IPC classification is divided into 8 departments, namely:
A- the needs of human life (agriculture, light industry and medicine);
B- operation and transportation;
Chemistry and metallurgy;
D- textile and paper making;
E- fixed buildings;
F- mechanical engineering, lighting, heating, weapons and blasting;
G- physics;
Electricity.
Each classification number includes department, category, category, group and group.
Take the classification number B65C25/02 as an example.
Department b
B65—— Main categories
B65c- subclass
B65c 25/00 group
25/02 b65c group
G06Q 10