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:
Feb. 23, 2010
Filed:
Jul. 05, 2005
Gregory T. Lockwood, Pearland, TX (US);
Anthony Griffo, The Woodlands, TX (US);
Dah-ben Liang, Kingwood, TX (US);
Alysia C. White, Fulshear, TX (US);
Gregory T. Lockwood, Pearland, TX (US);
Anthony Griffo, The Woodlands, TX (US);
Dah-Ben Liang, Kingwood, TX (US);
Alysia C. White, Fulshear, TX (US);
Smith International, Inc., Houston, TX (US);
Abstract
A hardfacing composition for a drill bit, including a carbide phase comprising from about 50% to about 75% by weight of the hardfacing composition of a combination of 16 to 40 mesh cemented tungsten carbide and 80 to 200 mesh super dense tungsten carbide cobalt particles, wherein about 5% to about 50% by weight of the carbide phase comprises the super dense tungsten carbide cobalt particles, and a binder alloy including about 25% to about 50% by weight of the hardfacing composition.