Growing community of inventors

Taichung, Taiwan

Guang-Shang Chang

Average Co-Inventor Count = 4.38

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 = 50

Guang-Shang ChangChien-Chin Chan (10 patents)Guang-Shang ChangChi-Wen Lin (6 patents)Guang-Shang ChangChih-Wen Pan (6 patents)Guang-Shang ChangChin-Shui Lin (5 patents)Guang-Shang ChangKou-Long Tseng (5 patents)Guang-Shang ChangChien-Ming Peng (2 patents)Guang-Shang ChangKou-Lung Tseng (2 patents)Guang-Shang ChangJian-Ming Peng (1 patent)Guang-Shang ChangJim Peng (1 patent)Guang-Shang ChangGuang-Shang Chang (10 patents)Chien-Chin ChanChien-Chin Chan (12 patents)Chi-Wen LinChi-Wen Lin (8 patents)Chih-Wen PanChih-Wen Pan (7 patents)Chin-Shui LinChin-Shui Lin (5 patents)Kou-Long TsengKou-Long Tseng (5 patents)Chien-Ming PengChien-Ming Peng (9 patents)Kou-Lung TsengKou-Lung Tseng (5 patents)Jian-Ming PengJian-Ming Peng (1 patent)Jim PengJim Peng (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Umax Data Systems, Inc. (8 from 157 patents)

2. Umax Data System Inc. (2 from 22 patents)


10 patents:

1. 6433826 - Adjusting mechanism for the lens set of an imaging system

2. 6408138 - Camera view-correction apparatus for taking pictures

3. 6302597 - Hidden viewfinder for camera

4. 6266090 - Device for controlling a rotation of a lens in a digital camera

5. 6161966 - Multi-blade lens-aperture control mechanism

6. 5946515 - Aperture switching device

7. 5930543 - Aperture selection mechanism for camera

8. 5930544 - Lens movement mechanism for digital camera

9. 5907730 - Moveable lens apparatus for digital camera

10. 5815759 - Extended adjusting mechanism for the lens set of an imaging system

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as of
12/22/2025
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