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MACCO OIL TOOL CO INC

Overview
  • Total Patents
    11
About

MACCO OIL TOOL CO INC has a total of 11 patent applications. Its first patent ever was published in 1948. It filed its patents most often in United States. Its main competitors in its focus markets civil engineering, machines and mechanical elements are GARRETT HENRY U, SALVESEN DRILLING SERVICES and VALLOUREC DRILLING PRODUCTS USA INC.

Patent filings in countries

World map showing MACCO OIL TOOL CO INCs patent filings in countries
# Country Total Patents
#1 United States 11

Patent filings per year

Chart showing MACCO OIL TOOL CO INCs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Civil engineering
#2 Machines
#3 Mechanical elements

Top inventors

# Name Total Patents
#1 Carlisle Willis C 3
#2 Dinning R 3
#3 Mccarvell John H 2
#4 Johnson J 1
#5 Elliott James Kelly 1
#6 Garrett Henry U 1
#7 Crawford Douglas W 1
#8 Lunebring Herman H 1
#9 Henry Mccarvell John 1
#10 Brown J 1

Latest patents

Publication Filing date Title
US3884300A Automatic safety valve
US3856082A Selective positioning well tool apparatus
US3827491A Apparatus for selectively receiving and releasing well tools
US3799259A Side pocket kickover tool
US3799269A Safety means for well flow control
US3646953A Gas lift apparatus
US3194175A Fluid-operated gas lift apparatus
US3229768A Free-fall plunger
US2610644A Means of resilient damping of pressure bellows
US2674267A Pressure regulated motor valve
US2633330A Rotating rathole head