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. 27, 2012
Filed:
Dec. 17, 2008
Applicants:
Scott R. Culler, Burnsville, MN (US);
Dwight D. Erickson, Oakdale, MN (US);
Negus B. Adefris, Woodbury, MN (US);
John T. Boden, White Bear Lake, MN (US);
John D. Haas, Roseville, MN (US);
Inventors:
Scott R. Culler, Burnsville, MN (US);
Dwight D. Erickson, Oakdale, MN (US);
Negus B. Adefris, Woodbury, MN (US);
John T. Boden, White Bear Lake, MN (US);
John D. Haas, Roseville, MN (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B24D 3/00 (2006.01); B32B 5/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
Abrasive particles comprising dish-shaped abrasive particles each having a sidewall; each of the shaped abrasive particles comprising alpha alumina and having a first face and a second face separated by a thickness, t; and wherein either the first face or the second face is recessed or concave.