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For the Inventor, By the Inventor

Taipei, Taiwan

Prodisc Technology Inc.

USPTO Granted Patents = 24

% Expired Patents = 83.3

Trademarks = 1

Forward Citations = 92

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35 inventors (with patents filed for the assignee):

goldMedal Chih-Neng Chang (11 out of 14 patents)

silverMedal Ke-Shu Chin (9 out of 10 patents)

bronzeMedal An-Hwa Yu (9 out of 10 patents)

4.  Kuang-Hua Chang (5 out of 6 patents)

5.  Chih-Huang Wang (4 out of 4 patents)

6.  Yin-Tai Keng (3 out of 4 patents)

7.  Ta-Kun Kung (3 out of 3 patents)

8.  Jui Hung Yen (3 out of 3 patents)

9.  Li-Teng Keng (2 out of 2 patents)

10.  Yen-Chun Chou (2 out of 2 patents)

11.  Nai-Yueh Liang (2 out of 5 patents)

12.  Jui-Hsin Lin (2 out of 2 patents)

13.  Shih-En Chen (2 out of 2 patents)

14.  Wen Hu Wang (2 out of 2 patents)

15.  Kuo-Ching Hsieh (1 out of 1 patent)


24 patents:

1. 7400450 - Light-splitting device (2008-07-15),
2. 7390548 - Optical information storage medium (2008-06-24),
3. 7386215 - Projection system and light tunnel thereof (2008-06-10),
4. 7375884 - Rear projection screen and optical device thereof (2008-05-20),
5. 7367694 - Projector and lamp housing thereof (2008-05-06),
6. 7287863 - Light tunnel with gradient filter layer (2007-10-30),
7. 7218464 - Aligning-assembling method for color wheel (2007-05-15),
8. 7210821 - Light-splitting device (2007-05-01),
9. 7163730 - Optical information storage medium and method for manufacturing the same (2007-01-16),
10. 7125124 - Projection system (2006-10-24),
11. 7083882 - Coating method for a color filter and aligning-assembling method by using the same (2006-08-01),
12. 7064909 - Image pickup lens assembly with a filter lens (2006-06-20),
13. 7061701 - Color wheel (2006-06-13),
14. 6898030 - Camera lens assembly (2005-05-24),
15. 6896376 - Color wheel and motor for the same (2005-05-24),
Company Overview
Prodisc Technology Inc. is a leading manufacturer based in Taipei, Taiwan, specializing in optical storage media and related technologies. The company focuses on the development and production of high-quality optical discs, including CD, DVD, and Blu-ray formats, catering to various industries such as entertainment, data storage, and software distribution. Prodisc is committed to innovation and quality, leveraging advanced manufacturing processes to meet the evolving needs of its global clientele.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

24 Patents

#160 in Taipei

#711 in Taiwan

#26,686 in the World

Taipei, TW
Taipei, Taiwan

Prodisc Technology Inc.

Forward Citations = 92

35 inventors:

goldMedal Chih-Neng Chang (11 out of 14 patents)

silverMedal Ke-Shu Chin (9 out of 10 patents)

bronzeMedal An-Hwa Yu (9 out of 10 patents)

4.  Kuang-Hua Chang (5 out of 6 patents)

5.  Chih-Huang Wang (4 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Prodisc Technology Inc.. Retrieved from https://idiyas.com/company/prodisc-technology

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]
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