Growing community of inventors

Beijing, China

Changqing Wan

Average Co-Inventor Count = 3.00

ph-index = 1

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.

Forward Citations = 16

Changqing WanDong Han (1 patent)Changqing WanDanfeng Zhang (1 patent)Changqing WanChangqing Wan (1 patent)Dong HanDong Han (12 patents)Danfeng ZhangDanfeng Zhang (9 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Legend (Beijing) Limited (1 from 5 patents)


1 patent:

1. 7146525 - Method for backing up and recovering data in the hard disk of a computer

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1/16/2026
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