DOUGLAS DYNAMICS, L.L.C.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
E01H STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; CLEANING LAND; DISPERSING FOG IN GENERAL 147
 
  
 
A01C PLANTING; SOWING; FERTILISING 228
 
  
 
B01F MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING 141
 
  
 
B02C CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN 134
 
  
 
B60L ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL 175
 
  
 
C09K MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR194
 
  
 
H05B ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR 1110

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2016/0138,233 SNOW PLOW AND MOUNT ASSEMBLYNov 13, 14May 19, 16[E01H]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9890310 Material mixing systemAug 15, 14Feb 13, 18[C09K, B02C, B01F]
9869067 Snow plow and mount assemblyNov 13, 14Jan 16, 18[E01H]
9271441 Spreader deviceJun 20, 14Mar 01, 16[E01H, A01C]
7400058 Vehicle mounted accessory with multiplexingOct 29, 04Jul 15, 08[B60L]
7134227 Adjustable wing plowApr 29, 04Nov 14, 06[E01H]
6944978 Snowplow and mount assemblyJun 11, 01Sep 20, 05[E01H]
6941685 Snowplow assemblyOct 29, 02Sep 13, 05[E01H]
6928757 Snowplow mounting assemblyJan 09, 03Aug 16, 05[E01H]
6615513 Draw latch assembly for mounting a plow to a vehicleMar 15, 02Sep 09, 03[E01H]
6442877 Plow with rear mounted, adjustable wingOct 12, 00Sep 03, 02[C01H]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2009/0282,706 V-Blade Snow Plow With Improved Cutting EdgeAbandonedMay 15, 08Nov 19, 09[E01H]
2002/0171,291 Vehicle mounted accessory with multiplexingAbandonedMar 21, 02Nov 21, 02[B60L]
5806213 Rotatable support wheels for a snowplowExpiredJan 06, 97Sep 15, 98[E01H]
5806214 Support wheels mounted in the vicinity of the center of gravity of a snowplowExpiredJan 06, 97Sep 15, 98[E01H]
5727835 Alarmed truck mounted tool boxExpiredApr 23, 96Mar 17, 98[B60R]
4999935 Hydraulic system and apparatus for use with vehicle accessory unitsExpiredMay 31, 90Mar 19, 91[E01H]

Top Inventors for This Owner

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