: October 4, 1988
    Date of Patent: March 7, 1995
    Assignee: Norton Company
    Inventors: Thomas E. Cottringer, Ronald H. van de Merwe, Ralph Bauer, Walter A. Yarbrough
  • Abrasive material and method
    Patent number: 5383945
    Abstract: The hardness and microstructure of aluminous abrasives produced from alumina gels are enhanced by introduction of seed material as by wet vibratory milling of the material with alumina media, or by the direct addition of very fine alpha alumina particles in the amount of 1% or less.
    Type: Grant
    Filed: November 29, 1989
    Date of Patent: January 24, 1995
    Assignee: Norton Company
    Inventors: Thomas E. Cottringer, Ronald H. van de Merwe, Ralph Bauer, Walter A. Yarbrough
  • Coated abrasive
    Patent number: 4867760
    Abstract: Stitch bonded fabric or other arrays of substantially coplanar and coparallel yarns non-interlaced with other yarns are employed to reinforce the backing for coated abrasive products. A preferred construction with continuous filament polyester yarns is described, together with the cloth finishing process employed to prepare a backing for coating with abrasive grain. The product is particularly suitable for making coated abrasive belts.
    Type: Grant
    Filed: August 17, 1984
    Date of Patent: September 19, 1989
    Assignee: Norton Company
    Inventor: Walter A. Yarbrough