The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 12, 2014
Filed:
Sep. 22, 2011
Hamed Lakrout, Midland, MI (US);
Ben W Schaefer, Bay City, MI (US);
Michael D. Williams, Midland, MI (US);
Hamed Lakrout, Midland, MI (US);
Ben W Schaefer, Bay City, MI (US);
Michael D. Williams, Midland, MI (US);
Dow Global Technologies LLC, Midland, MI (US);
Abstract
The method forms forming an open-network polishing pad useful for polishing magnetic, semiconductor and optical substrates. The method provides a polymer sheet or film of a curable polymer and exposes the polymer sheet or film to an energy source to create an exposure pattern in the polymer sheet or film. The exposure pattern having elongated sections exposed to the energy source. After attaching the polymer sheet or film to an open-network substrate, the method removes polymer adjacent from the exposed polymer sheet or film of the intermediate structure with a solvent. This forms elongated channels through the polymer sheet or film in a texture pattern that corresponds to the exposure pattern with the open-network supporting the polymer. The elongated channels extending through the thickness of the polymer sheet or film to form the open-network polishing pad.