TWIN CITY FAN COMPANIES, LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F04D NON-POSITIVE-DISPLACEMENT PUMPS1361
 
  
 
F24F AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING 243
 
  
 
B05B SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES 163
 
  
 
B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING 155
 
  
 
B21J FORGING; HAMMERING; PRESSING; RIVETING; FORGE FURNACES 119
 
  
 
B60S SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR133
 
  
 
E04F FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS 126
 
  
 
E21F SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINAGE IN OR OF MINES OR TUNNELS 112
 
  
 
F01D NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES 164
 
  
 
F25C PRODUCTION, WORKING, STORING OR DISTRIBUTION OF ICE 124

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2017/0341,094 TUNNEL FAN AND METHODMay 26, 17Nov 30, 17[E21F, B05B, F24F]
2017/0284,404 MOTOR COOLING DEVICE AND METHODAug 03, 15Oct 05, 17[F04D]
2017/0175,765 AIR JET DEVICE AND METHODDec 15, 16Jun 22, 17[B60S, F04D]
2016/0356,278 HOLLOW VANE FAN AND COOLING METHODJun 03, 16Dec 08, 16[F04D]
2016/0356,287 ASYMMETRIC VANE FAN AND METHODJun 03, 16Dec 08, 16[F04D]
2016/0061,222 COMPOSITE FAN HOUSING AND METHODSep 03, 14Mar 03, 16[F04D]
2015/0345,512 FAN HOUSING AND ASSEMBLY METHODMay 29, 14Dec 03, 15[F04D]
2015/0267,713 REDUCED WEIGHT RIGID HVAC FAN CONSTRUCTIONMar 20, 14Sep 24, 15[F04D]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8932013 Guide vane and inline fan assemblyOct 05, 12Jan 13, 15[F04D]
8758101 Tubular inline exhaust fan assemblySep 06, 11Jun 24, 14[F04D]
8025477 Plenum/plug fan assemblyAug 24, 05Sep 27, 11[F04D]
6457550 Weatherproof sound attenuating deviceMar 06, 01Oct 01, 02[E04F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2016/0138,606 CENTRIFUGAL FAN AND METHODAbandonedNov 19, 14May 19, 16[B21J, F04D, B21D]
2004/0254,037 Self-tensioning drive assembly configuration & methodologyAbandonedJun 10, 03Dec 16, 04[F16H]

Top Inventors for This Owner

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