Patents by Inventor Sidney M. Leahy

Sidney M. Leahy 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 abrasive product comprising fused zirconia grains and method for abrading iron
    Patent number: 3996702
    Abstract: The cutting rate and useful life of conventional resin bonded coated abrasive products in extremely high pressure abrading operations is significantly increased by using abrasive mineral which consists essentially of fused zirconia. Substantial amounts of diluent may be included, e.g., by blending other less effective abrasive grains with fused zirconia grains or by crushing a hardened co-fusion of alumina and zirconia.
    Type: Grant
    Filed: May 27, 1976
    Date of Patent: December 14, 1976
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Sidney M. Leahy
  • Coated abrasive product containing fused zirconia grains and method for abrading iron
    Patent number: RE31620
    Abstract: The cutting rate and useful life of conventional resin bonded coated abrasive products in extremely high pressure abrading operations is significantly increased by using abrasive mineral which consists essentially of fused zirconia. Substantial amounts of diluent may be included, e.g., by blending other less effective abrasive grains with fused zirconia grains or by crushing a hardened co-fusion of alumina and zirconia.
    Type: Grant
    Filed: March 18, 1981
    Date of Patent: July 3, 1984
    Assignee: Minnesota Mining and Manufacturing Co.
    Inventor: Sidney M. Leahy