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Houston, TX, US
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Patents Grants
last 30 patents
Information
Patent Grant
Cutting elements having non-planar surfaces and downhole cutting to...
Patent number
12,031,384
Issue date
Jul 9, 2024
Schlumberger Technology Corporation
Chen Chen
E21 - EARTH DRILLING MINING
Information
Patent Grant
Thermally stable polycrystalline diamond and methods of making the...
Patent number
11,306,542
Issue date
Apr 19, 2022
Schlumberger Technology Corporation
Yahua Bao
B24 - GRINDING POLISHING
Information
Patent Grant
Cutting elements having non-planar surfaces and downhole cutting to...
Patent number
11,215,012
Issue date
Jan 4, 2022
Schlumberger Technology Corporation
Chen Chen
E21 - EARTH DRILLING MINING
Information
Patent Grant
Convex ridge type non-planar cutting tooth and diamond drill bit
Patent number
10,563,464
Issue date
Feb 18, 2020
CNPC USA Corporation
Javier Davila
E21 - EARTH DRILLING MINING
Information
Patent Grant
Ultra-hard material cutting elements and methods of manufacturing t...
Patent number
10,350,733
Issue date
Jul 16, 2019
Smith International, Inc.
Liang Zhao
B24 - GRINDING POLISHING
Information
Patent Grant
Cutting elements having non-planar surfaces and downhole cutting to...
Patent number
10,287,825
Issue date
May 14, 2019
Smith International, Inc.
Chen Chen
E21 - EARTH DRILLING MINING
Information
Patent Grant
Convex ridge type non-planar cutting tooth and diamond drill bit
Patent number
10,125,552
Issue date
Nov 13, 2018
CNPC USA Corporation
Liang Zhao
E21 - EARTH DRILLING MINING
Information
Patent Grant
Chemical leaching/thermal decomposing carbonate in carbonate PCD
Patent number
10,105,824
Issue date
Oct 23, 2018
Smith International, Inc.
Yahua Bao
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Polycrystalline diamond compact cutter
Patent number
9,840,876
Issue date
Dec 12, 2017
CNPC USA Corp.
Liang Zhao
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Method of testing a polycrystalline diamond compact cutter
Patent number
9,746,403
Issue date
Aug 29, 2017
CNPC USA Corp.
Liang Zhao
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method for braze joining of carbonate PCD
Patent number
9,422,770
Issue date
Aug 23, 2016
Smith International, Inc.
J. Daniel Belnap
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Patents Applications
last 30 patents
Information
Patent Application
CUTTING ELEMENTS HAVING NON-PLANAR SURFACES AND DOWNHOLE CUTTING TO...
Publication number
20220112773
Publication date
Apr 14, 2022
SCHLUMBERGER TECHNOLOGY CORPORATION
Chen Chen
E21 - EARTH DRILLING MINING
Information
Patent Application
Polycrystalline diamond compact cutter with improved geometry for c...
Publication number
20200181985
Publication date
Jun 11, 2020
CNPC USA CORPORATION
Javier DAVILA
E21 - EARTH DRILLING MINING
Information
Patent Application
CUTTING ELEMENTS HAVING NON-PLANAR SURFACES AND DOWNHOLE CUTTING TO...
Publication number
20190264511
Publication date
Aug 29, 2019
Smith International, Inc.
Chen CHEN
E21 - EARTH DRILLING MINING
Information
Patent Application
CONVEX RIDGE TYPE NON-PLANAR CUTTING TOOTH AND DIAMOND DRILL BIT
Publication number
20190040689
Publication date
Feb 7, 2019
CNPC USA CORPORATION
Zhao Liang
E21 - EARTH DRILLING MINING
Information
Patent Application
CONVEX RIDGE TYPE NON-PLANAR CUTTING TOOTH AND DIAMOND DRILL BIT
Publication number
20170058615
Publication date
Mar 2, 2017
CNPC USA CORPORATION
Zhao Liang
E21 - EARTH DRILLING MINING
Information
Patent Application
ULTRA-HARD MATERIAL CUTTING ELEMENTS AND METHODS OF MANUFACTURING T...
Publication number
20160168919
Publication date
Jun 16, 2016
Smith International, Inc.
Liang Zhao
E21 - EARTH DRILLING MINING
Information
Patent Application
METHOD OF TESTING A POLYCRYSTALLINE DIAMOND COMPACT CUTTER
Publication number
20160097702
Publication date
Apr 7, 2016
CNPC USA Corp.
Liang ZHAO
G01 - MEASURING TESTING
Information
Patent Application
POLYCRYSTALLINE DIAMOND COMPACT CUTTER
Publication number
20160097242
Publication date
Apr 7, 2016
CNPC USA Corp.
Liang ZHAO
E21 - EARTH DRILLING MINING
Information
Patent Application
CUTTING ELEMENTS HAVING NON-PLANAR SURFACES AND DOWNHOLE CUTTING TO...
Publication number
20150259988
Publication date
Sep 17, 2015
Smith International, Inc.
Chen CHEN
E21 - EARTH DRILLING MINING
Information
Patent Application
CHEMICAL LEACHING/THERMAL DECOMPOSING CARBONATE IN CARBONATE PCD
Publication number
20150183091
Publication date
Jul 2, 2015
Smith International, Inc.
Yahua Bao
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Application
THERMALLY STABLE POLYCRYSTALLINE DIAMOND AND METHODS OF MAKING THE...
Publication number
20150068817
Publication date
Mar 12, 2015
Smith International, Inc.
YAHUA BAO
E21 - EARTH DRILLING MINING
Information
Patent Application
METHOD FOR BRAZE JOINING OF CARBONATE PCD
Publication number
20130168158
Publication date
Jul 4, 2013
Smith International, Inc.
J. Daniel BELNAP
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR