Abstract
The International Patent Classification System (IPC) provides a hierarchical tool of language independent symbols for the classification of patents according to the different technological fields to which they pertain, and the patents of each technological field should have their own technical characteristics. Using the information of patents in performing operations and transporting technological field, which were granted by the United States, Japan, Korea, Germany, French and China, conclusions can be drawn: firstly, the distributions of the technological fields of granted patents are related to the technology advantages of countries; Secondly, the respective trend of the maintenance time of granted patents in the performing operations and transporting technological field in six countries are consistent with the trend of the maintenance time of granted patents in all technological fields in six countries; Thirdly, the termination rates of granted patents in the longer period of maintenance times are larger than that of granted patents in the shorter period of maintenance times in this technological field in the United States, while the termination rates of granted patents in Japan and France mainly concentrate on the 6–10 years periods and the 11–15 years periods, and the termination rates of granted patents by China, Korea and Germany decrease with the period of maintenance time growth.
This paper was published at the 2015 2nd International Conference on Sensors, Instrument and Information Technology. Authors are Yongzhong Qiao and Yan Zhang.
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Qiao, Y., Zhang, Y. (2017). Empirical Research on the Maintenance Time of Granted Patents in the Performing Operations and Transporting Technological Field in Six Countries. In: Qiao, Y. (eds) Maintenance Time and the Industry Development of Patents. Springer, Singapore. https://doi.org/10.1007/978-981-10-1621-9_4
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