Is the patent of stone reliable?

Reliable. According to China patent information network official website query. As of August 2 1 2023, Stone's patent has passed the examination and approval of the relevant state departments, and has gone through five stages of patent application: acceptance, preliminary examination, publication, actual examination and authorization, so Stone's patent is reliable. A patent is an invention protected by legal norms. An invention that submits a patent application to a national or regional examination and approval authority and, after passing the examination according to law, grants the patent applicant the exclusive right to invent within a specified time.