% Expired Patents = 50.0

Forward Citations = 6

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15 inventors (with patents filed for the assignee):

Lee Yu-Chou (2 out of 2 patents)

Wen-Tse Tseng (1 out of 6 patents)

Chin-Tzu Kao (1 out of 16 patents)

4. Chih-Yu Chao (1 out of 14 patents)

5. Po-Fu Kuo (1 out of 4 patents)

6. Chen-sing Huang (1 out of 1 patent)

7. Cheng-sheng Chiang (1 out of 1 patent)

8. Hung-Jen Chu (1 out of 9 patents)

9. Hui-Chung Shen (1 out of 6 patents)

10. Wen-Jiunn Hsieh (1 out of 12 patents)

11. Da-Yo Liu (1 out of 1 patent)

12. Jui-Chung Chang (1 out of 1 patent)

13. Yi-Tsai Hsu (1 out of 5 patents)

14. Mine-Wei Tsai (1 out of 1 patent)

15. Chen Chiun-Hung (1 out of 1 patent)

6 patents: Sort by Forward Citations

1. 8337070 - Backlight module (2012-12-25),

2. 7561223 - Device and method for protecting gate terminal and lead (2009-07-14),

3. 7129026 - Lithographic process for multi-etching steps by using single reticle (2006-10-31),

4. 7005079 - Manufacturing method of light-guiding apparatus for using in backlight of liquid crystal display (2006-02-28),

5. 6979242 - Manufacturing method and structure of copper lines for a liquid crystal panel (2005-12-27),

6. 6844222 - Method for reducing contact impedance of thin film transistor (2005-01-18),

Company Overview

Chunghwa Picture Tubes, Ltd. is a leading manufacturer of display panels for televisions, monitors, and tablets. With over 30 years of experience in the industry, CPT is known for its high-quality products and innovative technology. The company is dedicated to providing customers with cutting-edge display solutions that enhance visual experiences in a wide range of applications.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

6 Patents

#3 in Bade

#2,095 in Taiwan

Bade, Taiwan

Chungwha Picture Tubes, Ltd.

Forward Citations = 6

15 inventors:

Lee Yu-Chou (2 out of 2 patents)

Wen-Tse Tseng (1 out of 6 patents)

Chin-Tzu Kao (1 out of 16 patents)

4. Chih-Yu Chao (1 out of 14 patents)

5. Po-Fu Kuo (1 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Chungwha Picture Tubes, Ltd.. Retrieved from https://idiyas.com/company/chungwha-picture-tubes

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]