Patents Examined by Shantcoe McDonald
  • Abrasive article with separately formed front surface protrusions containing a grinding aid and methods of making and using
    Patent number: 6312315
    Abstract: An abrasive article including (i) a first backing, (ii) a plurality of protrusions attached to the first surface of the first backing and including a grinding aid, wherein the first surface of the first backing is contoured by the protrusions so as to define a plurality of peaks and valleys, and (iii) a coating of abrasive particles adhered to the contoured first surface of the first backing so as to cover at least a portion of both the peaks and the valleys.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: November 6, 2001
    Assignee: 3M Innovative Properties Company
    Inventor: John J. Gagliardi