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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Electrical & Energy

Class Number Class Name Patents
330 Amplifiers 33,291
236 Automatic temperature and humidity regulation 8,281
136 Batteries: thermoelectric and photoelectric 12,780
219 Electric heating 88,074
313 Electric lamp and discharge devices 59,902
314 Electric lamp and discharge devices: consumable electrodes 53
315 Electric lamp and discharge devices: systems 49,506
445 Electric lamp or space discharge component or device manufacturing 7,839
363 Electric power conversion systems 26,147
392 Electric resistance heating devices 9,944
381 Electrical audio signal processing systems and devices 29,863
439 Electrical connectors 100,434
310 Electrical generator or motor structure 72,841
377 Electrical pulse counters, pulse dividers, or shift registers: circuits and systems 10,137
338 Electrical resistors 15,090
307 Electrical transmission or interconnection systems 23,152
320 Electricity: battery or capacitor charging or discharging 12,960
200 Electricity: circuit makers and breakers 37,885
174 Electricity: conductors and insulators 58,172
361 Electricity: electrical systems and devices 126,870
337 Electricity: electrothermally or thermally actuated switches 9,136
335 Electricity: magnetically operated switches, magnets, and electromagnets 18,621
324 Electricity: measuring and testing 97,820
318 Electricity: motive power systems 59,286
388 Electricity: motor control systems 5,186
323 Electricity: power supply or regulation systems 21,247
322 Electricity: single generator systems 4,926
191 Electricity: transmission to vehicles 1,499
399 Electrophotography 55,371
110 Furnaces 16,022
48 Gas: heating and illuminating 7,504
165 Heat exchange 50,689
432 Heating 13,879
237 Heating systems 3,956
218 High-voltage switches with arc preventing or extinguishing devices 4,545
336 Inductor devices 13,751
373 Industrial electric heating furnaces 4,988
D26 Lighting 19,046
327 Miscellaneous active electrical nonlinear devices, circuits, and systems 86,566
332 Modulators 3,301
60 Power plants 67,616
290 Prime-mover dynamo plants 8,036
250 Radiant energy 119,582
220 Receptacles 57,024
333 Wave transmission lines and networks 33,257
140 Wireworking 2,748
 
 
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