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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 9156136 B1

PDFFull Text
Date of Patent:
Oct. 13, 2015

Filed:

Nov. 06, 2013

Systems and methods for vapor pressure leaching polycrystalline diamond cutter elements

Applicant:

National Oilwell Varco, L.p., Houston, TX (US);

Inventors:

Guodong Zhan, Spring, TX (US);

Walter R. Rothrock, New Caney, TX (US);

Parul Walia Dhall, Spring, TX (US);

Michael S. Nixon, Pearland, TX (US);

Terry R. Matthias, Gloucester, GB;

Assignee:

NATIONAL OILWELL VARCO, L.P., Houston, TX (US);

Attorney:

Conley Rose, P.C.

Primary Examiner:

Pegah Parvini

Assistant Examiner:

Alexandra M Moore

Int. Cl.
CPC ...
B24D 18/00 (2006.01); B24D 3/10 (2006.01); C23F 1/08 (2006.01); C23F 1/12 (2006.01); C22B 3/02 (2006.01); C22C 26/00 (2006.01);
U.S. Cl.
CPC ...
B24D 18/00 (2013.01); B24D 3/10 (2013.01); C23F 1/08 (2013.01); C23F 1/12 (2013.01); C22C 26/00 (2013.01); C22C 2204/00 (2013.01);
Abstract

A method is disclosed for leaching a polycrystalline diamond (PCD) cutter element. In an embodiment, the method includes suspending the PCD cutter element above a liquid acid bath. In addition, the method includes elevating the temperature of the liquid acid bath above ambient conditions to transition at least some of the liquid acid bath to acid vapors. Further, the method includes elevating the pressure of the acid vapors above ambient conditions. Still further, the method includes exposing the PCD cutter element to the acid vapors.

Find Patent Forward Citations

Zhan, Guodong. (2015). Systems and methods for vapor pressure leaching polycrystalline diamond cutter elements (U.S. Patent No. 9156136). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9156136

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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