What are the patent types H04, G07 and so on found in China National Intellectual Property Administration?

This classification is an international IPC classification based on different technical fields and categories. It is divided into different departments, such as A, B, C, etc. Then the departments are divided into different categories, and then each category is divided into many subcategories. The reference answers to the two classification numbers you asked are also given upstairs.

Use any search engine to search the international IPC classification table, and you can find a complete classification.

In addition, many free patent search websites can also query IPC classification numbers (such as CNIPR, SooPAT, Baiteng, etc. ), enter the keyword to check the classification number, or enter the classification number to check the meaning.

In addition to the general international IPC classification, there are European classification and American-Japanese classification.

In addition, the design is different from the invention patent, which is applicable to the international Locarno classification.