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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 33,359
236 Automatic temperature and humidity regulation 8,292
136 Batteries: thermoelectric and photoelectric 12,795
219 Electric heating 88,223
313 Electric lamp and discharge devices 60,028
314 Electric lamp and discharge devices: consumable electrodes 53
315 Electric lamp and discharge devices: systems 49,616
445 Electric lamp or space discharge component or device manufacturing 7,848
363 Electric power conversion systems 26,202
392 Electric resistance heating devices 9,957
381 Electrical audio signal processing systems and devices 29,946
439 Electrical connectors 100,618
310 Electrical generator or motor structure 72,968
377 Electrical pulse counters, pulse dividers, or shift registers: circuits and systems 10,140
338 Electrical resistors 15,109
307 Electrical transmission or interconnection systems 23,191
320 Electricity: battery or capacitor charging or discharging 13,016
200 Electricity: circuit makers and breakers 37,906
174 Electricity: conductors and insulators 58,286
361 Electricity: electrical systems and devices 127,224
337 Electricity: electrothermally or thermally actuated switches 9,138
335 Electricity: magnetically operated switches, magnets, and electromagnets 18,644
324 Electricity: measuring and testing 98,005
318 Electricity: motive power systems 59,419
388 Electricity: motor control systems 5,188
323 Electricity: power supply or regulation systems 21,307
322 Electricity: single generator systems 4,933
191 Electricity: transmission to vehicles 1,499
399 Electrophotography 55,534
110 Furnaces 16,037
48 Gas: heating and illuminating 7,510
165 Heat exchange 50,742
432 Heating 13,883
237 Heating systems 3,958
218 High-voltage switches with arc preventing or extinguishing devices 4,547
336 Inductor devices 13,762
373 Industrial electric heating furnaces 4,991
D26 Lighting 19,103
327 Miscellaneous active electrical nonlinear devices, circuits, and systems 86,719
332 Modulators 3,303
60 Power plants 67,786
290 Prime-mover dynamo plants 8,064
250 Radiant energy 119,891
220 Receptacles 57,102
333 Wave transmission lines and networks 33,291
140 Wireworking 2,750
 
 
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