Growing community of inventors

Taipei, Taiwan

Tun-Chieh Chang

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 = 6

Tun-Chieh ChangHung-Jen Chen (2 patents)Tun-Chieh ChangTun-Chieh Chang (2 patents)Hung-Jen ChenHung-Jen Chen (19 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Mediatek Corporation (2 from 4,797 patents)


2 patents:

1. 10148867 - Camera auto-focus apparatus for performing lens position compensation to determine focused lens position and related camera auto-focus method

2. 9729776 - Camera auto-focus apparatus for performing lens position compensation to determine focused lens position and related camera auto-focus method

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1/14/2026
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