Growing community of inventors

Hong Kong, China

Jack Yang Chang

Average Co-Inventor Count = 2.40

ph-index = 3

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 = 118

Jack Yang Chang ↔ John Simon Davies (2 patents)Jack Yang Chang ↔ Simon Davies (1 patent)Jack Yang Chang ↔ Eddy Rinna (1 patent)Jack Yang Chang ↔ Patrick Hung Yan Ho (1 patent)Jack Yang ChangJack Yang Chang (3 patents)John Simon DaviesJohn Simon Davies (7 patents)Simon DaviesSimon Davies (10 patents)Eddy RinnaEddy Rinna (3 patents)Patrick Hung Yan HoPatrick Hung Yan Ho (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Gp Acoustics International Limited (3 from 33 patents)


3 patents:

1. D770414 - Loudspeaker

2. D710333 - Earpiece

3. D704162 - Headphone

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idiyas.com
as of
12/25/2025
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