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:
Dec. 30, 2003
Filed:
Feb. 21, 2001
Paul D. Prichard, Woodbury, MN (US);
Kyung H. Moh, Woodbury, MN (US);
David C. Koskenmaki, St. Paul, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
The invention provides abrasive articles with optimally oriented abrasive particles and a method of making the same. The method involves contacting a substrate with the contact and mating surfaces of tools to provide an embossed substrate with perforated depressions, distributing abrasive particles within the depressions of the substrate, optimally orienting each abrasive particle in the depression containing the abrasive particle, creating a differential pressure between the top surface and the back surface of the embossed, perforated sheet wherein a lower pressure is applied to the back surface to hold the oriented abrasive particles within its depression while removing at least a major portion of abrasive particles not within the depressions from the top surface of the sheet and permanently bonding the abrasive particles in the depressions after they are optimally oriented to provide the abrasive product.