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ALKIRK INC

Overview
  • Total Patents
    12
About

ALKIRK INC has a total of 12 patent applications. Its first patent ever was published in 1958. It filed its patents most often in United States, Germany and Austria. Its main competitors in its focus markets civil engineering and mechanical elements are JIANGXI LANXIANG HEAVY IND CO LTD, HEEREMA HOLDING CONSTRUCTION I and NELSON YVES.

Patent filings in countries

World map showing ALKIRK INCs patent filings in countries
# Country Total Patents
#1 United States 7
#2 Germany 2
#3 Austria 1
#4 Switzerland 1
#5 United Kingdom 1

Patent filings per year

Chart showing ALKIRK INCs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Civil engineering
#2 Mechanical elements

Focus technologies

# Technology
#1 Shafts
#2 Earth drilling
#3 Mining
#4 Gearing

Top inventors

# Name Total Patents
#1 Kirkpatrick Max B 4
#2 Lawrence James C 3
#3 Hauth Hamilton William 1
#4 Hamilton William Hauth 1
#5 James C Lawrence 1
#6 Lawrence James Clifton 1
#7 Clifton Lawrence James 1

Latest patents

Publication Filing date Title
US3437380A Steering method and apparatus
US3485309A Earth boring apparatus
US3325218A Earth boring machine
US3343878A Rotary tunneling machine having resiliently mounted vibrated kerf cutter
US3386520A Apparatus for anchoring the pilot member in a pilot bore
GB1088387A Steerable boring apparatus and a method of steering the apparatus when rock, earth or like material is bored thereby
US3141510A Anchor mechanism for rock drills
US3065651A Motion transmitting mechanism having planetary gearing