Growing community of inventors

Tali, Taiwan

Pi-Yi Chang

Average Co-Inventor Count = 3.00

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 = 11

Pi-Yi ChangChih-Wei Hu (2 patents)Pi-Yi ChangEric Tsai (2 patents)Pi-Yi ChangPi-Yi Chang (2 patents)Chih-Wei HuChih-Wei Hu (16 patents)Eric TsaiEric Tsai (16 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Apex Mfg. Co., Ltd. (2 from 62 patents)


2 patents:

1. 7644849 - Effort-saving stapler

2. 7604149 - Effort-saving stapler

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as of
1/2/2026
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