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DOUGLAS DYNAMICS INC

Overview
  • Total Patents
    14
About

DOUGLAS DYNAMICS INC has a total of 14 patent applications. Its first patent ever was published in 1979. It filed its patents most often in United States and Canada. Its main competitors in its focus markets civil engineering, machines and transport are TYMCO INC, SNO WAY INT INC and MAINE STEEL PRODUCTS COMPANY.

Patent filings in countries

World map showing DOUGLAS DYNAMICS INCs patent filings in countries
# Country Total Patents
#1 United States 11
#2 Canada 3

Patent filings per year

Chart showing DOUGLAS DYNAMICS INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Watson Gary E 8
#2 Simi Edward A 6
#3 Doornek James R 5
#4 Miller Richard R 3
#5 Fechter Thomas P 2
#6 Pieper James C 1
#7 Barker Chad T 1
#8 Klug Steven L 1
#9 Livingston Edwin Earl 1
#10 Radomski Steven P 1

Latest patents

Publication Filing date Title
US5501405A Dispenser apparatus for spreading particulate material
US5353530A Quick mounting snow plow assembly
CA2075087A1 Cargo handling apparatus
US5420480A Automatic headlamp switching system
US5125174A Removable snowflow with a pivotable lift stand
US4999935A Hydraulic system and apparatus for use with vehicle accessory units
US4481988A Log splitter
US4304056A Snow plow mounting assembly
US4304057A Snow plow assembly including linear actuator
US4280062A Auxiliary light wiring harness
US4206602A Single lever hydraulic system control mechanism