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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 39,355
236 Automatic temperature and humidity regulation 9,471
136 Batteries: thermoelectric and photoelectric 16,807
219 Electric heating 98,582
313 Electric lamp and discharge devices 74,686
314 Electric lamp and discharge devices: consumable electrodes 67
315 Electric lamp and discharge devices: systems 61,448
445 Electric lamp or space discharge component or device manufacturing 9,742
363 Electric power conversion systems 32,239
392 Electric resistance heating devices 11,359
381 Electrical audio signal processing systems and devices 46,444
439 Electrical connectors 116,404
310 Electrical generator or motor structure 88,743
377 Electrical pulse counters, pulse dividers, or shift registers: circuits and systems 11,165
338 Electrical resistors 16,219
307 Electrical transmission or interconnection systems 28,897
320 Electricity: battery or capacitor charging or discharging 20,717
200 Electricity: circuit makers and breakers 41,672
174 Electricity: conductors and insulators 69,418
361 Electricity: electrical systems and devices 162,457
337 Electricity: electrothermally or thermally actuated switches 10,097
335 Electricity: magnetically operated switches, magnets, and electromagnets 22,001
324 Electricity: measuring and testing 116,101
318 Electricity: motive power systems 70,808
388 Electricity: motor control systems 5,500
323 Electricity: power supply or regulation systems 27,817
322 Electricity: single generator systems 5,670
191 Electricity: transmission to vehicles 1,670
399 Electrophotography 74,350
110 Furnaces 17,051
48 Gas: heating and illuminating 9,359
165 Heat exchange 57,871
432 Heating 14,528
237 Heating systems 4,320
218 High-voltage switches with arc preventing or extinguishing devices 5,217
336 Inductor devices 17,203
373 Industrial electric heating furnaces 5,229
D26 Lighting 24,172
327 Miscellaneous active electrical nonlinear devices, circuits, and systems 103,318
332 Modulators 3,991
60 Power plants 84,268
290 Prime-mover dynamo plants 11,056
250 Radiant energy 143,055
220 Receptacles 66,346
333 Wave transmission lines and networks 38,325
140 Wireworking 2,917
 
 
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