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Patent (122753) 122753
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chemistry (128926) 128926
inorganic chemistry (123239) 123239
metallurgy (122777) 122777
compounds of the metals beryllium, magnesium, aluminium,calcium, strontium, barium, radium, thorium, or of therare-earth metals (122753) 122753
performing operations (41795) 41795
transporting (41795) 41795
physical or chemical processes or apparatus in general (30279) 30279
compounds thereof (23492) 23492
indexing scheme relating to structural and physical aspects ofsolid inorganic compounds (23433) 23433
non-metallic elements (22340) 22340
chemical or physical processes, e.g. catalysis or colloidchemistry (19976) 19976
their relevant apparatus (19976) 19976
dyes (17581) 17581
adhesives (17533) 17533
paints (17531) 17531
miscellaneous applications of materials (17523) 17523
miscellaneous compositions (17523) 17523
natural resins (17523) 17523
polishes (17523) 17523
ceramics (16191) 16191
compounds containing metals not covered by subclassesc01d or c01f (15977) 15977
cements (15576) 15576
concrete (15531) 15531
slag (15522) 15522
refractories (15520) 15520
artificial stone (15516) 15516
compositions thereof, e.g. mortars, concrete or like buildingmaterials (15516) 15516
lime, magnesia (15516) 15516
treatment of natural stone (15516) 15516
general tagging of cross-sectional technologies spanning over several sections of the ipc (14438) 14438
general tagging of new technological developments (14438) 14438
technical subjects covered by former uspc cross-reference art collections [xracs] and digests (14438) 14438
separation (14028) 14028
science & technology (10584) 10584
strontium (10514) 10514
compositions based thereon (9800) 9800
organic macromolecular compounds (9800) 9800
their preparation or chemical working-up (9800) 9800
technologies or applications for mitigation or adaptation againstclimate change (9722) 9722
preparation of carbon black (8729) 8729
treatment of inorganic materials, other than fibrous fillers,to enhance their pigmenting or filling properties (8729) 8729
ferrous or non-ferrous alloys (8667) 8667
treatment of alloys or non-ferrous metals (8667) 8667
materials for miscellaneous applications, not provided forelsewhere (8516) 8516
pretreatment of raw materials (7942) 7942
production and refining of metals (7942) 7942
electricity (7848) 7848
climate change mitigation technologies in the production orprocessing of goods (7331) 7331
use of inorganic or non-macromolecular organic substances ascompounding ingredients (7314) 7314
basic electric elements (7227) 7227
physics (7119) 7119
physical sciences (7050) 7050
nanotechnology (6839) 6839
human necessities (6753) 6753
treatment of water, waste water, sewage, or sludge (6702) 6702
manufacture or treatment of nanostructures (5914) 5914
measurement or analysis of nanostructures (5914) 5914
specific uses or applications of nanostructures (5914) 5914
textiles (5669) 5669
apparatus therefor (5636) 5636
technical subjects covered by former uspc (5508) 5508
compounds of alkali metals, i.e. lithium, sodium, potassium,rubidium, caesium, or francium (5409) 5409
organic chemistry (5368) 5368
hygiene (4935) 4935
medical or veterinary science (4933) 4933
paper-making (4812) 4812
production of cellulose (4812) 4812
technology (4801) 4801
preparations for medical, dental, or toilet purposes (4424) 4424
impregnating or coating of paper (4358) 4358
paper not otherwise provided for (4358) 4358
preparation thereof not covered by subclasses d21c or d21d (4358) 4358
pulp compositions (4358) 4358
treatment of finished paper not covered by class b31 or subclass d21g (4358) 4358
materials science (4316) 4316
compositions of macromolecular compounds (3767) 3767
heating (3696) 3696
mechanical engineering (3649) 3649
lighting (3643) 3643
weapons (3622) 3622
blasting (3615) 3615
technical subjects covered by former us classification (3299) 3299
inks (3052) 3052
chemical paint or ink removers (3048) 3048
coating compositions, e.g. paints, varnishes orlacquers (3048) 3048
correcting fluids (3048) 3048
filling pastes (3048) 3048
pastes or solids for colouring or printing (3048) 3048
use of materials therefor (3048) 3048
woodstains (3048) 3048
acyclic or carbocyclic compounds (2863) 2863
crystal growth (2618) 2618
chemical surface treatment (2542) 2542
coating by vacuum evaporation, by sputtering, by ion implantationor by chemical vapour deposition, in general (2542) 2542
coating material with metallic material (2542) 2542
coating metallic material (2542) 2542
diffusion treatment of metallic material (2542) 2542
inhibiting corrosion of metallic material or incrustation ingeneral (2542) 2542
semiconductor devices (2514) 2514
electric solid state devices not otherwise provided for (2489) 2489
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Gerstein Science - Stacks (8) 8
Royal Ontario Museum - Stacks (8) 8
Robarts - Stacks (7) 7
UofT at Scarborough - Stacks (6) 6
Physics - Stacks (5) 5
Earth Sciences (Noranda) - Stacks (4) 4
UTL at Downsview - May be requested (3) 3
UofT at Mississauga - Stacks (3) 3
Knox College (Caven) - Stacks (1) 1
Royal Ontario Museum - Periodical Stacks (1) 1
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English (117696) 117696
Chinese (20018) 20018
French (19434) 19434
German (14714) 14714
Korean (3974) 3974
Russian (3776) 3776
Japanese (3521) 3521
Spanish (2925) 2925
Portuguese (1775) 1775
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Italian (706) 706
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