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chemistry (8803) 8803
chemical surface treatment (8720) 8720
coating by vacuum evaporation, by sputtering, by ion implantationor by chemical vapour deposition, in general (8720) 8720
coating material with metallic material (8720) 8720
coating metallic material (8720) 8720
diffusion treatment of metallic material (8720) 8720
inhibiting corrosion of metallic material or incrustation ingeneral (8720) 8720
metallurgy (8720) 8720
multi-step processes for surface treatment of metallicmaterial involving at least one process provided for in classc23 and at least oneprocess covered by subclass c21d or c22f or class c25 (8720) 8720
non-mechanical removal of metallic material from surface (8720) 8720
electricity (3625) 3625
basic electric elements (3387) 3387
electric solid state devices not otherwise provided for (3088) 3088
semiconductor devices (3088) 3088
compositions based thereon (1901) 1901
organic macromolecular compounds (1901) 1901
their preparation or chemical working-up (1901) 1901
coating by vacuum evaporation, by sputtering, by ionimplantation or by chemical vapour deposition, in general (1759) 1759
surface treatment of metallic material by diffusion into thesurface, by chemical conversion or substitution (1759) 1759
performing operations (1719) 1719
transporting (1719) 1719
macromolecular compounds obtained by reactions only involvingcarbon-to-carbon unsaturated bonds (1564) 1564
adhesives (1382) 1382
dyes (1382) 1382
miscellaneous applications of materials (1382) 1382
miscellaneous compositions (1382) 1382
natural resins (1382) 1382
paints (1382) 1382
polishes (1382) 1382
organic chemistry (1055) 1055
electric techniques not otherwise provided for (954) 954
treatment of water, waste water, sewage, or sludge (941) 941
electric discharge tubes or discharge lamps (832) 832
materials for miscellaneous applications, not provided forelsewhere (812) 812
general tagging of cross-sectional technologies spanning over several sections of the ipc (792) 792
general tagging of new technological developments (792) 792
technical subjects covered by former uspc cross-reference art collections [xracs] and digests (792) 792
physics (711) 711
physical or chemical processes or apparatus in general (680) 680
plasma technique (658) 658
production of accelerated electrically-charged particles or ofneutrons (658) 658
production or acceleration of neutral molecular or atomicbeams (658) 658
apparatus therefor (574) 574
fuels (560) 560
lubricants (557) 557
peat (557) 557
petroleum, gas or coke industries (557) 557
technical gases containing carbon monoxide (557) 557
chemical paint or ink removers (550) 550
coating compositions, e.g. paints, varnishes orlacquers (550) 550
correcting fluids (550) 550
filling pastes (550) 550
inks (550) 550
pastes or solids for colouring or printing (550) 550
use of materials therefor (550) 550
woodstains (550) 550
technical subjects covered by former uspc (528) 528
chemical or physical processes, e.g. catalysis or colloidchemistry (439) 439
their relevant apparatus (439) 439
heterocyclic compounds (414) 414
acyclic, carbocyclic or heterocyclic compounds containingelements other than carbon, hydrogen, halogen, oxygen, nitrogen,sulfur, selenium or tellurium (399) 399
lubricating compositions (384) 384
use of chemical substances either alone or as lubricatingingredients in a lubricating composition (384) 384
macromolecular compounds obtained otherwise than by reactionsonly involving unsaturated carbon-to-carbon bonds (377) 377
mechanical engineering (347) 347
heating (344) 344
technical subjects covered by former uspc cross-reference artcollections [xracs] and digests (343) 343
electrolytic or electrophoretic processes (342) 342
acyclic or carbocyclic compounds (341) 341
blasting (341) 341
lighting (341) 341
weapons (341) 341
cinematography (340) 340
electrography (340) 340
holography (340) 340
photography (340) 340
apparatus specially adapted therefor (311) 311
materials therefor (310) 310
originals therefor (310) 310
photomechanical production of textured or patterned surfaces,e.g. for printing, for processing of semiconductordevices (310) 310
cleaning or degreasing of metallic material by chemicalmethods other than electrolysis (308) 308
casings or constructional details of electric apparatus (291) 291
manufacture of assemblages of electrical components (291) 291
printed circuits (291) 291
technologies or applications for mitigation or adaptation againstclimate change (281) 281
inorganic chemistry (275) 275
human necessities (272) 272
compositions of macromolecular compounds (269) 269
fixed constructions (246) 246
climate change mitigation technologies in the production orprocessing of goods (234) 234
animal and vegetable oils, fats, fatty substances and waxes (218) 218
candles (218) 218
detergents (218) 218
fatty acids therefrom (218) 218
electroforming (210) 210
processes for the electrolytic or electrophoretic productionof coatings (210) 210
technical subjects covered by former us classification (208) 208
ceramics (207) 207
artificial stone (205) 205
cements (205) 205
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English (8150) 8150
Chinese (1196) 1196
French (1147) 1147
German (759) 759
Korean (235) 235
Japanese (143) 143
Russian (102) 102
Spanish (92) 92
Norwegian (91) 91
Portuguese (43) 43
Swedish (29) 29
Danish (25) 25
Finnish (24) 24
Dutch (19) 19
Polish (13) 13
Italian (10) 10
Czech (9) 9
Hungarian (8) 8
Ukrainian (4) 4
Romanian (3) 3
Turkish (3) 3
Bulgarian (2) 2
Indonesian (2) 2
Serbian (2) 2
Arabic (1) 1
Croatian (1) 1
Hebrew (1) 1
Slovak (1) 1
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