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US Patent 8142891 Dish-shaped abrasive particles with a recessed surface

Patent 8142891 was granted and assigned to 3M on March, 2012 by the United States Patent and Trademark Office.

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Patent attributes

Current Assignee

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Patent Jurisdiction

United States Patent and Trademark Office

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Patent Number

Patent Inventor Names

Scott R. Culler0

John D. Haas0

John T. Boden0

Negus B. Adefris0

Dwight D. Erickson0

Date of Patent

March 27, 2012

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Patent Application Number

123369610

Date Filed

December 17, 2008

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Patent Citations Received

US Patent 12129422 Abrasive articles and methods of forming same

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US Patent 11926780 Shaped abrasive particles and method of forming same

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US Patent 11926781 Shaped abrasive particle including dopant material and method of forming same

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US Patent 11932802 Abrasive article including shaped abrasive particles comprising a particular toothed body

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US Patent 11959009 Abrasive particles and methods of forming same

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US Patent 12084611 Fixed abrasive articles and methods of forming same

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US Patent 12122953 Abrasive article including shaped abrasive particles

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Patent Primary Examiner

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Patent 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.

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