Growing community of inventors

Guangzhou, China

Zhang Chengen

Average Co-Inventor Count = 1.00

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.

Forward Citations = 9

Zhang ChengenZhang Chengen (2 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Fourstar Group Inc. (2 from 85 patents)


2 patents:

1. D1023330 - Facial scrubber

2. D964582 - Facial scrubber

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as of
1/9/2026
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