The Cross-national Comparative Study of the Maintenance Time of Granted Patents in the Technical Field of Fixed Constructions in Different Countries
- DOI
- 10.2991/emeeit-15.2015.38How to use a DOI?
- Keywords
- fixed constructions; technical field; maintenance time; mean value; maintenance tendency
- Abstract
The maintenance information of granted patents in the technical field of fixed constructions in China, Germany, France, and Japan are empirically analyzed, which shows that there are many differences in the maintenance time of the patents granted by them. The mean value maintenance time in the technical field of fixed constructions is shorter than that of other technical fields. In the technical field of fixed constructions, the maintenance time of patents granted by France is longer than that of patents granted by China, Germany and Japan; the maintenance time of patents granted by China is the shortest; the maintenance tendencies of granted patents are greatly various in different periods. As the maintenance time extends, the number of patents falls dramatically in China, but in Germany, the number of the patents falls gradually. Large proportion of patents granted by France and Japan are distributed in long maintenance periods
- Copyright
- © 2015, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Jun Shen AU - Yongzhong Qiao PY - 2015/11 DA - 2015/11 TI - The Cross-national Comparative Study of the Maintenance Time of Granted Patents in the Technical Field of Fixed Constructions in Different Countries BT - Proceedings of the 2015 International conference on Engineering Management, Engineering Education and Information Technology PB - Atlantis Press SP - 186 EP - 191 SN - 2352-538X UR - https://doi.org/10.2991/emeeit-15.2015.38 DO - 10.2991/emeeit-15.2015.38 ID - Shen2015/11 ER -