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.:

US 8173561 B1

PDF
Full Text
Expired
Date of Patent:
May. 08, 2012

Filed:

Nov. 10, 2009
Applicants:

Elizabeth Ann Binky Peterson, Latrobe, PA (US);

William Roy Huston, Traverse City, MI (US);

Irene Spitsberg, Export, PA (US);

Michael James Verti, Murrysville, PA (US);

Sudhir Brahmandam, Irwin, PA (US);

Inventors:

Elizabeth Ann Binky Peterson, Latrobe, PA (US);

William Roy Huston, Traverse City, MI (US);

Irene Spitsberg, Export, PA (US);

Michael James Verti, Murrysville, PA (US);

Sudhir Brahmandam, Irwin, PA (US);

Assignee:

Kennametal Inc., Latrobe, PA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B 35/52 (2006.01); C04B 35/56 (2006.01); C22C 29/08 (2006.01);
U.S. Cl.
CPC ...
Abstract

A tungsten carbide material for use in precision glass molding applications having 6.06-6.13 wt. % carbon, 0.20-0.55 wt. % grain growth inhibitor, less than 0.25 wt. % binder, less than 0.6% wt. % impurities, and balance being tungsten. The tungsten carbide material has a nominal grain size of less than 0.5 microns.


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