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Year199020002005201020112012201320142015
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Technology domain
All technologies (total patents)114 203.03223 462.99267 211.76263 944.12273 739.86281 112.11294 312.52288 464.12286 018.68
Selected environment-related technologies7 487.614 111.6719 168.7530 066.3531 498.2231 010.3129 948.2528 092.8724 753.92
Hide subtree Environmental management4 904.88 804.7511 228.4712 256.6512 198.5212 331.0212 765.4512 128.6711 653.38
Environmental managementHide subtree Air pollution abatement2 573.585 270.836 950.57 265.457 185.137 271.777 712.987 481.387 313.5
Air pollution abatementEmissions abatement from stationary sources (e.g. SOx, NOx, PM emissions from combustion plants)439.42478705.151 070.621 054.421 016.87933.88765.17721.67
Emissions abatement from mobile sources (e.g. NOx, CO, HC, PM emissions from motor vehicles)1 5833 3603 9313 840.343 742.654 037.674 279.514 166.334 043.47
Not elsewhere classified551.171 432.832 314.352 354.52 388.072 217.232 499.582 549.882 548.37
Hide subtree Water pollution abatement1 155.331 767.52 225.472 652.882 721.452 706.232 743.652 529.982 412.88
Water pollution abatementWater and wastewater treatment1 092.331 704.52 149.972 489.382 596.952 590.232 644.652 428.152 342.88
Fertilizers from wastewater62126.518273023.524.3326.5
Oil spill cleanup574249145.597.58675.577.543.5
Hide subtree Waste management1 033.881 526.421 637.331 887.151 873.771 929.771 836.071 610.631 454.75
Waste managementSolid waste collection145.5170.5238.33252.5208.25190195174.5230
Material recovery, recycling and re-use404.22665.58703.92769.9767.83858.6781.9735.63626.33
Fertilizers from waste571199592.17123.5120.510394.3399
Incineration and energy recovery156.67206.83197288.5267.1302.5307.67241191.33
Waste management – Not elsewhere classified270.5364.5403.08484.08507.08458.17448.5365.17308.08
Soil remediation10111310598.59996.25106.25100.583
Environmental monitoring41127310.17352.67319.17327366.5406.17389.25
Hide subtree Water-related adaptation technologies264492.67842.421 151.331 276.51 365.171 518.581 295.921 311.83
Water-related adaptation technologiesHide subtree Demand-side technologies (water conservation)253441.67700.92974.331 094.831 2471 410.421 206.421 210.33
Demand-side technologies (water conservation)Indoor water conservation2948109.5135142.17142156.5151.5171
Irrigation water conservation33108.17132.08125.5159.83153.5194126.83149.67
Water conservation in thermoelectric power production61169.5272.17498.83592.33684.5808.25692.58656.5
Water distribution130116187.17215200.5267251.67235.5233.17
Hide subtree Supply-side technologies (water availability)1151141.5177181.67118.17108.1789.5101.5
Supply-side technologies (water availability)Water collection (rain, surface and ground-water)1140106.5151.5133.6796.1792.1768.6789.5
Water storage0113525.548221620.8312
Hide subtree Climate change mitigation4 330.529 083.4212 894.4823 744.8825 029.8624 409.0623 011.821 230.7317 846.46
Climate change mitigationHide subtree Climate change mitigation technologies related to energy generation, transmission or distribution1 008.52 303.54 548.4313 075.3113 232.3511 894.79 956.918 565.226 770.76
Climate change mitigation technologies related to energy generation, transmission or distributionHide subtree Renewable energy generation294.5927.51 792.087 252.37 085.115 808.064 799.163 987.023 321.47
Renewable energy generationWind energy27180352.331 636.41 608.421 338.581 074940.83848.67
Solar thermal energy56146.52601 075.75947.5771.67592.42449.17369.33
Solar photovoltaic (PV) energy167513.83955.083 875.173 819.613 129.472 640.742 103.021 727.97
Solar thermal-PV hybrids11219.572.9266.1741.52945.3330.5
Geothermal energy653295.577.2584.55559.6741.5
Marine energy627.571.5206.13232.67162164153116.5
Hydro energy31.542.67101.67290.43333.5280.33244236187
Hide subtree Energy generation from fuels of non-fossil origin74194.83465.771 274.791 249.41 169.921 052.33787.6584.33
Energy generation from fuels of non-fossil originBiofuels30113.83273.77850.54816.47738.33663.17473.93356.08
Fuel from waste4481192424.25432.93431.58389.17313.67228.25
Hide subtree Nuclear energy215105.5121289254.67327.5260.33267204
Nuclear energyNuclear fusion reactors3212.5335225.534.534.334839
Nuclear fission reactors1839388237229.17293226219165
Hide subtree Combustion technologies with mitigation potential (e.g. using fossil fuels, biomass, waste, etc.)109231261.83584.73524.5630.38516.08417.25290.5
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.)58129.33170327.57292.17406.22335.58281.75211.67
Technologies for improved input efficiency (Efficient combustion or heat usage)51101.6791.83257.17232.33224.17180.5135.578.83
Hide subtree Technologies for an efficient electrical power generation, transmission or distribution11682.5120.75246436.67259.86214.75207.5223.5
Technologies for an efficient electrical power generation, transmission or distributionSuperconducting electric elements or equipment9942.570.7564.17243.6769.0347.2562.551
Not elsewhere classified174050181.83193190.83167.5145172.5
Hide subtree Enabling technologies in the energy sector191749.171 740.53 302.433 535.53 512.322 984.752 774.12 050.45
Enabling technologies in the energy sectorHide subtree Energy storage105389.67724.51 832.182 040.342 089.91 708.921 768.851 247.62
Energy storageBatteries18116274.51 004.981 152.081 172.5926.671 002.67686.85
Capacitors42176.5300.33511.27510.09551.07449.58390.02238.77
Thermal storage3870122.67193223224.83219.17253.17236
Pressurised fluid storage24938.276647374433
Mechanical storage517.5732.53345243333
Pumped storage05.671152.1756.1749.552.54620
Hydrogen technology39199422508.83449.25473.83507.5420.42355
Fuel cells36121.5548680.88694.42633505.33388.17257.33
Smart grids in the energy sector113946280.53351.5315.58263196.67190.5
Other energy conversion or management systems reducing greenhouse gas emissions91346.5126.05146.5186.67129.5124.7596.5
Hide subtree Climate change mitigation technologies related to wastewater treatment or waste management 770.31 094.081 173.921 259.61 354.351 313.981 227.131 154.171 018.17
Climate change mitigation technologies related to wastewater treatment or waste management Wastewater treatment202289.83343.83449.87515.1475.57454.47375.17309.5
Hide subtree Solid waste management545.5752.25781.75750.23776.5778.42725.67716.5643.67
Solid waste managementWaste collection, transportation, transfer or storage61091168563
Waste processing or separation226816.5161020.510
Landfill technologies aiming to mitigate methane emissions81139810775
Bio-organic fraction processing; production of fertilisers from the organic fraction of waste or refuse6385.569.575.1782.591737475
Hide subtree Reuse, recycling or recovery technologies466.5643.75694.25647.07663.5653.42630.67609550.67
Reuse, recycling or recovery technologiesDismantling or mechanical processing of waste for the recovery of materials during separation, disassembly, pre-processing or upgrading3756.544422524.6726.52417
Metal recycling10121531.331619.5161611
Disassembly of vehicles for recovery of salvageable parts131014200
Construction or demolition [C&D] waste9836.52215.54
Glass recycling8822.514.5711865
Plastics recycling81146.5143.3385120.75106.51028274
Paper recycling69.5324339.543.53543.752934
Disintegrating fibre-containing textile articles to obtain fibres for re-use0002191131
Rubber waste recycling1013.5138115.55.5102
Recovery of polymers other than plastics or rubbers5110789.8363.6772.676559.338471.33
Recovery of luminescent materials4700.557.17110
Recovery of fats, fatty oils, fatty acids or other fatty substances, e.g. lanolin or waxes313152529.527.75212124
Recovery of tanning agents from leather01000000.50
Recycling of wood or furniture waste (production of fertilisers from the organic fraction of waste or refuse)040.53.544252
Packaging reuse or recycling (bio-packaging)42574526.3344.3336.3340.8346.537.67
Recycling of waste of electrical or electronic equipment925301431.527.518.52625
Recycling of batteries118.594044.53134.541.537.17
Recycling of fuel cells015024312
Nuclear fuel reprocessing256912.6774310
Reuse, recycling or recovery technologies cross-cutting to different types of waste119135.75209.08236.23190.08226.5230.75204193.5
Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas (GHG) emissions mitigation22.85248.3359.562.75604762.565
Hide subtree Capture, storage, sequestration or disposal of greenhouse gases74.25198.5256.1518.52554.47528.2490.5442.83375.17
Capture, storage, sequestration or disposal of greenhouse gasesCO2 capture or storage (CCS)51.58102.5173.83413.75471.8440.57378.5326301
Capture or disposal of greenhouse gases other than CO222.679682.27104.7782.6787.63112116.8374.17
Hide subtree Climate change mitigation technologies related to transportation1 146.53 2154 980.688 930.89 678.4710 004.0710 361.889 182.587 259.83
Climate change mitigation technologies related to transportationHide subtree Road transport957.52 596.173 881.356 523.876 970.636 944.677 356.176 513.085 066.75
Road transportConventional vehicles (based on internal combustion engine)775.51 651.332 069.682 526.622 472.832 571.333 002.922 831.52 585.75
Hybrid vehicles26330614826.5803.5901944.5802.5588.5
Electric vehicles110458.51 001.332 741.583 130.633 008.582 972.332 482.751 496.83
Fuel efficiency-improving vehicle design (common to all road vehicles)46156.33196.33429.17563.67463.75436.42396.33395.67
Rail transport15.525256753.55954.54553.5
Maritime or waterways transport133658.33114.6795134112114121.75
Air transport133.5322.5639.51 051.61 097.671 457.571 479.221 3341 297.67
Hide subtree Enabling technologies in transport27235.33376.51 173.671 461.671 408.831 3601 176.5720.17
Enabling technologies in transportElectric vehicle charging2464.5111.5977.331 266.171 105.831 061.5800.33472.17
Application of fuel cell and hydrogen technology to transportation3170.83265196.33195.5303298.5376.17248
Hide subtree Climate change mitigation technologies related to buildings4141 050.921 754.473 444.33 524.253 386.392 957.232 750.752 168.5
Climate change mitigation technologies related to buildingsIntegration of renewable energy sources in buildings39132225.33856.4832.83615.92498.17424.17326.67
Hide subtree Energy efficiency in buildings323775.921 258.372 202.072 234.082 337.142 135.562 017.081 626.33
Energy efficiency in buildingsLighting84204.67459.2734.18722.83680.85569.5512.83476.33
Heating, ventilation or air conditioning [HVAC]128200342510.67483.5504507.83486.75369.67
Home appliances2464.5139.67183218.5244204.5169.33110.83
Information and communication technologies01.501.672.6714.935104
Elevators, escalators and moving walkways157127810.53.672.5
End-user side86300.25310.5760.55799.58885.36838.22834.5663
Architectural or constructional elements improving the thermal performance of buildings16404071109.251056568.540.5
Enabling technologies in buildings36103230.77314.83348.08328.33258.5241175
Hide subtree Climate change mitigation technologies in the production or processing of goods1 521.83 049.083 566.875 757.325 926.695 666.335 444.425 120.14 214.45
Climate change mitigation technologies in the production or processing of goodsHide subtree Technologies related to metal processing274.17410.5386.13521.42609.17636.33743.3890.75860.25
Technologies related to metal processingReduction of greenhouse gas (GHG) emissions2362.529.6742.578.334857.551.519
Hide subtree Process efficiency251.17348356.47478.92530.83588.33685.8839.25841.25
Process efficiencyby recovering materials204.67283252.8323.92320.83360.67316.8335.58281.33
by increasing the energy efficiency of the process45.565101.67149204224.67360501.67558.92
characterised by the energy source102663921
Hide subtree Technologies relating to chemical industry678.631 203.921 128.581 520.341 608.741 576.451 382.931 197.4992.37
Technologies relating to chemical industryGeneral improvement of production processes causing greenhouse gases (GHG) emissions189.83355.67450.35730.52754.35722.08705.83557.92471.5
Improvements relating to chlorine production100131231
Improvements relating to adipic acid or caprolactam production0001.8300211
Improvements relating to chlorodifluoromethane (HCFC-22) production000000000
Improvements relating to the production of products other than chlorine, adipic acid, caprolactam, or chlorodifluoromethane, e.g. bulk or fine chemicals or pharmaceuticals487.8848.25678.23786.99851.39853.36673.1635.48518.87
Hide subtree Technologies relating to oil refining and petrochemical industry1650204.17454.15462.77396.67328.92261142.33
Technologies relating to oil refining and petrochemical industryReduction of greenhouse gas (GHG) emissions during production processes00322.751614979
Bio-feedstock915.5126.83333.98326.55275.17223.67141100.83
Carbon capture or storage (CCS) specific to hydrogen production1419.333734.52522347
Ethylene production630.55560.4285.7282.574.257925.5
Hide subtree Technologies relating to the processing of minerals109172.67221.17258.23266.25337.83325.32337.77289.83
Technologies relating to the processing of mineralsProduction of cement302737.1760.1761.757792.3366.468
Cement grinding40410.594.5141
Manufacturing or processing of sand or stone210012004
Production or processing of lime3368.912151715.6710
Glass production55125.67147.5158.33170.5212.83193.82240.7190.33
Production of ceramic materials or ceramic elements151626.520.331226.521.171116.5
Hide subtree Technologies relating to agriculture, livestock or agroalimentary industries3977121.67237.17273.42290.9308.28331304.67
Technologies relating to agriculture, livestock or agroalimentary industriesAgricultural machinery or equipment913.52070.171008095.587.8387.33
Reduction of greenhouse gas (GHG) emissions in agriculture19224289.596.42138130.3169.17163.33
Land use policy measures010110000
Afforestation or reforestation12.50001.5020
Livestock or poultry management0056810621
Fishing02313852169
Apiculture000010001
Food processing103651.6757.55956.474.485443
Climate change mitigation technologies in the production process for final industrial or consumer products153750.51 035.322 099.622 089.731 693.15877.38....
Climate change mitigation technologies for sector-wide applications1772.1795.33243.07215.75232.5208.5157.67143.67
Enabling technologies with a potential contribution to greenhouse gas (GHG) emissions mitigation242474455.17471.67504.67475.08555.83592.93569.67
Data extracted on 19 Feb 2019 21:30 UTC (GMT) from OECD.Stat

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