What is the difference between China patent number (after 1993) and international patent number? Thank you, everyone.

It is very popular to say that a patent has applied for an international patent. This patent, which has applied for an international patent, may have a patent right in China, the United States, or several countries. Not all countries in the world have patents. An international patent is applied as follows: In which country will the applicant apply for a patent right after applying for an international patent? Apply for a few, and there will be patents and patent protection in several countries in the corresponding region. Those who do not need patent protection shall not enjoy the patent right. In other words, someone applied for an international patent. As long as he does not claim the patent right in China, anyone who uses his patent in China without the permission of the patentee does not constitute infringement. For example, washing clothes with washing powder is patented, but you can apply for a patent to invent washing powder as feed. Because the two uses of washing powder are far apart, this is an innovation. If you invent a different process based on the original washing powder, you can also apply for a patent for this. Like a pencil, it is a patent. You can apply for a patent by adding an eraser to the pencil.