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:
Jun. 11, 2019
Filed:
Dec. 08, 2014
3m Innovative Properties Company, St. Paul, MN (US);
Toshikazu Kasai, Woodbury, MN (US);
John J. Gagliardi, Hudson, WI (US);
Timothy D. Fletcher, Lino Lakes, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A method of making conglomerate abrasive particles includes: providing agglomerate abrasive particles comprising mineral particles in a first vitreous binder; combining the agglomerate abrasive particles with a second vitreous binder material precursor to form precursor conglomerate abrasive particles; and heating the precursor conglomerate abrasive particles to convert the second vitreous binder material precursor into a second vitreous binder, different from the first vitreous binder, thereby forming the conglomerate abrasive particles. The first vitreous binder differs from the second vitreous binder by at least one of: i) elemental composition, or ii) an intrinsic physical property; and wherein the conglomerate abrasive particles can pass through a testing sieve having one-millimeter openings. Conglomerate abrasive particles preparable by the method, and abrasive articles containing them, are also disclosed.