Assignee
DOUGLAS DYNAMICS LLC
US40 patents
Top patents by PatentIndex Score
US6526677B1Mar 4, 2003
Snowplow mounting assembly
DOUGLAS DYNAMICS LLC105 citations96
US7134227B2Nov 14, 2006
Adjustable wing plow
DOUGLAS DYNAMICS LLC59 citations95
US6928757B2Aug 16, 2005
Snowplow mounting assembly
DOUGLAS DYNAMICS LLC67 citations95
US6711837B2Mar 30, 2004
Snowplow mounting assembly
DOUGLAS DYNAMICS LLC76 citations95
US6944978B2Sep 20, 2005
Snowplow and mount assembly
DOUGLAS DYNAMICS LLC43 citations92
US8850724B2Oct 7, 2014
Plow with pivoting blade wing
DOUGLAS DYNAMICS LLC21 citations91
US5806214ASep 15, 1998
Support wheels mounted in the vicinity of the center of gravity of a snowplow
DOUGLAS DYNAMICS LLC63 citations91
US6941685B2Sep 13, 2005
Snowplow assembly
DOUGLAS DYNAMICS LLC84 citations90
US5806213ASep 15, 1998
Rotatable support wheels for a snowplow
DOUGLAS DYNAMICS LLC32 citations90
USRE35700EDec 30, 1997
Removable snowplow assembly with pivotable lift stand
DOUGLAS DYNAMICS LLC43 citations90
US9200418B2Dec 1, 2015
Method and apparatus for installing cutting edges on V-blade plow
DOUGLAS DYNAMICS LLC18 citations89
US7681334B2Mar 23, 2010
Snowplow and mount assembly
DOUGLAS DYNAMICS LLC16 citations89
US7430821B2Oct 7, 2008
Snowplow and mount assembly
DOUGLAS DYNAMICS LLC16 citations89
US6012240AJan 11, 2000
Vehicle mountable snowplow
DOUGLAS DYNAMICS LLC54 citations89
USD904654SDec 8, 2020
Snow plow headlamp
DOUGLAS DYNAMICS LLC27 citations88
USD880027SMar 31, 2020
Snow plow headlamp
DOUGLAS DYNAMICS LLC20 citations88
US9869067B2Jan 16, 2018
Snow plow and mount assembly
DOUGLAS DYNAMICS LLC23 citations88
US6050008AApr 18, 2000
Vehicle mounted accessory assembly
DOUGLAS DYNAMICS LLC48 citations88
US7400058B1Jul 15, 2008
Vehicle mounted accessory with multiplexing
DOUGLAS DYNAMICS LLC26 citations84
US7152883B2Dec 26, 2006
Ballast assembly for vehicles
DOUGLAS DYNAMICS LLC18 citations84
US5727835AMar 17, 1998
Alarmed truck mounted tool box
DOUGLAS DYNAMICS LLC36 citations81
US7797859B2Sep 21, 2010
Snowplow and mount assembly
DOUGLAS DYNAMICS LLC12 citations80
US10960363B2Mar 30, 2021
Brine machine and method
DOUGLAS DYNAMICS LLC6 citations75
US10793056B2Oct 6, 2020
Snow plow headlamp
DOUGLAS DYNAMICS LLC2 citations70
US9822563B2Nov 21, 2017
Method and apparatus for installing cutting edges on a V-blade plow
DOUGLAS DYNAMICS LLC5 citations69
US11427978B2Aug 30, 2022
Snow plow and mount assembly
DOUGLAS DYNAMICS LLC0 citations57
US11332899B2May 17, 2022
Snow plow and mount assembly
DOUGLAS DYNAMICS LLC0 citations57
US10900183B2Jan 26, 2021
Snow plow and mount assembly
DOUGLAS DYNAMICS LLC0 citations57
US11555282B2Jan 17, 2023
Snow plow and mount assembly
DOUGLAS DYNAMICS LLC1 citations56
US7737576B2Jun 15, 2010
Vehicle mounted accessory with multiplexing
DOUGLAS DYNAMICS LLC2 citations54
US12188190B2Jan 7, 2025
Spreader with shaftless auger
DOUGLAS DYNAMICS LLC0 citations53
US11731088B2Aug 22, 2023
Brine machine and method
DOUGLAS DYNAMICS LLC0 citations53
US11680379B2Jun 20, 2023
Spreader with shaftless auger
DOUGLAS DYNAMICS LLC0 citations53
US12497743B2Dec 16, 2025
Convertible snow plow
DOUGLAS DYNAMICS LLC0 citations52
US10858559B2Dec 8, 2020
Material mixing system
DOUGLAS DYNAMICS LLC0 citations48
US11499280B2Nov 15, 2022
Snow plow and mount assembly
DOUGLAS DYNAMICS LLC0 citations45
US12497744B2Dec 16, 2025
Containment plow
DOUGLAS DYNAMICS LLC0 citations38
US12281453B2Apr 22, 2025
Snow plow assembly
DOUGLAS DYNAMICS LLC0 citations38
US12595632B2Apr 7, 2026
Snow and ice spreader and sprayer
DOUGLAS DYNAMICS LLC0 citations31
US11535986B2Dec 27, 2022
Spreader
DOUGLAS DYNAMICS LLC0 citations30