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Technology domain
All technologies (total patents)25 50335 30688 76334 94535 00233 34532 75733 13434 18934 73436 04238 04836 43336 65239 87140 85340 225
Hide subtree Environment-related technologies1 6532 5015 2812 4592 5392 9473 1493 5084 0923 8673 8053 6433 2553 2113 3753 5683 258
Environment-related technologiesHide subtree Environmental management1 1401 6683 0291 5361 6851 6751 7781 9452 2881 9961 8151 9481 7541 4291 5241 8281 658
Environmental managementHide subtree Air pollution abatement4035981 158558677615680764928733694705638428474557468
Air pollution abatementEmissions abatement from stationary sources (e.g. SOx, NOx, PM emissions from combustion plants)128207328165209222295353399341296313264161169191194
Emissions abatement from mobile sources (e.g. NOx, CO, HC, PM emissions from motor vehicles)173214449207221189160209275221210202178127144179120
Air pollution abatement - Not elsewhere classified102177381186247204225202254171188190196140161187154
Hide subtree Water pollution abatement3994951 022559526570599637763683600655608505538624618
Water pollution abatementWater and wastewater treatment357467981544513559583625740656576636582497524608603
Fertilizers from wastewater4510711485886271566
Oil spill and pollutant clean-up38233182787151918171979109
Hide subtree Waste management316532758400449463460492551538479554453460469584543
Waste managementSolid waste collection3868767254425959544356334456604553
Material recovery, recycling and re-use122233329143182184190221216225213254192186225276209
Fertilizers from waste2957965266475544646361565682709292
Incineration and energy recovery41691083738704650616535746137283873
Waste management – Not elsewhere classified86105149961091201101181561421141371009986133116
Soil remediation2041801025202545262736212217232913
Environmental monitoring221198714720156133319203416
Hide subtree Climate change mitigation9861 6143 6111 6131 6962 1402 3382 6793 1523 0293 0222 8142 4322 4952 5832 7312 443
Climate change mitigationHide subtree Climate change mitigation in information and communication technologies (ICT)327924912986117126131152175166308171189257260143
Climate change mitigation in information and communication technologies (ICT)Energy efficient computing51938158221816264840915438715134
Energy efficiency in communication networks27602111147895108115126127126217117151186209109
Hide subtree Climate change mitigation technologies related to energy generation, transmission or distribution3305861 7908478971 4061 5951 9962 3432 0312 0071 7881 5941 6251 5551 8661 689
Climate change mitigation technologies related to energy generation, transmission or distributionHide subtree Renewable energy generation972115103493976777431 0041 155929884726609683682662684
Renewable energy generationWind energy1230130919716018421628718417316714411585127141
Solar thermal energy32657454851331512192652411981331121131149098
Solar photovoltaic (PV) energy4263194128135208238369404341302254234328345280360
Solar thermal-PV hybrids..710578712131010121131141615
Geothermal energy151342107201819191459595
Marine energy, e.g. using wave energy or salinity gradient3204038459380105987499756354678839
Hydro energy721492926657663706083714033525226
Hide subtree Energy generation from fuels of non-fossil origin315613298167274291376431409334400277248192262213
Energy generation from fuels of non-fossil originBiofuels, e.g. bio-diesel15308162120172202258287293242253174167130160104
Fuel from waste, e.g. synthetic alcohol or diesel162651364710289118144116921471038162102109
Hide subtree Nuclear energy3831748912712314418195763319849
Nuclear energyNuclear fusion reactors341927689411243015124449258844
Nuclear fission reactors41247213317143713146105
Hide subtree Combustion technologies with mitigation potential (e.g. using fossil fuels, biomass, waste, etc.)255910844527211213217215812518912368516690
Combustion technologies with mitigation potential (e.g. using fossil fuels, biomass, waste, etc.)Technologies for improved output efficiency (combined heat and power, combined cycles, etc.)182964262254546910674631078643293751
Technologies for improved input efficiency (efficient combustion or heat usage)730441830185863668462823725222939
Hide subtree Technologies for an efficient electrical power generation, transmission or distribution10155915161831324932216327054695050
Technologies for an efficient electrical power generation, transmission or distributionSuperconducting electric elements or equipment753547675141793227331
Smart grids as climate change mitigation technology in the energy generation sector....3..58118211010122617372716
Not elsewhere classified3102111441319271827172230292033
Hide subtree Enabling technologies (technologies with potential or indirect contribution to GHG emission mitigation)129211900321254344405406467441415392443492477705577
Enabling technologies (technologies with potential or indirect contribution to GHG emission mitigation)Hide subtree Energy storage8513847812199149173181222226224221220267288358342
Energy storageBatteries74118389846592129123152162129135156212224272256
Capacitors..4286812191814143320913141820
Mechanical energy storage, e.g. flywheels or pressurised fluids122394191116271727363011234242
Thermal energy storage1014382222261424293335302531272624
Hydrogen technology1412847147678613012510386868212182146131
High-voltage direct current transmission2112..11..257432272
Fuel cells2860337127108127145951181079881138102105194102
Other energy conversion or management systems reducing GHG emissions..371229634381815301517532326
Hide subtree Climate change mitigation technologies related to wastewater treatment or waste management191352490228258268259304358329309356271289274359338
Climate change mitigation technologies related to wastewater treatment or waste managementWastewater treatment48901539781991111401601351271511068891114113
Hide subtree Solid waste management138245315121166154133142183166162186150180167216189
Solid waste managementWaste collection, transportation, transfer or storage12252223..12..1..222
Waste processing or separation....21..172..1151..2311
Landfill technologies aiming to mitigate methane emissions653..21..1126111144
Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse1133562416112023212821141641133422
Hide subtree Reuse, recycling or recovery technologies12020525291146123109115160134128170132136148175160
Reuse, recycling or recovery technologiesMechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly916283157851582339797
Waste management of vehicles..................................
Construction or demolition [C&D] waste1..41....212........2431
Glass recycling1323131..12..1111....
Plastics and rubber recycling2258832643291816332734331525153723
Paper recycling15311225555812142016691724
Disintegrating fibre-containing textile articles to obtain fibres for re-use..21......2....................
Recovery of fats, fatty oils, fatty acids or other fatty substances, e.g. lanolin or waxes337744661132822561
Recycling of wood or furniture waste..122........2................
Packaging reuse or recycling, e.g. of multilayer packaging21292881815817951323159251319
Recycling of waste of electrical or electronic equipment (WEEE)53312......5..211211..
Recycling of batteries or fuel cells15521..42..112543839
Use of waste materials as fillers for mortars or concrete4254773657605563846649767577738676
Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation517221011151522152820191521162936
Hide subtree Capture, storage, sequestration or disposal of greenhouse gases1120964273122156238247195185177117971259793
Capture, storage, sequestration or disposal of greenhouse gasesCapture or disposal of nitrous oxide (N2O)1512664411854593286
Capture or disposal of methane (CH4)1..9411142132017816115141210
Capture or disposal of perfluorocarbons (PFC), hydrofluorocarbons (HFC) or sulfur hexafluoride (SF6)1..20....2..5....1221....1
Capture or disposal of carbon dioxide (CO2)81555325610215020921917317215495881097776
Hide subtree Climate change mitigation technologies related to transportation175266539303277309362418468492496410417320396488465
Climate change mitigation technologies related to transportationHide subtree Road transport143208366214212214214263307327294216290172219268244
Road transportConventional vehicles (based on internal combustion engine)112152240981261098092129132947615255698952
Hybrid vehicles410234025362430304932193312202910
Electric vehicles2036785857611011291311301381008294111140160
Fuel efficiency-improving vehicle design (common to all road vehicles)710251848912171630212311191022
Rail transport49121045831716812101519148
Maritime or waterways transport91455151112156152033222116192717
Aeronautics or air transport14206529254756655864701104855659475
Hide subtree Enabling technologies in transport5154135253169817165915048627485121
Enabling technologies in transportElectric vehicle charging5132322131755666146864142476471105
Application of hydrogen technology to transportation, e.g. using fuel cells..2181312141415101959615101416
Hide subtree Climate change mitigation technologies related to buildings98165393190208259288355456406431402431393525339323
Climate change mitigation technologies related to buildingsIntegration of renewable energy sources in buildings1626584749107106160149117129828311811981125
Hide subtree Energy efficiency in buildings73111279123125129144168262212225259252213337193159
Energy efficiency in buildingsEnergy efficient lighting916684327254334463534656752833624
Energy efficient heating, ventilation or air conditioning [HVAC]35538551515751569777727167641116853
Energy efficiency in home appliances1516341430221015322737222818193818
Energy efficient elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies........22..131221131..
End-user side14269215152340628472809989781215064
Architectural or constructional elements improving the thermal performance of buildings41215..15..334898189105
Enabling technologies in buildings516412019233524416968539554605534
Hide subtree Climate change mitigation technologies in the production or processing of goods3194941 0305355446927838181 159951781863833754729782797
Climate change mitigation technologies in the production or processing of goodsHide subtree Technologies related to metal processing121193269141127149164136177177160160199163183190136
Technologies related to metal processingReduction of greenhouse gas (GHG) emissions174147261217172733262122605676
Process efficiency104152222115115132147109144151139138139158177183130
Hide subtree Technologies relating to chemical industry56102226110139174210228353274215265209197120191172
Technologies relating to chemical industryProcess efficiency in chemical industry25291176170789085168130991271221025088103
Feedstock2251793638565448757755824948397544
Reduction of greenhouse gas [GHG] emissions, e.g. CO234221224305683915651513128282124
Improvements relating to chlorine production1..3......1........1..........
Improvements relating to adipic acid or caprolactam production....1........1..................
Improvements relating to fluorochloro hydrocarbon, e.g. chlorodifluoromethane [HCFC-22] production..................................
Improvements relating to the production of bulk chemicals518417109111911104719371
Hide subtree Technologies relating to oil refining and petrochemical industry10133562891301321121591311081359360474648
Technologies relating to oil refining and petrochemical industryBio-feedstock8621387192103931361131001006252394231
Ethylene production2714241838291923188353188417
Hide subtree Technologies relating to the processing of minerals3036682823293672573031383425393040
Technologies relating to the processing of mineralsProduction of cement97221012162364471321202313242931
Production or processing of lime..87152..126..10513..3
Glass production131934155793545218913
Production of ceramic materials or ceramic elements825214443756533..3
Hide subtree Technologies relating to agriculture, livestock or agroalimentary industries27316329264243577071677183100107130214
Technologies relating to agriculture, livestock or agroalimentary industriesUsing renewable energies, e.g. solar water pumping553113..7452239424
Measures for saving energy, e.g. in green houses5..3..3152621237812719
Reduction of greenhouse gas [GHG] emissions in agriculture1115261382025212538273240566561146
Land use policy measures................1........1..2..
Afforestation or reforestation..211..12..1........11....
Livestock or poultry management........21..1..................
Fishing; Aquaculture; Aquafarming1..411..11944213647
Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking59261311161025242222323222195438
Technologies in the production process for final industrial or consumer products477920912798107145122185159103120133124798190
Climate change mitigation technologies for sector-wide applications410202012222025494439392619454428
Enabling technologies with a potential contribution to GHG emissions mitigation2430140183039336610965583556661097069
Hide subtree Climate change adaptation technologies6121 1823 2372 1032 2842 0162 6832 6432 8432 0422 2182 4272 2291 9432 7882 7302 602
Climate change adaptation technologiesHide subtree Adaptation at coastal zones or river basin58145649616741052101610
Adaptation at coastal zones or river basinHard structures, e.g. dams, dykes or breakwaters3672218234..221344
Dune restoration or creation; cliff stabilisation........1....2....1......1....
Artificial reefs or seaweed; restoration or protection of coral reefs..1....1......1011211212
Flood prevention; flood or storm water management217221113215....134
Controlling, monitoring or forecasting......1..2..1....112..38..
Hide subtree Water resource management76139218204257282367355398306260217269164222241244
Water resource managementHide subtree Demand-side technologies (water conservation)172252402342384406480399465393360333351294309347360
Demand-side technologies (water conservation)Indoor water conservation836212233372629323029224118353845
Irrigation water conservation1822644754401181061317090746951776692
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Data extracted on 17 Oct 2021 15:14 UTC (GMT) from OECD.Stat

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