Abstract:

Lithium battery is not only widely used in mobile phone, computers, cameras and other electronic products, the development of new energy vehicles also rely on the promotion of lithium battery technology. In order to explore the current development situation and distribution of lithium battery technology in the Unites States, find out the relationship between technology development and scientific research, and provide reference for China's lithium battery products in the American market competition, this paper uses the methods and indicators of patent citation analysis to take macro statistics and micro analysis on the citation status of lithium battery patents in the United States Patent and Trademark Office (USPTO) database. It finds that lithium battery technology distribution is not balanced and the number of lithium battery patents in the South Korea, the United States and Japan is much more than other countries and regions. The key technologies are mainly in some enterprises, such as Samsung Group in South Korea and Sanyo Electric Co., Ltd in Japan.

Key words: USPTO, 　Patents citation, 　Patentometric, 　Lithium battery, 　Patent