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Class Information
Number: 219/501
Name: Electric heating > Heating devices > With power supply and voltage or current regulation or current control means > Automatic regulating or control means > Including semiconductor means (e.g., transistor)
Description: Subject matter wherein the regulating or control structure includes devices comprised of semiconductor material such as transistors.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7612311 |
Methods and systems for controlling electric heaters |
Nov. 3, 2009 |
| 7608805 |
Control system for battery powered heating device |
Oct. 27, 2009 |
| 7598476 |
Image forming apparatus having improved flicker characteristics and method thereof |
Oct. 6, 2009 |
| 7593789 |
Water flow detection system for a bathing unit |
Sep. 22, 2009 |
| 7586064 |
Method and system for providing thermostatic temperature control in an integrated circuit |
Sep. 8, 2009 |
| 7573005 |
Boil detection method and computer program |
Aug. 11, 2009 |
| 7566845 |
Overheat protection circuit for power supply devices and direct-current power supply device |
Jul. 28, 2009 |
| 7534979 |
Pressure-contact type rectifier with contact friction reducer |
May. 19, 2009 |
| 7495194 |
Heating apparatus and heating method |
Feb. 24, 2009 |
| 7491911 |
MEMS bubble generator for large stable vapor bubbles |
Feb. 17, 2009 |
| 7488921 |
Adaptive startup control method for electric drives |
Feb. 10, 2009 |
| 7485832 |
Method and circuit for preventing over-heat of heat-generating device |
Feb. 3, 2009 |
| 7454308 |
System for detection of waterlogging in steam heating coils |
Nov. 18, 2008 |
| 7429719 |
Self-regulating heater with a semiconductor heating element and method of heating |
Sep. 30, 2008 |
| 7423240 |
Pulse width modulated defroster |
Sep. 9, 2008 |
| 7423243 |
Heating system and method |
Sep. 9, 2008 |
| 7420142 |
Power control module for electrical appliances |
Sep. 2, 2008 |
| 7417209 |
Recording disk drive with reduced noise thermal flyheight control |
Aug. 26, 2008 |
| 7408134 |
Programmable switch |
Aug. 5, 2008 |
| 7358463 |
Switching power supply and method for stopping supply of electricity when electricity of switching power supply exceeds rated electricity |
Apr. 15, 2008 |
| 7351937 |
Control circuits for hot melt adhesive heater circuits and applicator heads |
Apr. 1, 2008 |
| 7329840 |
Heater lamp control apparatus and method to detect an inputted AC voltage and providing a pulse signal to correspond thereto |
Feb. 12, 2008 |
| 7304272 |
Systems and methods for adjusting parameters of a temperature sensor for settling time reduction |
Dec. 4, 2007 |
| 7304274 |
Control of a cooktop heating element |
Dec. 4, 2007 |
| 7301129 |
Control circuit for semiconductor device having overheating protection function |
Nov. 27, 2007 |
| 7282676 |
Integrating preconcentrator heat controller |
Oct. 16, 2007 |
| 7256371 |
Temperature control method for positive temperature coefficient type heating element |
Aug. 14, 2007 |
| 7241979 |
Temperature controller and temperature control method, and heating wire therefor |
Jul. 10, 2007 |
| 7223946 |
Method and device for control and diagnosis for the heating of a lambda probe |
May. 29, 2007 |
| 7211771 |
De-icing system for traffic signals |
May. 1, 2007 |
| 7202449 |
Brewing machine power management system and method |
Apr. 10, 2007 |
| 7189949 |
Power control system and method for regulating power provided to a heating device |
Mar. 13, 2007 |
| 7186956 |
Fuser-controlling apparatus for generating a power synchronization signal and detecting power voltage |
Mar. 6, 2007 |
| 7183518 |
System of food storage preparation and delivery in finished cooked state |
Feb. 27, 2007 |
| 7177534 |
System and method for controlling heating and ventilating systems |
Feb. 13, 2007 |
| 7151241 |
Controller and heating wire capable of preventing generation of electromagnetic waves |
Dec. 19, 2006 |
| 7138611 |
Heating structure and its temperature control method |
Nov. 21, 2006 |
| 7119308 |
Forced-air heater control system and method |
Oct. 10, 2006 |
| 7115843 |
High-frequency pulse oscillator |
Oct. 3, 2006 |
| 7112768 |
Temperature control system for a bathing unit |
Sep. 26, 2006 |
| 7109448 |
Control system for cooking appliance employing radiant cooking |
Sep. 19, 2006 |
| 7109447 |
Control system for cooking appliance employing convection and radiant cooking |
Sep. 19, 2006 |
| 7060948 |
Temperature control method and apparatus for driving polymerase chain reaction (PCR) chip |
Jun. 13, 2006 |
| 7050837 |
Mobile communication terminal apparatus including moisture detection |
May. 23, 2006 |
| 7046923 |
Immersion heater device for aquariums and the like |
May. 16, 2006 |
| 7012220 |
Alpha-numeric data entry and display for electronic oven control system |
Mar. 14, 2006 |
| 7005618 |
Clothes dryer apparatus and method |
Feb. 28, 2006 |
| 6984810 |
Heater control apparatus and method |
Jan. 10, 2006 |
| 6960744 |
Electrically tunable on-chip resistor |
Nov. 1, 2005 |
| 6953917 |
System and method for ensuring the qualification of a workman to perform a task having established required standards |
Oct. 11, 2005 |
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