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CHRISTENSEN INC NORTON

Overview
  • Total Patents
    183
About

CHRISTENSEN INC NORTON has a total of 183 patent applications. Its first patent ever was published in 1978. 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 engines, pumps and turbines are CONDRA ELMO L, WASH OVERSHOT AND SPEAR ENGINE and DODDS REDUS D.

Patent filings in countries

World map showing CHRISTENSEN INC NORTONs patent filings in countries

Patent filings per year

Chart showing CHRISTENSEN INC NORTONs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Grappendorf Richard H 22
#2 Meskin Alexander K 16
#3 Radford Steven R 15
#4 Juergens Rainer 14
#5 Pay Clifford R 13
#6 Aumann James T 11
#7 Jurgens Rainer 9
#8 Filshtinsky Michael 7
#9 Munzel Hermann 6
#10 Davis J Stanley 6

Latest patents

Publication Filing date Title
AU2887589A Reinforced rotary drill bit
DE3628265A1 Stabiliser for drilling strings
DE3613265A1 CORE DRILLING TOOL FOR STONE DRILLING
DE3604270C1 Drilling tool for deep drilling
ZA8600556B Kerfing drag bit
DE3543295A1 Fishing tool for removing iron-bearing chips from deep-drill holes
EP0163946A1 Apparatus for optional straight or directional drilling underground formations
DE3513124C1 Chisel direct drive for deep drilling tools
DE3513123C1 Mechanical guillotine
US4664205A Hydraulic inner barrel in a drill string coring tool
EP0156264A2 Multi-component cutting element using triangular, rectangular and higher order polyhedral-shaped polycrystalline diamond disks
CA1224408A Device for delivering flowable material
EP0156235A2 Multi-component cutting element using consolidated rod-like polycrystalline diamond
AU3946885A Cutting element using polycrystalline diamond disks
US4643265A Core barrel apparatus for disposing a core within a thin, flexible film casing
US4580643A Adjustable bearing section core barrel
US4607710A Cammed and shrouded core catcher
US4605075A Shrouded core catcher
US4606416A Self activating, positively driven concealed core catcher
US4603749A Apparatus for downward displacement of an inner tube within a coring barrel