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after-treatment of single crystals or a homogeneouspolycrystalline material with defined structure (212827) 212827
apparatus therefor (212827) 212827
chemistry (212827) 212827
crystal growth (212827) 212827
metallurgy (212827) 212827
production of a homogeneous polycrystalline material withdefined structure (212827) 212827
refining by zone-melting of material (212827) 212827
single crystals or homogeneous polycrystalline material withdefined structure (212827) 212827
single-crystal-growth (212827) 212827
unidirectional solidification of eutectic material orunidirectional demixing of eutectoid material (212827) 212827
electricity (107286) 107286
basic electric elements (105162) 105162
electric solid state devices not otherwise provided for (96596) 96596
semiconductor devices (96596) 96596
general tagging of cross-sectional technologies spanning over several sections of the ipc (45751) 45751
general tagging of new technological developments (45751) 45751
technical subjects covered by former uspc cross-reference art collections [xracs] and digests (45751) 45751
chemical surface treatment (40964) 40964
coating by vacuum evaporation, by sputtering, by ion implantationor by chemical vapour deposition, in general (40964) 40964
coating material with metallic material (40964) 40964
coating metallic material (40964) 40964
diffusion treatment of metallic material (40964) 40964
inhibiting corrosion of metallic material or incrustation ingeneral (40964) 40964
coating by vacuum evaporation, by sputtering, by ionimplantation or by chemical vapour deposition, in general (39961) 39961
surface treatment of metallic material by diffusion into thesurface, by chemical conversion or substitution (39961) 39961
technical subjects covered by former uspc (37843) 37843
performing operations (32595) 32595
transporting (32595) 32595
inorganic chemistry (28331) 28331
technical subjects covered by former us classification (25123) 25123
compounds thereof (19390) 19390
non-metallic elements (19342) 19342
physics (18582) 18582
technical subjects covered by former uspc cross-reference artcollections [xracs] and digests (18459) 18459
technologies or applications for mitigation or adaptation againstclimate change (10258) 10258
physical or chemical processes or apparatus in general (9769) 9769
nanotechnology (8750) 8750
compounds containing metals not covered by subclassesc01d or c01f (8596) 8596
manufacture or treatment of nanostructures (8071) 8071
measurement or analysis of nanostructures (8071) 8071
specific uses or applications of nanostructures (8071) 8071
artificial stone (7991) 7991
cements (7991) 7991
ceramics (7991) 7991
compositions thereof, e.g. mortars, concrete or like buildingmaterials (7991) 7991
concrete (7991) 7991
lime, magnesia (7991) 7991
refractories (7991) 7991
slag (7991) 7991
treatment of natural stone (7991) 7991
measuring (7625) 7625
testing (7625) 7625
optics (7571) 7571
chemical or physical processes, e.g. catalysis or colloidchemistry (7242) 7242
their relevant apparatus (7242) 7242
reduction of greenhouse gas [ghg] emissions, related to energygeneration, transmission or distribution (6839) 6839
devices using stimulated emission (6456) 6456
blasting (5927) 5927
heating (5927) 5927
lighting (5927) 5927
mechanical engineering (5927) 5927
weapons (5927) 5927
climate change mitigation technologies in the production orprocessing of goods (5808) 5808
ferrous or non-ferrous alloys (5719) 5719
treatment of alloys or non-ferrous metals (5719) 5719
glass (5256) 5256
mineral or slag wool (5256) 5256
adhesives (5077) 5077
dyes (5077) 5077
miscellaneous applications of materials (5077) 5077
miscellaneous compositions (5077) 5077
natural resins (5077) 5077
paints (5077) 5077
polishes (5077) 5077
casting (4901) 4901
powder metallurgy (4901) 4901
cables (4655) 4655
conductors (4655) 4655
insulators (4655) 4655
selection of materials for their conductive, insulating ordielectric properties (4655) 4655
optical elements, systems, or apparatus (4463) 4463
indexing scheme relating to structural and physical aspects ofsolid inorganic compounds (4366) 4366
alloys (4303) 4303
organic chemistry (4129) 4129
investigating or analysing materials by determining theirchemical or physical properties (4121) 4121
devices or arrangements, the optical operation of which ismodified by changing the optical properties of the medium of thedevices or arrangements for the control of the intensity,colour, phase, polarisation or direction of light, e.g.switching, gating, modulating or demodulating (4095) 4095
frequency-changing (4095) 4095
non-linear optics (4095) 4095
optical analogue/digital converters (4095) 4095
optical logic elements (4095) 4095
techniques or procedures for the operation thereof (4095) 4095
materials for miscellaneous applications, not provided forelsewhere (4032) 4032
electric techniques not otherwise provided for (3787) 3787
manufacture, shaping, or supplementary processes (3784) 3784
machine tools (3645) 3645
metal-working not otherwise provided for (3645) 3645
electric discharge tubes or discharge lamps (3319) 3319
human necessities (2966) 2966
inductances (2934) 2934
magnets (2934) 2934
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English (185345) 185345
French (31432) 31432
Chinese (30143) 30143
German (26544) 26544
Japanese (10355) 10355
Korean (8885) 8885
Russian (2885) 2885
Spanish (913) 913
Italian (603) 603
Dutch (530) 530
Ukrainian (470) 470
Swedish (438) 438
Portuguese (379) 379
Danish (359) 359
Polish (278) 278
Finnish (275) 275
Norwegian (261) 261
Romanian (201) 201
Czech (101) 101
Hebrew (38) 38
Hungarian (27) 27
Bulgarian (21) 21
Slovak (21) 21
Moldavian (18) 18
Slovenian (18) 18
Turkish (13) 13
Greek (9) 9
Indonesian (9) 9
Estonian (8) 8
Icelandic (8) 8
Latvian (8) 8
Lithuanian (6) 6
Arabic (5) 5
Croatian (5) 5
Serbian (5) 5
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