Growing community of inventors

Ta Ya Hsiang, Taiwan

Chester Chang

Average Co-Inventor Count = 1.00

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 = 129

Chester ChangChester Chang (3 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Other (3 from 832,812 patents)


3 patents:

1. 5203751 - Exercise mechanism

2. 4962925 - Exercise bicycle

3. 4961570 - Exercising mechanism for simulating climbing a ladder

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idiyas.com
as of
12/19/2025
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