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conversion or distribution of electric power (970624) 970624
electricity (970624) 970624
generation (970624) 970624
dynamo-electric machines (905009) 905009
blasting (193930) 193930
heating (193930) 193930
lighting (193930) 193930
mechanical engineering (193930) 193930
weapons (193930) 193930
performing operations (123753) 123753
transporting (123753) 123753
control or regulation of electric motors, electric generatorsor dynamo-electric converters (111621) 111621
controlling transformers, reactors or choke coils (111621) 111621
engineering elements and units (88813) 88813
general measures for producing and maintaining effectivefunctioning of machines or installations (88813) 88813
thermal insulation in general (88813) 88813
general tagging of cross-sectional technologies spanning over several sections of the ipc (88779) 88779
general tagging of new technological developments (88779) 88779
technical subjects covered by former uspc cross-reference art collections [xracs] and digests (88779) 88779
basic electric elements (77334) 77334
physics (75689) 75689
positive displacement machines for liquids (49894) 49894
pumps for liquids or elastic fluids (49894) 49894
technical subjects covered by former uspc (48247) 48247
technologies or applications for mitigation or adaptation againstclimate change (44990) 44990
vehicles in general (44710) 44710
technical subjects covered by former us classification (41112) 41112
gearing (31327) 31327
shafts (31117) 31117
bearings (31066) 31066
elements or crankshaft mechanisms (31066) 31066
flexible shafts (31066) 31066
rotary bodies other than gearing elements (31066) 31066
magnets (30004) 30004
inductances (30003) 30003
selection of materials for their magnetic properties (30003) 30003
transformers (30003) 30003
non-positive displacement pumps (29600) 29600
machines or engines for liquids (28288) 28288
or a reactive propulsive thrust, not otherwise provided for (28288) 28288
producing mechanical power (28288) 28288
wind, spring weight and miscellaneous motors (28288) 28288
measuring (28125) 28125
testing (28125) 28125
current collectors (27903) 27903
line connectors (27903) 27903
combustion engines (25403) 25403
hot-gas or combustion-product engine plants (25403) 25403
climate change mitigation technologies related totransportation (22072) 22072
electric equipment or propulsion of electrically-propelledvehicles (20377) 20377
electrodynamic brake systems for vehicles, in general (20377) 20377
magnetic suspension or levitation for vehicles (20377) 20377
reduction of greenhouse gas [ghg] emissions, related to energygeneration, transmission or distribution (20145) 20145
pumps (19162) 19162
human necessities (16900) 16900
arrangement or mounting of plural diverse prime-movers invehicles (16837) 16837
arrangement or mounting of propulsion units or oftransmissions in vehicles (16837) 16837
arrangements in connection with cooling, air intake, gasexhaust or fuel supply of propulsion units, in vehicles (16837) 16837
auxiliary drives for vehicles (16837) 16837
instrumentation or dashboards for vehicles (16837) 16837
brakes (15557) 15557
clutches (15557) 15557
couplings for transmitting rotation (15557) 15557
wind motors (15264) 15264
engine plants in general (15082) 15082
machines or engines in general (15082) 15082
steam engines (15082) 15082
circuit arrangements or systems for supplying or distributingelectric power (14400) 14400
systems for storing electric energy (14400) 14400
information storage (13927) 13927
information storage based on relative movement between recordcarrier and transducer (13868) 13868
machine tools (13823) 13823
metal-working not otherwise provided for (13823) 13823
fixed constructions (12765) 12765
controlling (12600) 12600
regulating (12600) 12600
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 (11640) 11640
control or regulation thereof (11640) 11640
conversion of dc or ac input power into surge outputpower (11640) 11640
electric techniques not otherwise provided for (11370) 11370
land vehicles for travelling otherwise than on rails (11219) 11219
chemistry (10951) 10951
metallurgy (10951) 10951
indexing schemes relating to engines or pumps in varioussubclasses of classes f01-f04 (9855) 9855
casings or constructional details of electric apparatus (9441) 9441
manufacture of assemblages of electrical components (9441) 9441
printed circuits (9441) 9441
textiles (8919) 8919
arrangements for measuring two or more variables not coveredin a single other subclass (8770) 8770
measuring not specially adapted for a specific variable (8770) 8770
measuring or testing not otherwise provided for (8770) 8770
tariff metering apparatus (8770) 8770
technical subjects covered by former uspc cross-reference artcollections [xracs] and digests (8756) 8756
means for damping vibration (8671) 8671
shock-absorbers (8671) 8671
springs (8671) 8671
electric machines not otherwise provided for (8626) 8626
combined heating and refrigeration systems (8363) 8363
heat pump systems (8363) 8363
liquefaction solidification of gases (8363) 8363
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English (801822) 801822
Chinese (184301) 184301
German (134490) 134490
French (131113) 131113
Japanese (44287) 44287
Korean (32630) 32630
Russian (15491) 15491
Spanish (10857) 10857
Portuguese (5754) 5754
Italian (5492) 5492
Swedish (2958) 2958
Danish (1932) 1932
Finnish (1533) 1533
Polish (1421) 1421
Dutch (1300) 1300
Norwegian (1193) 1193
Romanian (1041) 1041
Ukrainian (789) 789
Czech (572) 572
Turkish (362) 362
Hungarian (314) 314
Slovenian (275) 275
Bulgarian (246) 246
Latvian (185) 185
Greek (136) 136
Serbian (131) 131
Slovak (117) 117
Indonesian (78) 78
Croatian (73) 73
Hebrew (56) 56
Arabic (37) 37
Lithuanian (34) 34
Estonian (30) 30
Icelandic (19) 19
Moldavian (5) 5
Bosnian (3) 3
more...
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