"China Publicly Listed Firms Patent Database" (with Zhenxuan Wang and Yang Zheng)

• • merge China publicly listed firms in stock markets of Shanghai (SH), Shenzhen (SZ), and Beijing (BJ) from 1990 to 2022 with patent applications from SIPO of China from 1985 to 2020.

  • account for corporate tree of listed firms (i.e., parent company, subsidiaries, and joint ventures)

    • 4,826 unique parent firms (SH: 2,088, SZ: 2,639, BJ:99) and 119,689 unique subsidiaries and joint ventures

    • 2.97 million patent publications and 1.65 million patent granted

  • use echart.js for data visualization (an example of the 1990-2010 period). [link]

"China University Patent Database" (with Tianqi Li)

• • patent applications associated with Chinese university and college during the 1985-2016 period

  • use echart.js for data visualization. [link]