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EASTMAN CHRISTENSEN COMPANY
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SALT LAKE CITY, UT, US
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Patents Grants
last 30 patents
Information
Patent Grant
Multi-component cutting element using consolidated rod-like polycry...
Patent number
5,205,684
Issue date
Apr 27, 1993
Eastman Christensen Company
Alexander K. Meskin
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method and apparatus for optional straight hole drilling or directi...
Patent number
5,099,931
Issue date
Mar 31, 1992
Eastman Christensen Company
Volker Krueger
E21 - EARTH DRILLING MINING
Information
Patent Grant
Earth boring drill bit with matrix displacing material
Patent number
5,090,491
Issue date
Feb 25, 1992
Eastman Christensen Company
Gordon A. Tibbitts
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Multi-component cutting element using triangular, rectangular and h...
Patent number
5,028,177
Issue date
Jul 2, 1991
Eastman Christensen Company
Alexander K. Meskin
E21 - EARTH DRILLING MINING
Information
Patent Grant
Drill bit with improved steerability
Patent number
5,004,057
Issue date
Apr 2, 1991
Eastman Christensen Company
Gordon A. Tibbitts
E21 - EARTH DRILLING MINING
Information
Patent Grant
Core drilling tool
Patent number
4,955,438
Issue date
Sep 11, 1990
Eastman Christensen Company
Rainer Juergens
E21 - EARTH DRILLING MINING
Information
Patent Grant
Mud pulse valve and method of valving in a mud flow for sharper ris...
Patent number
4,953,595
Issue date
Sep 4, 1990
Eastman Christensen Company
Oleg Kotlyar
E21 - EARTH DRILLING MINING
Information
Patent Grant
Preformed elements for a rotary drill bit
Patent number
4,919,013
Issue date
Apr 24, 1990
Eastman Christensen Company
Redd H. Smith
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Cutting tooth for a rotating drag bit
Patent number
D307279
Issue date
Apr 17, 1990
Eastman Christensen Company
Lloyd Vincent
D15 - Machines not elsewhere specified
Information
Patent Grant
Large compact cutter rotary drill bit utilizing directed hydraulics...
Patent number
4,913,244
Issue date
Apr 3, 1990
Eastman Christensen Company
William R. Trujillo
E21 - EARTH DRILLING MINING
Information
Patent Grant
Drill bit having improved cutter configuration
Patent number
4,913,247
Issue date
Apr 3, 1990
Eastman Christensen Company
Mark L. Jones
E21 - EARTH DRILLING MINING
Information
Patent Grant
Device for producing pressure pulses in an oil well fluid medium
Patent number
4,905,778
Issue date
Mar 6, 1990
Eastman Christensen Company
Rainer Jurgens
E21 - EARTH DRILLING MINING
Information
Patent Grant
Articulated downhole surveying instrument assembly
Patent number
4,901,804
Issue date
Feb 20, 1990
Eastman Christensen Company
Theodore G. Thometz
E21 - EARTH DRILLING MINING
Information
Patent Grant
Apparatus for the generation of pressure pulses in drilling mud com...
Patent number
4,901,290
Issue date
Feb 13, 1990
Eastman Christensen Company
Dagobert Feld
E21 - EARTH DRILLING MINING
Information
Patent Grant
Rotary drill bit with abrasion and erosion resistant facing
Patent number
4,884,477
Issue date
Dec 5, 1989
Eastman Christensen Company
Redd H. Smith
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Drag bit for drilling in plastic formation with maximum chip cleara...
Patent number
4,883,132
Issue date
Nov 28, 1989
Eastman Christensen
Gordon A. Tibbitts
E21 - EARTH DRILLING MINING
Information
Patent Grant
Large compact cutter rotary drill bit utilizing directed hydraulics...
Patent number
4,883,136
Issue date
Nov 28, 1989
Eastman Christensen Co.
William R. Trujillo
E21 - EARTH DRILLING MINING
Information
Patent Grant
Nozzle retention system for a drill bit
Patent number
4,878,548
Issue date
Nov 7, 1989
Eastman Christensen
Alfred Ostertag
E21 - EARTH DRILLING MINING
Information
Patent Grant
Replaceable cutter using internal ductile metal receptacles
Patent number
4,877,096
Issue date
Oct 31, 1989
Eastman Christensen Company
Gordon A. Tibbitts
E21 - EARTH DRILLING MINING
Information
Patent Grant
Core drilling tool with direct drive
Patent number
4,875,531
Issue date
Oct 24, 1989
Eastman Christensen Company
Johann Biehl
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method for transmitting downhole data in a reduced time
Patent number
4,873,522
Issue date
Oct 10, 1989
Eastman Christensen Company
Rainer Jurgens
E21 - EARTH DRILLING MINING
Information
Patent Grant
Drill string drill collars
Patent number
4,872,519
Issue date
Oct 10, 1989
Eastman Christensen Company
Denis S. Kopecki
E21 - EARTH DRILLING MINING
Information
Patent Grant
Apparatus for establishing hydraulic flow regime in drill bits
Patent number
4,869,330
Issue date
Sep 26, 1989
Eastman Christensen Company
Gordon A. Tibbitts
E21 - EARTH DRILLING MINING
Information
Patent Grant
Drill bit direct drive for deep well drilling tools
Patent number
4,854,401
Issue date
Aug 8, 1989
Eastman Christensen Company
Volker Kruger
E21 - EARTH DRILLING MINING
Information
Patent Grant
Stabilizer for deep well drilling tools
Patent number
4,854,403
Issue date
Aug 8, 1989
Eastman Christensen Company
Alfred Ostertag
E21 - EARTH DRILLING MINING
Information
Patent Grant
Core drilling tool for boreholes in rock
Patent number
4,773,489
Issue date
Sep 27, 1988
Eastman Christensen Company
Friedhelm Makohl
E21 - EARTH DRILLING MINING
Information
Patent Grant
Universal mud pulse telemetry system
Patent number
4,771,408
Issue date
Sep 13, 1988
Eastman Christensen
Oleg Kotlyar
E21 - EARTH DRILLING MINING
Information
Patent Grant
Printed circuit packaging for high vibration and temperature enviro...
Patent number
4,768,286
Issue date
Sep 6, 1988
Eastman Christensen Co.
Carl Ketcham
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Method and apparatus for trelemetry while drilling by changing dril...
Patent number
4,763,258
Issue date
Aug 9, 1988
Eastman Christensen Company
Paul D. Engelder
E21 - EARTH DRILLING MINING
Information
Patent Grant
Bit design for a rotating bit incorporating synthetic polycrystalli...
Patent number
4,744,427
Issue date
May 17, 1988
Eastman Christensen Company
Richard H. Grappendorf
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Trademark
last 30 trademarks
Information
Trademark
73729970 - KING CUTTER
Serial number
73729970
Registration number
1530564
Filing date
May 23, 1988
EASTMAN CHRISTENSEN COMPANY
7 - Machines and machine tools
Information
Trademark
73628995 - EASTMAN CHRISTENSEN
Serial number
73628995
Registration number
1534976
Filing date
Nov 6, 1986
EASTMAN CHRISTENSEN COMPANY
7 - Machines and machine tools