Patent ID: 6182323
Filing Date: 2001-02-06
Classification: B08B,Y10T

Abstract:
An out of the box ultraclean brush, said ultraclean brush device comprising:an elongated porous polymeric member comprising an outer surface for removing residual particles from a surface of a substrate;wherein said elongated porous member comprises a polyvinyl alcohol bearing compound, said elongated porous member having a calcium ion impurity concentration of less than about 0.05 part per million, and said elongated porous member having a sodium impurity concentration of less than about 0.10 part per million, and said elongated porous member having a sulfate impurity concentration of less than about 0.20 part per million;wherein said elongated porous member being substantially free from any loose portions of said porous polymeric member greater than about 0.5 micron in size.