Espacenet
Espace
net
Patent search
Deutsch
English
Français
Contact
Change country
Albania
Arabpat
Austria
Belgium
Bulgaria
China
Croatia
Cyprus
Czech Republic
Denmark
Estonia
Finland
Greece
Hungary
Iceland
Ireland
Italy
Japan
Korea
Latipat
Latvia
Lithuania
Luxembourg
Netherlands
North Macedonia
Norway
Poland
Portugal
Republic of Moldova
Romania
San Marino
Serbia
Slovakia
Slovenia
Spain
Sweden
Turkey
About Espacenet
Other EPO online services
Searching for patents
Open Patent Services
European Patent Register
European Publication Server
Global Patent Index
Search
Result list
My patents list (
)
Query history
Settings
Help
Smart search
Advanced search
Classification search
Quick help
What is the Cooperative Patent Classification system?
How do I enter classification symbols?
What do the different buttons mean?
Can I retrieve a classification using keywords?
Can I start a new search using the classifications listed?
Where can I view the description of a particular CPC class?
What is the meaning of the stars in front of the classifications found?
What does the text in brackets mean?
Cooperative Patent Classification
Sitemap
Accessibility
Legal notice
Terms of use
Last updated: 26.08.2019
6.3.12.00.5; 35p