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Class Information
Number: 392/324
Name: Electric resistance heating devices > Heating devices (class 219 subclass 200) > Fluid-in-circuit type heater > Steam or vapor generator
Description: Subject matter wherein the fluid-in-circuit heater includes means for converting a fluid material to a vapor or gas state.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7454308 |
System for detection of waterlogging in steam heating coils |
Nov. 18, 2008 |
| 7055763 |
Mist generating device |
Jun. 6, 2006 |
| 7053341 |
Method and apparatus for drum level control for drum-type boilers |
May. 30, 2006 |
| 6792963 |
Coolant fed humidifier having siphon drain and method therefor |
Sep. 21, 2004 |
| 6681998 |
Aerosol generator having inductive heater and method of use thereof |
Jan. 27, 2004 |
| 6078729 |
Foam, drain and fill control system for humidifier |
Jun. 20, 2000 |
| 6067403 |
Household electrical steam generator with stabilized boiler water level, particularly for smoothing irons |
May. 23, 2000 |
| 5943949 |
Indoor grille |
Aug. 31, 1999 |
| 5880438 |
Steam sterilization apparatus and control system |
Mar. 9, 1999 |
| 5805765 |
Wall-mounted steam generating apparatus and a steam head |
Sep. 8, 1998 |
| 5739504 |
Control system for boiler and associated burner |
Apr. 14, 1998 |
| 5619611 |
Device for removing downhole deposits utilizing tubular housing and passing electric current through fluid heating medium contained therein |
Apr. 8, 1997 |
| 5598766 |
Control circuit for an automatic cooking apparatus |
Feb. 4, 1997 |
| 5408917 |
Appliance for preparation of hot drinks |
Apr. 25, 1995 |
| 5286942 |
Induction steam humidifier |
Feb. 15, 1994 |
| 5222185 |
Portable water heater utilizing combined fluid-in-circuit and induction heating effects |
Jun. 22, 1993 |
| 5076467 |
Dental washer |
Dec. 31, 1991 |
| RE33414 |
Electric steam humidifier |
Oct. 30, 1990 |
| 4939343 |
Steam generator for steam baths |
Jul. 3, 1990 |
| 4783585 |
Downhole electric steam or hot water generator for oil wells |
Nov. 8, 1988 |
| 4748314 |
Device for the rapid vaporization of a liquid |
May. 31, 1988 |
| 4439669 |
Instantaneous electrode-type water heater |
Mar. 27, 1984 |
| 4378846 |
Enhanced oil recovery apparatus and method |
Apr. 5, 1983 |
| 4370543 |
Shower-sauna instantaneous electric steam or hot water supply unit |
Jan. 25, 1983 |
| 4266116 |
Electrode-type steam generating device for generating superheated steam |
May. 5, 1981 |
| 4105894 |
Steam heated hot air furnace having an electric steam boiler |
Aug. 8, 1978 |
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