2. New tangible products, product shapes, processing methods, processes and formulas can all be patented.
3. If you want to apply for a patent for the function you mentioned, you must provide the schematic diagram, circuit diagram and other technical solutions to realize the function, so that ordinary technicians in the industry can realize the function you want without creative labor according to your technical solutions. In the claims of the application documents, generally, functions cannot be written, only technical features such as structure and principle can be written. Without this technical feature, you can't be authorized, because you don't have the three characteristics of "practicality, creativity and novelty" of this patent.
International patent (PCT) needs to be applied in all countries in the world, and can be protected in all authorized countries in the world, while national patents can only be protected in their own countries.
5. To apply for a patent for utility model, the applicant shall be authorized about 1 year after submitting the qualified application documents; An application for a patent for invention can only be authorized after substantial examination, which generally takes about 3 years.