What does ipc main classification number mean?

Ipc main classification number refers to the international patent classification, that is, the international patent literature classification.

Ipc main classification number is used to classify patent documents, and it is a key field of patents, which is easy to find and manage. Ipc classification number is a classification number obtained by classifying patent documents (specifications) through international patent classification, which is called international patent classification number and usually abbreviated as ipc number.