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:
Oct. 07, 1997
Filed:
Oct. 27, 1994
John E Krech, Eagan, MN (US);
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Abstract
Abrasive articles and methods for their manufacture are described. The articles are screen abrasive articles including a durable backing member having a patterned array of portions thereon arranged around a plurality of openings extending through the backing with the openings comprising between about 20% and about 80% of the total area of the backing. A coating of abrasive material is adhesively affixed to the array of portions on the backing, forming abrasive surfaces arranged around the openings to cooperatively function as a single abrasive surface while the openings allow debris to pass through the article during abrasive applications. In at least one aspect of the invention, the portions of the backing include a plurality of first surface portions and a plurality of second surface portions having surface areas greater than the surface areas of the first portions.