EATON-WILLIAMS GROUP LIMITED

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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 122
 
  
 
F22D PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER; FEED-WATER SUPPLY; CONTROLLING WATER LEVEL; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN BOILERS 19

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5440668 Electrode boiler with automatic drain control responsive to measured electrode currentFeb 18, 94Aug 08, 95[F22B, F22D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2013/0126,142 REAR DOOR HEAT EXCHANGERAbandonedMay 12, 11May 23, 13[F28D, F28F]
2010/0003,019 Humidifier UnitAbandonedFeb 26, 07Jan 07, 10[B23P, F24F]
2005/0061,719 Humidification systemAbandonedJul 06, 04Mar 24, 05[B01D]
6276158 Heat exchange equipmentExpiredJul 21, 99Aug 21, 01[F25B]
5927615 Steam outlet assemblyExpiredAug 07, 97Jul 27, 99[B05B]
5392739 Steam-raising systemExpiredJun 25, 93Feb 28, 95[F22D]
5363471 Electrode boilers with cylinder full sensor controlExpiredJan 29, 93Nov 08, 94[H05B]
4952779 Humidifier control meansExpiredMar 20, 89Aug 28, 90[H05B]
4938173 Fluid systemExpiredOct 11, 88Jul 03, 90[F22B]
4935601 Automatic control circuitry for an electrode boiler humidifierExpiredMay 05, 87Jun 19, 90[H05B]
4418269 Multi-electrode boilerExpiredMar 17, 81Nov 29, 83[H05B]

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