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PREC DRILLING TECH SERV GROUP

Overview
  • Total Patents
    67
About

PREC DRILLING TECH SERV GROUP has a total of 67 patent applications. Its first patent ever was published in 1991. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets civil engineering, measurement and machines are LWT INSTR INC, WESSLING STEFAN and MACLEOD LAB INC.

Patent filings in countries

World map showing PREC DRILLING TECH SERV GROUPs patent filings in countries

Patent filings per year

Chart showing PREC DRILLING TECH SERV GROUPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Mickael Medhat W 13
#2 Winnacker Helmut 11
#3 Wu Jian-Qun 10
#4 Jones Dale A 6
#5 Weisbeck Denis 5
#6 Krill Ross Michael 5
#7 Steiner Adrian 4
#8 Wisler Macmillan M 4
#9 Radzinski Paul E 3
#10 Draeger Uwe 3

Latest patents

Publication Filing date Title
CA2489968A1 Method for the circulation of gas when drilling or working a well
US2006102834A1 Logging tool with response invariant to changes in borehole pressure
WO2005005763A2 Method for drilling with improved fluid collection pattern
CA2452858A1 Hydraulic release running tool
CA2450994A1 Method and apparatus to control the rate of flow of a fluid through a conduit
US7145473B2 Electromagnetic borehole telemetry system incorporating a conductive borehole tubular
US2004027917A1 Borehole logging apparatus for deep well drilling with a device for transmitting borehole measurement data
CA2436069A1 Borehole logging apparatus for deep well drilling with a device for transmitting borehole measurement data
US7046584B2 Compensated ensemble crystal oscillator for use in a well borehole system
CA2427937A1 Debris screen for a downhole tool
DE10316515A1 Method and device for generating signals that can be transmitted in a borehole
CA2424719A1 Hydraulically set liner hanger
US6966211B2 Downhole calibration system for directional sensors
US6924640B2 Oil and gas well tubular inspection system using hall effect sensors
CA2412813A1 Open hole straddle tool
DE10251496A1 Device for generating electrical energy and pressure pulses for signal transmission
DE10236228A1 Borehole logging apparatus for drilling, has flow regulator with control piston controlling cross-section of opening of bypass opening based on pressure differential produced at entrance opening of housing and force of spring
US6845563B2 Method and device for the measurement of the drift of a borchole
GB0509219D0 Standoff compenstation for nuclear measurements
US6700115B2 Standoff compensation for nuclear measurements