Derived from the 6th edition of the IPC, FI classifications (File Index) are used by the Japan Patent Office examiners to classify Japanese documents.
FI codes can be
searched in the format:
IPC code: G10L9/20
Code IPC with symbol file:
G10L9 / 20A
Code IPC with subdivision: G10L9/20301
Code IPC with
subdivision and symbol file: G10L9 / 20301B
Code IPC with facet:
G10L9/14ZNM
All technical areas covered by the FI classifications are defined in themes and some of these themes are divided into F-Terms.
F-Terms may be
searched in the format:
Theme: 4C206
Theme and point of view: 4C206CB
+.
F full Term: 4C206CB23