Analysis of Patent Layout for Maglev Train Superconducting Magnet Technology

Abstract

［Objective］ Superconducting magnet is the core of superconducting electric maglev trains, and countries such as Japan, Germany, and South Korea have conducted years of research and development in this area. To promote further research and development of superconducting electric maglev trains in China, it is necessary to study the global distribution of patents related to superconducting magnets, including the geographical distribution and patent holders. ［Method］ Based on patent data retrieved from the Derwent Innovation Index (2001-2022) and incoPat patent database, relevant data on superconducting magnet technology are statistically analyzed, including the annual number of patent applications from 2001 to 2022, the geographical distribution of these patents, and the number of patents held by various patent holders. Superconducting magnet technology is further divided into 13 technical subcategories, and an analysis of the main countries and leading patent holders for each subcategory is conducted. Finally, recommendations are provided for Chinese institutions and enterprises on patent layout strategies for superconducting magnets. ［Result & Conclusion］ The development of superconducting magnet technology demonstrates a trend of multi-country progression. China has already become a focal point for patent layout in superconducting magnet technology, although foreign enterprises still hold certain advantages in patent numbers and core technological subcategories (e.g., cooling systems, current leads, overall magnet structure). Chinese enterprises should develop their own strategies targeting the patent layout strategies of foreign enterprises.

Keywords

• maglev train
• superconducting magnet
• patent layout