Patent ID: 7351059
Filing Date: 2008-04-01
Classification: A61C,A61K,A61Q,B24C

Abstract:
1. A process for blasting a surface to remove a coating from the surface, the process being of the type which employs an erasing agent comprising a plurality of particles, the process comprising the step of propelling the erasing agent against the surface such that at least some of the particles roll along at least a portion of the surface, wherein an angle of incidence of the particles and the surface is between 0° and 60°, wherein the particles are generally round and have an irregular surface configuration to effect a rolling movement along the surface such that the particles rub and absorb the coating from the surface, and wherein the particles have an average maximum diameter of between 30 and 1000 microns, wherein each particle comprise a precipitate or agglomerate of an insoluble alkali metal carbonate.