Average Co-Inventor Count = 2.57
ph-index = 2
The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.
Company Filing History:
1. Beijing Watch Data System Co., Ltd. (2 from 8 patents)
2. Beijing Watchdata Systems Co., Ltd. (1 from 1 patent)
3 patents:
1. 8589216 - Intelligent charging system and method for use in a parking lot
2. 8496174 - Smart card operating system and method
3. 8255706 - Dual usage smart card of CPU and logical encryption and its data synchronization method