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BELL INC F W

Overview
  • Total Patents
    36
About

BELL INC F W has a total of 36 patent applications. Its first patent ever was published in 1963. It filed its patents most often in United States, Germany and United Kingdom. Its main competitors in its focus markets measurement, electrical machinery and energy and control are HOKUTO ELECTRONICS INC, SKELSCAN INC and SHAW THOMAS M.

Patent filings in countries

World map showing BELL INC F Ws patent filings in countries
# Country Total Patents
#1 United States 12
#2 Germany 7
#3 United Kingdom 6
#4 Canada 5
#5 France 5
#6 Japan 1

Patent filings per year

Chart showing BELL INC F Ws patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Chapman Richard M 8
#2 Sisson Edwin D 5
#3 Stevens Raymond H 3
#4 Smith George H 2
#5 Yore Donald M 2
#6 Mcmaster Robert C 2
#7 Hudson Stevens Raymond 1
#8 Charles Mcmaster Robert 1
#9 Dean Sisson Edwin 1
#10 Cunningham George J 1

Latest patents

Publication Filing date Title
US5416407A Electric current sensor employing hall effect generator
US4059798A Method and apparatus for measuring the current flowing in a workpiece
US3596144A Automatic magnet charger and calibration system
US3551706A Hall effect device configurations for extended frequency range
US3582932A Magnetic-field-responsive proximity detector apparatus
US3546578A Heterodyned frequency nondestructive testing system utilizing a hall effect device for magnetic field sensing of an eddy current reaction magnetic field
FR1519343A Electrical test apparatus and method
FR1517455A Non-destructive device for testing electrically conductive materials
US3449664A Magnetic reaction testing apparatus and method of testing utilizing semiconductor means for magnetic field sensing of an eddy-current-reaction magnetic field
US3418542A Method and apparatus for demagnetization of multipole magnetic devices
US3450986A Magnetic reaction testing apparatus and method of testing utilizing semiconductor means for magnetic field sensing of an eddy-current-reaction magnetic field
FR1455988A Methods and apparatus for non-destructive testing
US3408563A Magnetic-field-responsive proximity detector apparatus utilizing a hall-effect device
FR1435794A Method and apparatus for locating an electrical conductor
US3359495A Magnetic reaction testing apparatus and method of testing utilizing semiconductor means for magnetic field sensing of an eddy-current-reaction magnetic field
US3344347A Method and apparatus for determining displacement utilizing a hall plate positioned tangential to an arcuate magnetic field
CA822806A Method and apparatus for magnetic reaction testing
CA831636A Electromagnetic testing utilizing the hall effect
CA822807A Method and apparatus for magnetic reaction testing
CA731320A Conductor locating apparatus and method