If the name of a patented product is formed by adding a qualifier before the generic name, its technical field should also be the technical field described in the generic name, and the technical field described in the specific patent should be checked in the International Patent Classification (IPC- International Patent Classification).
The latest edition of the international patent classification table has been published. The classification table came into effect on June 65438+ 10/2006.
This classification table is the advanced version of the eighth edition, with about 70 thousand articles, including the basic edition and the items further subdivided into the basic edition. Advanced version is used by industrial property offices and large industrial property offices with the lowest amount of PCT documents to classify a large number of patent documents. This classification table is divided into 9 volumes, namely the first volume-the needs of human life; B. volume-handling and transportation; Volume III-Chemistry and Metallurgy: Volume D-Textile and Paper Making; Buildings with fixed volume; Volume f-mechanical engineering, lighting, heating, weapons and blasting; G volume-physics; H volume-electricity; Volume 9-User Guide.