FI and F-terms Patent Classification

Japanese Patent Classification

FI [File Index] and F-term [File forming term] are Japanese patent classification systems, consisting of approx. 190,000 and 360,000 entries, respectively, which enable efficient searches for patent documents.

The FI codes are based on the IPC [International Patent Classification].

Here you can find more information on classifications such as IPC, CPC, US classes and ECLA.


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