| Precious metals have unique physical and chemical properties, so that it was widely used in life, industries, etc. Patent application is the most direct performance of technology development. In this paper, Chinese patents of precious metal-based brazing filler metals and related technologies were sorted out. A brief analysis of patent application type, patent applicant, some hot technical issues, trend of patent application were made in order to guide the R&D direction and the patent application and provide technical support for the development and patent protection of the precious metal-based brazing filler metals. |
