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KOEHRING WATEROUS LTD

Overview
  • Total Patents
    21
About

KOEHRING WATEROUS LTD has a total of 21 patent applications. Its first patent ever was published in 1960. It filed its patents most often in Canada, United States and Finland. Its main competitors in its focus markets agriculture, textiles and paper and machines are KOEHRING CANADA LTD, 1045929 ONTARIO LTD and MILBOURN DAVID E.

Patent filings in countries

World map showing KOEHRING WATEROUS LTDs patent filings in countries
# Country Total Patents
#1 Canada 9
#2 United States 7
#3 Finland 2
#4 Sweden 2
#5 France 1

Patent filings per year

Chart showing KOEHRING WATEROUS LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Alexander Donald K 4
#2 Martinson Edwin O 3
#3 Hamilton Alan R 3
#4 Denovan John J 3
#5 Martinson E 2
#6 Kurelek J 2
#7 Kurelek John 2
#8 Denovan J J 1
#9 Huffaker P 1
#10 Cryderman G 1

Latest patents

Publication Filing date Title
US3734419A Finger bars for pulpwood grinders
CA947555A Finger bars for pulpwood grinders
US3690568A Wood grinding
US3557849A Tree harvester
US3675691A Tree harvesting apparatus
CA919558A Tree harvesting apparatus
US3709267A Log handling mechanism for tree harvesters
CA903129A Log handling mechanism for tree harvesters
CA858841A Wood pulp grinder
US3081821A Cylinder mold
CA884099A Wood grinding
CA803279A Tree harvester
CA656482A Cylinder mold for rotary drum filter
CA631961A Pulp screening mechanism
CA822979A Logging apparatus