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:
Apr. 08, 2003
Filed:
Nov. 13, 2001
Kazuo Suzuki, Sagamihara, JP;
Fujio Hara, Hachioji, JP;
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
The invention provides an abrasive product having a sheet-like backing including a plurality of concavoconvex portions, the backing also having a first major surface including convex portions and an opposite second major surface including concave portions opposite said convex portions. A coating of a binder is applied over the first major surface and the convex portions. A single layer of a plurality of substantially erectly oriented abrasive particles is bonded to the backing by the binder coating. The abrasive product is made by providing the backing as defined, coating the first major surface with an uncured composition which will cure to provide the binder, applying abrasive particles to the uncured composition coating with an electrostatic sprayer and curing the uncured composition to provide the binder coating.