Technologies durables

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Brochure "Searching sustainable technologies" (anglais) (PDF, 2.1 MB)

Access to patents for climate change mitigation technologies

The EPO has established a new classification scheme for technical attributes of technologies that can be loosely referred to as climate change mitigation. This makes it easier to retrieve patent document that cover these technologies.

To ensure their relevance, the categories were defined with the help of experts in the field, both from within the EPO and with the help of external partners, including the Intergovernmental Panel on Climate Change (IPCC).

See the list of all external partners

The so-called Y02 subclasses include areas related to specific clean energy technologies, namely Y02C (greenhouse gases- capture and storage/sequestration or disposal) and Y02E (greenhouse gases - emissions reduction technologies related to energy generation, transmission or distribution).

Find out more in our e-learning module

Other climate change mitigation areas include Y02B, namely relating to Buildings, including the residential sector, Y02T relating to the Transportation of goods and persons, and Y04S for "Smart Grids" technologies, such as remote network operation, smart metering, electric and hybrid vehicles interoperability, and energy trading and marketing.

Updates on Y02 and Y04S

See more details on searching sustainable technologies

Start searching for sustainable technologies on Espacenet

This is what the breakdown for a specific energy type looks like (example solar energy):

Code Y02E
Description
Comment
10/00
Energy generation through renewable energy sources
Geothermal, hydro, oceanic, solar (PV and thermal), wind
20/00
Combustion technologies with mitigation potential
CHP, CCPP, IGCC, synair, cold flame, etc.
30/00
Energy generation of nuclear origin
Fusion and fission
40/00
Technologies for efficient electrical power generation, transmission or distribution
Reactive power compensation, efficient operation of power networks, etc.
50/00
Technologies for the production of fuel of non-fossil origin
Biofuels, from waste
60/00
Technologies with potential or indirect contribution to GHG emissions mitigation
Energy storage (batteries, ultracapacitors, flywheels...), hydrogen technology, fuel cells, etc.
70/00
Other energy conversion or management systems reducing GHG emissions
Synergies among renewable energies, fuel cells and energy storage


Taking solar energy as an example, this is what a specific energy type looks like in the new scheme:

Code Y02EDescription
10/40
Solar thermal energy
10/41
Tower concentrators
10/42
Dish collectors
10/43
Fresnel lenses
10/44
Heat exchange systems
10/45
Trough concentrators
10/46
Solar-thermal plants for electricity generation, e.g. Rankine, Stirling solar-thermal generators
10/47
Mountings or tracking
10/48
Mechanical power, e.g. thermal updraft
10/50
Photovoltaic (PV) energy
10/52
PV systems with concentrators
10/54
Material technologies
10/54B
CuInSe2 material PV cells
10/54D
Dye sensitized solar cells
10/54F
Solar cells from Group II-VI materials
10/54H
Solar cells from Group III-V materials
10/54J
Microcrystalline silicon PV cells
10/54L
Polycrystalline silicon PV cells
10/54N
Amorphous silicon PV cells
10/56
Power conversion electrical/electronic aspects
10/56B
for grid-connected applications
10/56D
concerning power management inside the plant, e.g. battery charging/discharging,economical operation, hybridisation with other energy sources
10/58
M.P.P.T. systems (maximum power point tracking)
10/60
TPV hybrids

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