US Patent 7572174 Abrasive grain and grindstone

Patent 7572174 was granted and assigned to JTEKT on August, 2009 by the United States Patent and Trademark Office.

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Date of Patent

August 11, 2009

Patent Application Number

11230886

Date Filed

September 21, 2005

Patent Primary Examiner

Patent abstract

An abrasive grain 1 includes a crystal defect CD in its crystal structure CS. The crystal defect CD is formed by a laser irradiation.

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