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PARAMAGNETIC LOGGING INC

Overview
  • Total Patents
    27
About

PARAMAGNETIC LOGGING INC has a total of 27 patent applications. Its first patent ever was published in 1982. It filed its patents most often in United States, Canada and EPO (European Patent Office). Its main competitors in its focus markets measurement, environmental technology and machines are GEOPHYSICAL EXPLORATION COMPAN, RICHARD AMBRONN and MTEM LTD.

Patent filings per year

Chart showing PARAMAGNETIC LOGGING INCs patent filings per year from 1900 to 2020

Focus industries

Top inventors

# Name Total Patents
#1 Vail Iii William B 14
#2 Vail William Banning Iii 5
#3 Vail Iii William Banning 4
#4 Schwinberg Paul B 4
#5 Vail William B Iii 3
#6 Momii Steven Thomas 2
#7 Uilyam Benning Vejl Iii 1

Latest patents

Publication Filing date Title
US6031381A Electrical voltages and resistances measured to inspect metallic cased wells and pipelines
US5717334A Methods and apparatus to produce stick-slip motion of logging tool attached to a wireline drawn upward by a continuously rotating wireline drum
US5633590A Formation resistivity measurements from within a cased well used to quantitatively determine the amount of oil and gas present
US5570024A Determining resistivity of a formation adjacent to a borehole having casing using multiple electrodes and with resistances being defined between the electrodes
RU2065957C1 Method for measuring electrochemical properties of formations adjacent to hole
EP0575318A1 An electronic measurement apparatus movable in a cased borehole and compensating for casing resistance differences
US5065100A Measurement of in-phase and out-of-phase components of low frequency A.C. magnetic fields within cased boreholes to measure geophysical properties of geological formations
US5075626A Electronic measurement apparatus movable in a cased borehole and compensating for casing resistance differences
US5043668A Methods and apparatus for measurement of electronic properties of geological formations through borehole casing
CA1297153C Methods and apparatus for measurement of low frequency a.c. magnetic fields within cased boreholes to determine properties of geological formations
US4804918A Dual excitation acoustic paramagnetic logging tool
US4882542A Methods and apparatus for measurement of electronic properties of geological formations through borehole casing
US4792757A Oil well logging tools measuring paramagnetic logging effect for use in open boreholes and cased well bores
US4820989A Methods and apparatus for measurement of the resistivity of geological formations from within cased boreholes
US4724385A Acoustic paramagnetic logging tool
US4748415A Methods and apparatus for induction logging in cased boreholes
US4656422A Oil well logging tools measuring paramagnetic logging effect for use in open boreholes and cased well bores
US4528508A Nuclear magnetic resonance method and apparatus for remote detection and volumetric measurement of petroleum reserves