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:
Mar. 16, 2021
Filed:
Oct. 12, 2017
3m Innovative Properties Company, St. Paul, MN (US);
Aaron K. Nienaber, Maplewood, MN (US);
Joseph B. Eckel, Vadnais Heights, MN (US);
Thomas J. Anderson, Cottage Grove, MN (US);
Thomas J. Nelson, St. Paul, MN (US);
Mark A. Lukowski, St. Paul, MN (US);
Louis S. Moren, Mahtomedi, MN (US);
Don V. West, Minneapolis, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A method of making magnetizable abrasive particles includes: moistening the outer surfaces of ceramic particles with waterglass to provide moistened ceramic particles. Magnetizable particles are contacted with the moistened ceramic particles to provide powder-coated ceramic particles. The powder-coated ceramic particles are heated to at least a temperature sufficient to bond the magnetizable particles of the powder-coated ceramic particles to the respective ceramic particles thereby providing the magnetizable abrasive particles. On a respective basis, each magnetizable abrasive particle comprises a respective ceramic particle having a magnetizable particles bonded thereto.