C. Cowles & Company

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F22B METHODS OF STEAM GENERATION; STEAM BOILERS 320
 
  
 
F24D DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR 317
 
  
 
F24H FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, IN GENERAL 324
 
  
 
G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES 381
 
  
 
B23P OTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS 254
 
  
 
F23N REGULATING OR CONTROLLING COMBUSTION 219
 
  
 
G01F MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME 257
 
  
 
H05B ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR 2109
 
  
 
F16K VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING172
 
  
 
F22D PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER; FEED-WATER SUPPLY; CONTROLLING WATER LEVEL; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN BOILERS 19

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9851111 Thermal reduction through activity based thermal targeting to enhance heating system efficiencyJul 24, 14Dec 26, 17[F23N, G05D, F24D]
9416981 Temperature and low water monitoring for boiler systemsDec 08, 14Aug 16, 16[F24H, G01K, B23P, F24D, F22B, G01F, G06K]
8931708 Temperature and low water monitoring for boiler systemsApr 19, 13Jan 13, 15[F24H, B23P, F22B, G01F, G06K]
8844834 Thermal reduction through activity based thermal targeting to enhance heating system efficiencyOct 30, 09Sep 30, 14[G01M, F23N, F24D]
7891572 Temperature and low water monitoring for boiler systemsApr 05, 07Feb 22, 11[F22B]
7093611 Water feeder controller for boilerMay 31, 05Aug 22, 06[G05D]
6926028 Water feeder controller for boilerJan 20, 04Aug 09, 05[F24H]
6688329 Water feeder controller for boilerJul 06, 01Feb 10, 04[F16K, G05D]
6390027 Cycle control system for boiler and associated burnerMay 31, 00May 21, 02[H05B]
5739504 Control system for boiler and associated burnerJul 28, 95Apr 14, 98[H05B, F22D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2011/0122,918 TEMPERATURE AND LOW WATER MONITORING FOR BOILER SYSTEMSAbandonedJan 25, 11May 26, 11[G01K]
4791254 Flow switchExpiredDec 09, 87Dec 13, 88[H01H]

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