A method for making an abrasive material comprising a plurality of hard particles providing the abrasive quality distributed in a retaining matrix for holding the particles in place, the method comprising the steps of placing a mask having openings therein against a carrier capable of supporting a plurality...http://www.google.se/patents/US6478831?utm_source=gb-gplus-sharePatent US6478831 - Abrasive surface and article and methods for making them
