Growing community of inventors

Taichung, Taiwan

Li-Heng Chang

Average Co-Inventor Count = 4.00

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 = 2

Li-Heng ChangChin-Chia Liu (1 patent)Li-Heng ChangPao Pao Liu (1 patent)Li-Heng ChangYu-Zen Tseng (1 patent)Li-Heng ChangLi-Heng Chang (1 patent)Chin-Chia LiuChin-Chia Liu (3 patents)Pao Pao LiuPao Pao Liu (2 patents)Yu-Zen TsengYu-Zen Tseng (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Footwear & Recreation Technology Research Institute (1 from 3 patents)


1 patent:

1. 9333980 - Assistance device for climbing stairs

Please report any incorrect information to support@idiyas.com
idiyas.com
as of
1/3/2026
Loading…