中国科技核心期刊
美国化学文摘社(CAS)数据库
美国EBSCO学术数据库
日本科学技术振兴机构数据库(JST)
The paper searched and analyzed statistically the patents related to the 4 biggest gold groups in China,compared the patent application status,patent technology portfolio,applicant distribution and technology domain,and patent technology value of the 4 biggest gold groups,revealed the inpidual technological development advantages and layout trend,and provided reference and guidance for reasonable layout and innovative adjustment of patented technology between the 4 biggest gold groups and other gold enterprises.