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EARTH TOOL CORP

Overview
  • Total Patents
    15
About

EARTH TOOL CORP has a total of 15 patent applications. Its first patent ever was published in 1989. It filed its patents most often in United States, United Kingdom and Canada. Its main competitors in its focus markets civil engineering, machines and mechanical elements are SALVESEN DRILLING SERVICES, MACCO OIL TOOL CO INC and SCHULTZ ROGER L.

Patent filings in countries

World map showing EARTH TOOL CORPs patent filings in countries
# Country Total Patents
#1 United States 9
#2 United Kingdom 3
#3 Canada 2
#4 Germany 1

Patent filings per year

Chart showing EARTH TOOL CORPs patent filings per year from 1900 to 2020

Focus industries

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

Focus technologies

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

Top inventors

# Name Total Patents
#1 Wentworth Steven W 15
#2 Crane Robert F 10
#3 Haas Jon A 9
#4 Reynolds Payce D 3
#5 Payce Reynolds 1
#6 Reynolds Payce 1
#7 Hass Jon A 1
#8 Crane Robert 1
#9 Randa Mark 1

Latest patents

Publication Filing date Title
GB9520249D0 Reversible pneumatic ground piercing tool
US5603383A Reversible pneumatic ground piercing tool
US5440797A Method for making a pneumatic ground piercing tool
US5465797A Pneumatic ground piercing tool with detachable head
US5494116A Pneumatic impact tool for pipe insertion
US5337837A Dual-diameter pneumatic ground piercing tool
US5317953A Neutral-centering valve control system
US5199151A Method for making a pneumatic ground piercing tool
US5025868A Pneumatic ground piercing tool