Growing community of inventors

Shanghai, China

Yiyan Feng

Average Co-Inventor Count = 10.00

ph-index = 4

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 = 28

Yiyan FengDavid Joseph Richmond (4 patents)Yiyan FengHoward C Richmond (4 patents)Yiyan FengMichael A Ragosta (4 patents)Yiyan FengRentong Wang (4 patents)Yiyan FengZhiyong Yu (4 patents)Yiyan FengZhiwu Yu (4 patents)Yiyan FengWenrui Dai (4 patents)Yiyan FengRuiju Liu (4 patents)Yiyan FengQianli Zhou (4 patents)Yiyan FengYiyan Feng (4 patents)David Joseph RichmondDavid Joseph Richmond (62 patents)Howard C RichmondHoward C Richmond (42 patents)Michael A RagostaMichael A Ragosta (29 patents)Rentong WangRentong Wang (9 patents)Zhiyong YuZhiyong Yu (6 patents)Zhiwu YuZhiwu Yu (6 patents)Wenrui DaiWenrui Dai (5 patents)Ruiju LiuRuiju Liu (4 patents)Qianli ZhouQianli Zhou (4 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Trade Box, LLC (4 from 12 patents)


4 patents:

1. D743624 - Hair curler

2. D735410 - Automatic hair styling device

3. D732738 - Automatic hair styling device

4. D724784 - Automatic hair styling device

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idiyas.com
as of
12/9/2025
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