Growing community of inventors

Akishima, Japan

Zhongkai Yang

Average Co-Inventor Count = 2.00

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 = 29

Zhongkai YangEtsuo Kawaji (1 patent)Zhongkai YangZhongkai Yang (1 patent)Etsuo KawajiEtsuo Kawaji (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Foster Electric Company, Limited (1 from 64 patents)


1 patent:

1. D726165 - Earphone

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12/12/2025
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