Part 6. 1 in Chapter 2 of Part I of the Patent Examination Guide stipulates that the name of a known method can be used to define the shape and structure of the product in the claim (patent for utility model), but the steps and technical conditions of the method shall not be included. For example, the connection relationship of components can be defined by the names of known methods such as welding and riveting, without including the improvement of the method itself.
It is not difficult to see from the above provisions that the application for a patent for utility model can of course write the method characteristics, which is legal.