Growing community of inventors

Taipei, Taiwan

Chao-Han Chang

Average Co-Inventor Count = 1.00

ph-index = 4

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 = 62

Chao-Han ChangChao-Han Chang (7 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Pchome Online, Inc. (3 from 7 patents)

2. Nextedge Labs, Inc. (3 from 3 patents)

3. Ipevo, Inc. (1 from 24 patents)


7 patents:

1. D1108518 - USB camera

2. D1013017 - USB camera

3. D892900 - USB camera

4. D582953 - Web cam

5. D570326 - Internet phone

6. D556179 - Conference phone

7. D554102 - Phone

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as of
1/6/2026
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