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William C. McDonald
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Houston, TX, US
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Patents Grants
last 30 patents
Information
Patent Grant
Wellbore motor having magnetic gear drive
Patent number
7,549,467
Issue date
Jun 23, 2009
Dexter Magnetic Technologies, Inc.
William J. McDonald
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Wellbore valve having linear magnetically geared valve actuator
Patent number
7,487,829
Issue date
Feb 10, 2009
Dexter Magnetic Technologies, Inc.
William J. McDonald
E21 - EARTH DRILLING MINING
Information
Patent Grant
Wellbore motor having magnetic gear drive
Patent number
7,481,283
Issue date
Jan 27, 2009
Dexter Magnetic Technologies, Inc.
William J. McDonald
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Multi-gradient drilling method and system
Patent number
6,530,437
Issue date
Mar 11, 2003
Maurer Technology Incorporated
William C. Maurer
E21 - EARTH DRILLING MINING
Information
Patent Grant
Advanced coring apparatus and method
Patent number
6,457,538
Issue date
Oct 1, 2002
Maurer Engineering, Inc.
Gerard T. Pittard
E21 - EARTH DRILLING MINING
Information
Patent Grant
Downhole buried utility sensing and data transmission system and me...
Patent number
6,313,755
Issue date
Nov 6, 2001
Maurer Engineering, Inc.
J. Christopher Hetmaniak
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Wireless downhole electromagnetic data transmission system and method
Patent number
5,467,083
Issue date
Nov 14, 1995
Electric Power Research Institute
William J. McDonald
E21 - EARTH DRILLING MINING
Information
Patent Grant
Steering sub for flexible drilling
Patent number
5,396,966
Issue date
Mar 14, 1995
Slimdril International Inc.
Albert E. Roos
E21 - EARTH DRILLING MINING
Information
Patent Grant
Impact and impact-rotary tool testing apparatus using rotary speed...
Patent number
5,277,055
Issue date
Jan 11, 1994
Consolidated Edison Company of New York, Inc.
Gerard T. Pittard
G01 - MEASURING TESTING
Information
Patent Grant
Deviated wellbore drilling system and apparatus
Patent number
5,022,471
Issue date
Jun 11, 1991
Maurer Engineering, Inc.
William C. Maurer
E21 - EARTH DRILLING MINING
Information
Patent Grant
Controlled directional drilling system and method
Patent number
4,991,668
Issue date
Feb 12, 1991
Maurer Engineering, Inc.
William A. Rehm
E21 - EARTH DRILLING MINING
Information
Patent Grant
Rotary rapid excavation system
Patent number
4,949,795
Issue date
Aug 21, 1990
Gas Research Institute
William C. McDonald
E21 - EARTH DRILLING MINING
Information
Patent Grant
Earth drilling apparatus with control valve
Patent number
4,936,397
Issue date
Jun 26, 1990
Slimdril International, Inc.
William J. McDonald
E21 - EARTH DRILLING MINING
Information
Patent Grant
Air motor operated rotary earth drilling tool
Patent number
4,880,065
Issue date
Nov 14, 1989
Gas Research Institute
William J. McDonald
E21 - EARTH DRILLING MINING
Information
Patent Grant
Guided earth boring tool
Patent number
4,858,704
Issue date
Aug 22, 1989
Gas Research Institute
William J. McDonald
E21 - EARTH DRILLING MINING
Information
Patent Grant
Deviated wellbore drilling system and apparatus
Patent number
4,828,053
Issue date
May 9, 1989
Maurer Engineering, Inc.
William C. Maurer
E21 - EARTH DRILLING MINING
Information
Patent Grant
Orienting and circulating sub
Patent number
4,789,032
Issue date
Dec 6, 1988
William A. Rehm
E21 - EARTH DRILLING MINING
Information
Patent Grant
Guided earth boring tool
Patent number
4,694,913
Issue date
Sep 22, 1987
Gas Research Institute
William J. McDonald
E21 - EARTH DRILLING MINING
Information
Patent Grant
Pressure balanced bearing assembly for downhole motors
Patent number
4,665,997
Issue date
May 19, 1987
Maurer Engineering Inc.
William C. Maurer
E21 - EARTH DRILLING MINING
Information
Patent Grant
Steering system for percussion boring tools
Patent number
4,632,191
Issue date
Dec 30, 1986
Gas Research Institute
William J. McDonald
E21 - EARTH DRILLING MINING
Information
Patent Grant
Percussion boring tool
Patent number
4,621,698
Issue date
Nov 11, 1986
Gas Research Institute
Gerard T. Pittard
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method and apparatus for determining the distance and angular orien...
Patent number
4,559,716
Issue date
Dec 24, 1985
Exxon Production Research Co.
Arthur C. Daughtry
E21 - EARTH DRILLING MINING
Information
Patent Grant
Insulated drill collar gap sub assembly for a toroidal coupled tele...
Patent number
4,496,174
Issue date
Jan 29, 1985
Tele-Drill, Inc.
William J. McDonald
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method and apparatus for remote recovery of submerged pipelines
Patent number
4,445,804
Issue date
May 1, 1984
Exxon Production Research Co.
Mohamed G. Abdallah
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Point gap assembly for a toroidal coupled telemetry system
Patent number
4,387,372
Issue date
Jun 7, 1983
Tele-Drill, Inc.
Harrison C. Smith
E21 - EARTH DRILLING MINING
Information
Patent Grant
Down hole drilling motor with pressure balanced bearing seals
Patent number
4,246,976
Issue date
Jan 27, 1981
Maurer Engineering Inc.
William J. McDonald
E21 - EARTH DRILLING MINING
Information
Patent Grant
Well drilling tool with lubricant level indicator
Patent number
4,114,702
Issue date
Sep 19, 1978
Maurer Engineering Inc.
William C. Maurer
E21 - EARTH DRILLING MINING
Information
Patent Grant
Down hole well drilling tool with reversible thrust bearings
Patent number
4,114,704
Issue date
Sep 19, 1978
Maurer Engineering Inc.
William Casper Maurer
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
Wellbore Valve Having Linear Magnetically Geared Valve Actuator
Publication number
20070289734
Publication date
Dec 20, 2007
William J. McDonald
E21 - EARTH DRILLING MINING
Information
Patent Application
Wellbore Motor Having Magnetic Gear Drive
Publication number
20070215343
Publication date
Sep 20, 2007
William J. McDonald
E21 - EARTH DRILLING MINING
Information
Patent Application
Wellbore motor having magnetic gear drive
Publication number
20070125578
Publication date
Jun 7, 2007
William J. McDonald
E21 - EARTH DRILLING MINING
Information
Patent Application
Turbine generator system and method
Publication number
20050139393
Publication date
Jun 30, 2005
NOBLE DRILLING CORPORATION
William C. Maurer
E21 - EARTH DRILLING MINING
Information
Patent Application
Seismic energy source for use during wellbore drilling
Publication number
20040240320
Publication date
Dec 2, 2004
NOBLE DRILLING SERVICES, INC.
William J. McDonald
G01 - MEASURING TESTING
Information
Patent Application
Multi-gradient drilling method and system
Publication number
20020011338
Publication date
Jan 31, 2002
William C. Maurer
E21 - EARTH DRILLING MINING