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Patent (528611) 528611
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generation (529045) 529045
electricity (528853) 528853
apparatus for conversion between ac and ac, between ac and dc,or between dc and dc, and for use with mains or similar powersupply systems (528611) 528611
control or regulation thereof (528611) 528611
conversion of dc or ac input power into surge outputpower (528611) 528611
conversion or distribution of electric power (528611) 528611
general tagging of cross-sectional technologies spanning over several sections of the ipc (128307) 128307
general tagging of new technological developments (128307) 128307
technical subjects covered by former uspc cross-reference art collections [xracs] and digests (128307) 128307
technologies or applications for mitigation or adaptation againstclimate change (111990) 111990
physics (92672) 92672
circuit arrangements or systems for supplying or distributingelectric power (78815) 78815
systems for storing electric energy (78815) 78815
climate change mitigation technologies related to buildings,e.g. housing, house appliances or related end-userapplications (71945) 71945
basic electric elements (59980) 59980
electric techniques not otherwise provided for (56057) 56057
controlling (53936) 53936
regulating (53935) 53935
basic electronic circuitry (51937) 51937
systems for regulating electric or magnetic variables (50082) 50082
control or regulation of electric motors, electric generatorsor dynamo-electric converters (44328) 44328
controlling transformers, reactors or choke coils (44328) 44328
pulse technique (40473) 40473
transporting (36579) 36579
performing operations (36577) 36577
electric heating (31844) 31844
electric lighting not otherwise provided for (31835) 31835
semiconductor devices (29132) 29132
emergency protective circuit arrangements (28763) 28763
electric solid state devices not otherwise provided for (28695) 28695
technical subjects covered by former uspc (26595) 26595
reduction of greenhouse gas [ghg] emissions, related to energygeneration, transmission or distribution (24873) 24873
vehicles in general (24159) 24159
printed circuits (21825) 21825
casings or constructional details of electric apparatus (21709) 21709
manufacture of assemblages of electrical components (21709) 21709
electric equipment or propulsion of electrically-propelledvehicles (20215) 20215
electrodynamic brake systems for vehicles, in general (20215) 20215
magnetic suspension or levitation for vehicles (20215) 20215
technical subjects covered by former us classification (20042) 20042
testing (19578) 19578
measuring (18347) 18347
transformers (16989) 16989
engineering, electrical & electronic (16630) 16630
climate change mitigation technologies related totransportation (16413) 16413
magnets (16100) 16100
inductances (15949) 15949
selection of materials for their magnetic properties (15935) 15935
measuring electric variables (15615) 15615
measuring magnetic variables (15615) 15615
mechanical engineering (13577) 13577
lighting (13497) 13497
heating (13469) 13469
weapons (13314) 13314
blasting (13246) 13246
electric communication technique (12903) 12903
dc-dc power converters (11427) 11427
counting (10896) 10896
computing (10868) 10868
calculating (10860) 10860
dc motors (10404) 10404
switches (10299) 10299
voltage (9653) 9653
voltage control (9611) 9611
electric digital data processing (9498) 9498
capacitors (9457) 9457
climate change mitigation technologies in the production orprocessing of goods (7651) 7651
technical subjects covered by former uspc cross-reference artcollections [xracs] and digests (7010) 7010
inductors (6647) 6647
dynamo-electric machines (6429) 6429
information storage (6347) 6347
converters (6263) 6263
static stores (5852) 5852
amplifiers (5742) 5742
electric potential (5498) 5498
dc-dc converter (5355) 5355
pictorial communication, e.g. television (5303) 5303
control systems (5297) 5297
processes or means, e.g. batteries, for the direct conversionof chemical into electrical energy (5258) 5258
topology (5073) 5073
education (5053) 5053
inverters (4965) 4965
mathematical model (4947) 4947
transmission (4845) 4845
pulse width modulation (4704) 4704
advertising (4703) 4703
cryptography (4703) 4703
display (4692) 4692
seals (4688) 4688
machine tools (4658) 4658
metal-working not otherwise provided for (4623) 4623
arrangements or circuits for control of indicating devicesusing static means to present variable information (4455) 4455
welding (4332) 4332
analysis (4298) 4298
cladding or plating by soldering or welding (4238) 4238
cutting by applying heat locally, e.g. flame cutting (4238) 4238
soldering or unsoldering (4238) 4238
working by laser beam (4238) 4238
physics, applied (4161) 4161
direct current (4059) 4059
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Robarts - Stacks (1961) 1961
Collection Dvlpm't (Acquisitions) - Vendor file (574) 574
UofT at Mississauga - Stacks (423) 423
UTL at Downsview - May be requested (381) 381
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Victoria University Emmanuel College - Stacks (8) 8
Earth Sciences (Noranda) - Stacks (6) 6
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Sunnybrook Health Sciences Centre - Holland Stacks (1) 1
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English (580589) 580589
Chinese (103299) 103299
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Russian (10178) 10178
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