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Class Information
Number: 219/209
Name: Electric heating > Heating devices > Combined with diverse-type art device > Electrical devices
Description: Subject matter wherein the other art device comprises a device which is electrically operated or whose operative function is to control the condition of an electrical circuit, such as a motor or switch.










Sub-classes under this class:

Class Number Class Name Patents
219/210 Crystal or other vibratory device 82


Patents under this class:
1 2 3 4 5 6 7 8

Patent Number Title Of Patent Date Issued
5424510 Circuit and method of providing thermal compensation for a transistor to minimize offset voltage due to self-heating of associated devices Jun. 13, 1995
5420521 Burn-in module May. 30, 1995
5384448 Thermally stable solenoid utilizing wound electric heating wire Jan. 24, 1995
5369245 Method and apparatus for conditioning an electronic component having a characteristic subject to variation with temperature Nov. 29, 1994
5362942 Battery heating system using internal battery resistance Nov. 8, 1994
5329093 Burn-in apparatus for semiconductor integrated device Jul. 12, 1994
5309090 Apparatus for heating and controlling temperature in an integrated circuit chip May. 3, 1994
5302810 Method for rapid and uniform heating of a multilayer assembly comprising at least one thin layer based on an ion-conducting macromolecular material interleaved between two structures with high Apr. 12, 1994
5294776 Method of burning in a semiconductor device Mar. 15, 1994
5281792 Battery warmer Jan. 25, 1994
5268558 Temperature-controlled electronic circuit Dec. 7, 1993
5254839 Oven for burning in electronics modules Oct. 19, 1993
5247156 Apparatus for measuring physical properties of fluids Sep. 21, 1993
5233161 Method for self regulating CMOS digital microcircuit burn-in without ovens Aug. 3, 1993
5204509 Self regulating heated switch assembly Apr. 20, 1993
5198638 Retractable battery tray Mar. 30, 1993
5193669 Switch assembly Mar. 16, 1993
5175409 Self-soldering flexible circuit connector Dec. 29, 1992
5173585 Camera heating jacket Dec. 22, 1992
5172049 IC test equipment Dec. 15, 1992
5164661 Thermal control system for a semi-conductor burn-in Nov. 17, 1992
5148003 Modular test oven Sep. 15, 1992
5148124 Monolithic microwave integrated circuit noise generator and variable resistance device Sep. 15, 1992
5130842 Method for rapid and uniform heating of a transparent and/or reflecting multilayer optical system with polymeric solid electrolyte Jul. 14, 1992
5128514 Black radiator for use as an emitter in calibratable gas sensors Jul. 7, 1992
5126656 Burn-in tower Jun. 30, 1992
5122636 Movable device for heating substrates Jun. 16, 1992
5119215 LCD with self regulating PTC thermistor heating element Jun. 2, 1992
5117093 Maintenance of linearity of support beam May. 26, 1992
5089688 Composite circuit protection devices Feb. 18, 1992
5065932 Solder placement nozzle with inert cover gas and inert gas bleed Nov. 19, 1991
5064997 Composite circuit protection devices Nov. 12, 1991
5059767 Heater Oct. 22, 1991
5055656 Battery heating system using instantaneous excess capacity of a vehicle electrical power generating subsystem Oct. 8, 1991
5045666 Self-soldering flexible circuit connector Sep. 3, 1991
5042708 Solder placement nozzle assembly Aug. 27, 1991
5010233 Self regulating temperature heater as an integral part of a printed circuit board Apr. 23, 1991
5003156 Dual configuration connector port for burn-in systems Mar. 26, 1991
4990736 Generating electromagnetic fields in a self regulating temperature heater by positioning of a current return bus Feb. 5, 1991
4987289 Liquid crystal display heating system Jan. 22, 1991
4978914 Laminated board for testing electronic components Dec. 18, 1990
4929815 Heating resistor driving circuit which suppresses current spikes May. 29, 1990
4903501 Refrigerator air control heated baffle Feb. 27, 1990
4883214 Heated tool with heated support Nov. 28, 1989
4858556 Method and apparatus for physical vapor deposition of thin films Aug. 22, 1989
4856702 Method for manufacturing semiconductor components Aug. 15, 1989
4855572 Heater for use as either primary or auxiliary heat source and improved circuitry for controlling the heater Aug. 8, 1989
4829154 Planar heater for liquid crystal element May. 9, 1989
4820012 Electric wire Apr. 11, 1989
4819249 Device for determining the accuracy of a thermally-activated instrument Apr. 4, 1989

1 2 3 4 5 6 7 8










 
 
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