Which country ranked second in the global blockchain patent application in 20021year? In 20021year, the number of patent applications for blockchain in the world ranked second in the United States. On February 20th, 20021,12, Wang Qian released the Analysis Report on Market Prospect and Investment Strategic Planning of Blockchain Industry in China (hereinafter referred to as the Report). According to the report, as of February 9, 20021,12, the number of patent applications in the global blockchain industry ranked first in China. Therefore, in 20021year, the number of patent applications for blockchain in the world ranked second in the United States.