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HELM JOHN

Overview
  • Total Patents
    12
About

HELM JOHN has a total of 12 patent applications. Its first patent ever was published in 1903. It filed its patents most often in United States, United Kingdom and Canada. Its main competitors in its focus markets civil engineering are KONINK MIJ TOT HET UITVOEREN V, FAILLA IGNAZIO and MARINE RESOURCES EXPLORATION INTERNAT BV.

Patent filings in countries

World map showing HELM JOHNs patent filings in countries
# Country Total Patents
#1 United States 9
#2 United Kingdom 2
#3 Canada 1

Patent filings per year

Chart showing HELM JOHNs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Civil engineering

Focus technologies

# Technology
#1 Dredging
#2 Earth drilling

Top inventors

# Name Total Patents
#1 Helm John 12

Latest patents

Publication Filing date Title
US1200612A Pipe-wrench.
US1031261A Pipe-wrench.
US848743A Excavating bucket and cutter.
US848742A Excavating-machine.
GB190520090A Improvements in Excavating Machines.
CA98718A Excavator
US821413A Excavating-machine.
US801007A Excavating-machine.
US802985A Excavating-machine.
GB190409031A Improvements in Excavating Machines.
US777204A Excavating-machine.
US757459A Trench-digger.