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HAWTHORNE HERBERT J

Overview
  • Total Patents
    12
About

HAWTHORNE HERBERT J has a total of 12 patent applications. Its first patent ever was published in 1933. It filed its patents most often in United States. Its main competitors in its focus markets civil engineering, machines and engines, pumps and turbines are DRILEX LTD, DYNAMIC TUBULAR SYSTEMS INC and DAILEY OIL TOOLS INC.

Patent filings in countries

World map showing HAWTHORNE HERBERT Js patent filings in countries
# Country Total Patents
#1 United States 12

Patent filings per year

Chart showing HAWTHORNE HERBERT Js patent filings per year from 1900 to 2020

Focus technologies

# Technology
#1 Earth drilling
#2 Unspecified technologies
#3 Pumps

Top inventors

# Name Total Patents
#1 Hawthorne Herbert J 12
#2 Weaver Earl M 4
#3 Carey Paul P 1

Latest patents

Publication Filing date Title
US3259196A Rotary kelly hammer
US3150728A Percussion mechanism for rotary drilling apparatus
US3142345A Method and apparatus for rotary drilling with compressional waves
US2890020A Removable blade drag bits
US2858958A Quick change coupling
US2831657A Removable blade drag bits
US2783973A Drill bit
US2695158A Fracture type rock cutter
US2666622A Detachable blade bit
US2615684A Detachable blade bit
US2233260A Means and method of drilling wells
US1919553A Detachable blade drag bit