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EASTMAN CHRISTENSEN CO

Overview
  • Total Patents
    142
About

EASTMAN CHRISTENSEN CO has a total of 142 patent applications. Its first patent ever was published in 1984. It filed its patents most often in United States, Canada and EPO (European Patent Office). Its main competitors in its focus markets civil engineering, machines and mechanical elements are TURBODRILL INTERNAT CORP, WELLBORE ENERGY SOLUTIONS LLC and EXTREME MACHINING AUSTRALIA PT.

Patent filings in countries

World map showing EASTMAN CHRISTENSEN COs patent filings in countries

Patent filings per year

Chart showing EASTMAN CHRISTENSEN COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Tibbitts Gordon A 16
#2 Juergens Rainer 12
#3 Meskin Alexander K 9
#4 Krueger Volker 7
#5 Jones Mark L 7
#6 Radford Steven R 6
#7 Feld Dagobert 6
#8 Ostertag Alfred 6
#9 Trujillo William R 6
#10 Witte Johannes 6

Latest patents

Publication Filing date Title
US5090491A Earth boring drill bit with matrix displacing material
EP0425782A1 Pipe connection for a drill string
EP0413097A1 Device for creating pressure impulses in drilling mud
DE4017761A1 DRILLING TOOL FOR DRILLING HOLES IN SUBSTRATE ROCK INFORMATION
EP0380909A2 Method and coring apparatus for subterranean rock drilling
DE3942438A1 DEVICE FOR DRILLING A SUB-DRILLING OR DEFLECTING DRILL OF A PARTICULARLY PIPED HOLE
DE3939538A1 DIRECTIONAL DRILLING TOOL
US5028177A Multi-component cutting element using triangular, rectangular and higher order polyhedral-shaped polycrystalline diamond disks
US5004057A Drill bit with improved steerability
AU3489689A Rotary drilling bit for deep-hole drillings
US4953595A Mud pulse valve and method of valving in a mud flow for sharper rise and fall times, faster data pulse rates, and longer lifetime of the mud pulse valve
ZA8903243B Rotary drill cutter for deep drilling
EP0338367A2 Core-drilling tool
US4877096A Replaceable cutter using internal ductile metal receptacles
DE3902870A1 Method of sinking bores in subterranean rock formations
AU2858589A Drill bit with improved steerability
US4913244A Large compact cutter rotary drill bit utilizing directed hydraulics for each cutter
CA1302393C Drag bit for drilling in plastic formations with maximum chip clearance and hydraulics for direct chip impingement
EP0312487A1 Earth boring drill bit with matrix displacing material
US4919013A Preformed elements for a rotary drill bit