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Class Information
Number: 122/441
Name: Liquid heaters and vaporizers > Feed heaters > Steam
Description: Subject matter comprising means for heating the feed water by means of live or exhaust steam.

Sub-classes under this class:

Class Number Class Name Patents
122/442 Injected 16

Patents under this class:

Patent Number Title Of Patent Date Issued
8635976 Economizer arrangement for steam generator Jan. 28, 2014
7552727 Stationary, solar-powered boiler for generating steam Jun. 30, 2009
7214354 Autoclave May. 8, 2007
6926874 Autoclave Aug. 9, 2005
6173680 Steam generator comprising an improved feedwater supply device Jan. 16, 2001
5476525 Steam condensate recovery component Dec. 19, 1995
5067446 Apparatus for degassing and heating water Nov. 26, 1991
4981113 Deaerator tray for a steam boiler feedwater heater system Jan. 1, 1991
4967699 Steam generator Nov. 6, 1990
4878457 Zero flash closed condensate boiler feedwater system Nov. 7, 1989
4864970 Clean steam generator and method Sep. 12, 1989
4858564 Feedwater heater with improved steam distribution Aug. 22, 1989
4679529 Steam generator feed water heater Jul. 14, 1987
4637350 System for recovering drain Jan. 20, 1987
4541366 Feed water preheater Sep. 17, 1985
4465027 Exhaust gas vapor generator Aug. 14, 1984
4461244 Vertical, collector-type high-pressure feed water preheater, with desuperheater and a device for separating the steam and water phases Jul. 24, 1984
4461346 Feedwater heater Jul. 24, 1984
4420373 Energy conversion method and system Dec. 13, 1983
4380431 Technique for elevating the temperature of a fluid Apr. 19, 1983
4357911 Rapid recovery hot water boiler Nov. 9, 1982
4347321 Method and apparatus for producing alcohol Aug. 31, 1982
4282070 Energy conversion method with water recovery Aug. 4, 1981
4254825 Multitubular heat exchanger Mar. 10, 1981
4249485 Feed water preheater Feb. 10, 1981
4226283 Multitubular heat exchanger Oct. 7, 1980
4224981 Feed-water heater for steam power plants Sep. 30, 1980
4219077 Multitubular heat exchanger used in a power plant Aug. 26, 1980
4207842 Mixed-flow feedwater heater having a regulating device Jun. 17, 1980
4205632 Feedwater preheater with device for separating moisture from moisture-bearing steam Jun. 3, 1980
4089304 Apparatus for supplying feedwater to a steam generator May. 16, 1978
4075978 Apparatus for heating a contaminated feedwater for steam flooding Feb. 28, 1978
3938588 Deaerating feedwater heater Feb. 17, 1976

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