DUPPS COMPANY, THE

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B02C CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN 233
 
  
 
B22D CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES 148
 
  
 
B30B PRESSES IN GENERAL; PRESSES NOT OTHERWISE PROVIDED FOR 121
 
  
 
F26B DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM 129

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8177152 Asphalt shingle recycling systemMar 11, 11May 15, 12[B02C]
7913940 Asphalt shingle recycling system and methodMar 09, 09Mar 29, 11[B02C]
5555639 Rotary drum dryerMay 18, 95Sep 17, 96[F26B]
5188023 Cast formed bi-metallic worm assembly and methodOct 30, 91Feb 23, 93[B22D, B30B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2013/0199,383 HIGH COMPRESSION SHAFT CONFIGURATION AND RELATED METHOD FOR SCREW PRESS SYSTEMS USED IN RENDERING APPLICATIONSAbandonedJan 31, 13Aug 08, 13[B30B]
2004/0016,352 Continous conditioning method and apparatusAbandonedMay 30, 03Jan 29, 04[A23L]
6033716 Animal feeds comprising formulated poultry bio-solids and growing house litterExpiredOct 13, 98Mar 07, 00[A23C]
5278325 Vegetable oil extraction processExpiredJul 30, 90Jan 11, 94[C07C]
5088397 Cast formed bi-metallic worm assemblyExpiredJan 11, 91Feb 18, 92[B30B]
4996919 Bi-metal feed screw for screw pressesExpiredOct 19, 89Mar 05, 91[B30B]
4945657 Rotary drum dryer with improved premixing assemblyExpiredAug 23, 89Aug 07, 90[F26B]
4894930 Rotary drum dryer with nonconducting nonstick surfaceExpiredNov 04, 88Jan 23, 90[F26B]
4802288 Rotary drum dryer and methodExpiredNov 27, 87Feb 07, 89[F26B]
4791864 Drainage system for expressing fibrous materialsExpiredJul 20, 87Dec 20, 88[B30B]
4729176 Rotary drum dryer and methodExpiredApr 01, 87Mar 08, 88[F26B]
4619789 Pretreatment process for renderingExpiredDec 27, 85Oct 28, 86[C11B]

Top Inventors for This Owner

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