% Expired Patents = 33.3

EPO Patents = 1

Forward Citations = 18

Loading Chart...

10 inventors (with patents filed for the assignee):

Shih-Wei Hung (1 out of 11 patents)

Jun-Hua Shao (1 out of 1 patent)

Kuo Hou (1 out of 1 patent)

4. Cheng-Jun Liu (1 out of 1 patent)

5. Lu Hu (1 out of 1 patent)

6. Wen-Chi Kuo (1 out of 1 patent)

7. Zhenyuan Liu (1 out of 1 patent)

8. Qiao-Wei Li (1 out of 1 patent)

9. Ming-Kai Hsiao (1 out of 1 patent)

10. Wei Guo (1 out of 36 patents)

11. Wen-Chi Kuo (0 patent)

12. Lu Hu (0 patent)

3 patents: Sort by Forward Citations

1. 8373977 - Movable touch module and electronic device using the same (2013-02-12),

2. 8217594 - Light emitting device with variable volume (2012-07-10),

3. 7959311 - Portable electronic device having illuminated keyboard (2011-06-14),

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

3 Patents

#655 in Shanghai

#8,337 in China

Shanghai, China

Protek (Shanghai) Limited

Forward Citations = 18

10 inventors:

Shih-Wei Hung (1 out of 11 patents)

Jun-Hua Shao (1 out of 1 patent)

Kuo Hou (1 out of 1 patent)

4. Cheng-Jun Liu (1 out of 1 patent)

5. Lu Hu (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Protek (Shanghai) Limited. Retrieved from https://idiyas.com/company/protek-shanghai

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

1 patent (EPO):

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]