Growing community of inventors

Qingdao, China

Quan Liu

Average Co-Inventor Count = 4.13

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 = 0

Quan LiuHui Liu (2 patents)Quan LiuKai Chen (2 patents)Quan LiuKun Wang (1 patent)Quan LiuHui Liu (4 patents)Quan LiuMinggang Li (1 patent)Quan LiuJibo Liu (1 patent)Quan LiuHui Huang (1 patent)Quan LiuXudong Liu (1 patent)Quan LiuJintao Du (1 patent)Quan LiuHe Zhang (1 patent)Quan LiuHuanjun Liu (0 patent)Quan LiuQuan Liu (3 patents)Hui LiuHui Liu (16 patents)Kai ChenKai Chen (7 patents)Kun WangKun Wang (7 patents)Hui LiuHui Liu (4 patents)Minggang LiMinggang Li (3 patents)Jibo LiuJibo Liu (2 patents)Hui HuangHui Huang (1 patent)Xudong LiuXudong Liu (1 patent)Jintao DuJintao Du (1 patent)He ZhangHe Zhang (1 patent)Huanjun LiuHuanjun Liu (0 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Crrc Qingdao Sifang Rolling Stock Research Institute Co., Ltd. (1 from 26 patents)

2. Qingdao Sri Technology Co., Ltd. (1 from 3 patents)

3. Crrc Qingdao Sifang Rolling Stock Research Institute Co., Ltd. X (1 from 1 patent)


3 patents:

1. 11072353 - Automatic uncoupling mechanism for couplers

2. 10655381 - Locking device and opening and closing mechanism having the same

3. 10435046 - Coupler uncoupling control mechanism

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as of
1/8/2026
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