Allen Engineering Corporation

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
E01C CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR 2410
 
  
 
B01D SEPARATION 1133
 
  
 
B60P VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS 137

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9068300 Riding trowel with CVT clutch moduleSep 26, 14Jun 30, 15[E01C, E04F]
9068301 Single to dual stick trowel and steering conversionSep 26, 14Jun 30, 15[B62D, E01C]
8360680 Hydraulic riding trowels with automatic load sensingMar 09, 10Jan 29, 13[E01C]
7690864 Hydraulic riding trowel with automatic load sensing systemDec 22, 08Apr 06, 10[E01C]
7316523 Acoustically matched method and apparatus for screeding concreteJan 25, 05Jan 08, 08[E01C]
7114876 Acoustically matched concrete finishing pansDec 21, 04Oct 03, 06[E01C]
7108449 Method and apparatus for acoustically matched slip form concrete applicationDec 21, 04Sep 19, 06[E01C]
6955404 Sequential remote dumping control for power buggiesFeb 12, 04Oct 18, 05[B60P]
6582153 Edge guarded power riding trowelJan 11, 02Jun 24, 03[E01C]
D474203 Riding trowel with rotatable ring edge guardJan 11, 02May 06, 03[1503]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6857815 Acoustic impedance matched concrete finishingExpiredJun 12, 03Feb 22, 05[E01C]
6089787 Transformable two-person floating screed with automatic grade controlExpiredMay 26, 98Jul 18, 00[E01C]
6019433 Concrete saw with stabilized carriage and blade controlExpiredOct 24, 97Feb 01, 00[B26D, B28D]
5988938 Compartmentalized access shroud system for riding trowelsExpiredDec 23, 97Nov 23, 99[E01C]
5967696 Riding trowel with variable ratio transmissionExpiredJan 16, 98Oct 19, 99[E01C]
5934823 Quick access shroud system for riding trowelsExpiredDec 15, 97Aug 10, 99[E01C]
5803658 Riding trowel with counter rotating rotorsExpiredJan 15, 97Sep 08, 98[E01C]
5685667 High performance contra-rotating riding trowelExpiredJan 16, 96Nov 11, 97[E01L]
5658089 Buffered trowel guard clearance systemExpiredDec 21, 95Aug 19, 97[E01C]
5480257 Concrete riding trowel guard clearance systemExpiredDec 21, 93Jan 02, 96[F01C]
5480258 Variable width, twin engine riding trowelExpiredDec 30, 93Jan 02, 96[E01C]
5476342 Obstacle bypass system for concrete constructionExpiredDec 21, 93Dec 19, 95[E01C]
D344736 Riding trowel for concrete finishingExpiredJan 27, 92Mar 01, 94[]
D340340 Riding trowel cranking dolly wheel assemblyExpiredOct 18, 91Oct 12, 93[]
5108220 Light weight, fast steering riding trowelExpiredJul 13, 90Apr 28, 92[E01C]
D323510 Riding trowelExpiredMay 21, 90Jan 28, 92[]
4798494 Floating vibrational screedExpiredOct 28, 87Jan 17, 89[E01C]
4741643 Laterally translatable, carriage-mounted, concrete finishing apparatusExpiredDec 24, 86May 03, 88[E01C]
4710054 Material spreader systemExpiredNov 04, 85Dec 01, 87[E01C]
4702640 Rotating tube concrete finisherExpiredJul 23, 86Oct 27, 87[E01C]

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