Dema Engineering Company

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01F MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING 240
 
  
 
F16K VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING271
 
  
 
B05B SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES 163
 
  
 
F04F PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED 113
 
  
 
G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES 183
 
  
 
G05G CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY 131
 
  
 
0907 CLOSING MEANS AND ATTACHMENTS126

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9808773 Assembly for controlling eductive dispensingJun 03, 14Nov 07, 17[F16K, B05B, G05D, G05G, F04F, B01F]
9561481 Multi-chemical dispensing deviceJun 30, 14Feb 07, 17[B01F]
D682103 Bottle insertJan 11, 12May 14, 13[0907]
6607174 Dispensing apparatus with in-line actuatorOct 17, 01Aug 19, 03[F16K]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2012/0255,973 REFILLABLE CHEMICAL RESERVOIR SYSTEM FOR TRIGGER SPRAYERAbandonedApr 06, 11Oct 11, 12[B05B, B65B]
2010/0280,670 MAGNETIC FIELD SENSOR AND DISPENSER CONTROL SYSTEMAbandonedJul 14, 10Nov 04, 10[G05D, G01R]
7331488 Multi-chemical dispensing systemExpiredNov 15, 04Feb 19, 08[B67D]
2007/0205,231 Magnetic field sensor and dispenser control systemAbandonedMar 06, 06Sep 06, 07[D06F, B67D]
6648003 Backflow preventerExpiredAug 02, 01Nov 18, 03[E03C]
2003/0071,087 DISPENSING APPARATUS WITH REMOTE CONTROLAbandonedOct 17, 01Apr 17, 03[B67D]
6213353 Solid bowl feeder and equipment tray assemblyExpiredOct 05, 98Apr 10, 01[D06F]
5797420 ProportionerExpiredMay 20, 96Aug 25, 98[E03C]
5518020 ProportionerExpiredJun 14, 94May 21, 96[E03C]
5141016 Divertor valveExpiredApr 08, 91Aug 25, 92[F16K]
5123449 Selector valveExpiredFeb 28, 91Jun 23, 92[F16K]
4934651 Magnetically operated valve and timer assemblyExpiredOct 31, 89Jun 19, 90[F16K]
4815634 Vacuum actuated pumpExpiredMar 27, 87Mar 28, 89[E03C]
4276001 Fluid pump assemblyExpiredJan 15, 79Jun 30, 81[F04B]

Top Inventors for This Owner

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