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Eric F. Drake
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Houston, TX, US
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Patents Grants
last 30 patents
Information
Patent Grant
Hard composite with deformable constituent and method of applying t...
Patent number
8,945,720
Issue date
Feb 3, 2015
National-Oilwell Varco, L.P.
Harold Sreshta
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Matrix turbine sleeve and method for making same
Patent number
8,083,011
Issue date
Dec 27, 2011
Harold A. Sreshta
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Methods of treating preform elements
Patent number
6,517,902
Issue date
Feb 11, 2003
Camco International (UK) Limited
Eric F. Drake
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Fabrication process for powder composite rod
Patent number
6,440,358
Issue date
Aug 27, 2002
Schlumberger Technology Corporation
Harold A. Sreshta
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Fabrication process for high density powder composite hardfacing rod
Patent number
6,361,739
Issue date
Mar 26, 2002
Schlumberger Technology Corporation
Harold Sreshta
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Rock bit hardmetal overlay and proces of manufacture
Patent number
6,045,750
Issue date
Apr 4, 2000
Camco International Inc.
Eric F. Drake
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Hardmetal facing for earth boring drill bit
Patent number
5,988,302
Issue date
Nov 23, 1999
Camco International, Inc.
Harold A. Sreshta
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Rock bit hardmetal overlay and process of manufacture
Patent number
5,967,248
Issue date
Oct 19, 1999
Camco International Inc.
Eric F. Drake
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Hardmetal facing for rolling cutter drill bit
Patent number
5,653,299
Issue date
Aug 5, 1997
Camco International Inc.
Harold A. Sreshta
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Aluminide coated bearing elements for roller cutter drill bits
Patent number
5,161,898
Issue date
Nov 10, 1992
Camco International Inc.
Eric F. Drake
E21 - EARTH DRILLING MINING
Information
Patent Grant
Case hardened roller cutter for a rotary drill bit and method of ma...
Patent number
4,969,378
Issue date
Nov 13, 1990
Reed Tool Company
Mou-Chih Lu
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Roller cutter drill bit and method of forming
Patent number
4,887,493
Issue date
Dec 19, 1989
Reed Tool Company
Eric F. Drake
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Rotary drill bit, parts therefor, and method of manufacturing thereof
Patent number
4,595,067
Issue date
Jun 17, 1986
Reed Tool Company
Eric F. Drake
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Methods of manufacturing gradient composite metallic structures
Patent number
4,398,952
Issue date
Aug 16, 1983
Reed Rock Bit Company
Eric F. Drake
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Cutting teeth for rolling cutter drill bit
Patent number
4,372,404
Issue date
Feb 8, 1983
Reed Rock Bit Company
Eric F. Drake
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Metal cutting tools utilizing gradient composites
Patent number
4,368,788
Issue date
Jan 18, 1983
Reed Rock Bit Company
Eric F. Drake
B22 - CASTING POWDER METALLURGY
Patents Applications
last 30 patents
Information
Patent Application
HARD COMPOSITE WITH DEFORMABLE CONSTITUENT AND METHOD OF APPLYING T...
Publication number
20150107908
Publication date
Apr 23, 2015
National-Oilwell Varco, L.P.
Harold Sreshta
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
Hard Composite with Deformable Constituent and Method of Applying t...
Publication number
20110031028
Publication date
Feb 10, 2011
National Oilwell Varco, L.P.
Harold Sreshta
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
MATRIX TURBINE SLEEVE AND METHOD FOR MAKING SAME
Publication number
20100078222
Publication date
Apr 1, 2010
Harold A. Sreshta
E21 - EARTH DRILLING MINING
Information
Patent Application
COMPOSITE STRUCTURE HAVING A NON-PLANAR INTERFACE AND METHOD OF MAK...
Publication number
20060237236
Publication date
Oct 26, 2006
Harold Sreshta
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
Fabrication process for powder composite rod
Publication number
20020110474
Publication date
Aug 15, 2002
Harold A. Sreshta
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Application
Methods of treating preform elements
Publication number
20010049019
Publication date
Dec 6, 2001
Eric F. Drake
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...