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For the Inventor, By the Inventor

VG

Design Express Limited

Calculating rank
USPTO Granted Patents = 3

% Expired Patents = 33.3

Forward Citations = 4

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4 inventors (with patents filed for the assignee):

goldMedal Chun-Yen Chang (2 out of 53 patents)

silverMedal Po-Min Tu (1 out of 60 patents)

bronzeMedal Chun Yen Chang (1 out of 1 patent)

4.  Jet-Rung Chang (1 out of 1 patent)


3 patents:

1. 9136320 - Field effect transistor (2015-09-15),
2. 9000464 - Semiconductor structure for substrate separation and method for manufacturing the same (2015-04-07),
3. 8693253 - Vertically stackable NAND flash memory (2014-04-08),
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USPTO Data Jan 1 1976 - Oct 20 2026

3 Patents

#17 in

#197 in Virgin Islands, British

VG
VG

Design Express Limited

Forward Citations = 4

4 inventors:

goldMedal Chun-Yen Chang (2 out of 53 patents)

silverMedal Po-Min Tu (1 out of 60 patents)

bronzeMedal Chun Yen Chang (1 out of 1 patent)

4.  Jet-Rung Chang (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Design Express Limited. Retrieved from https://idiyas.com/company/design-express

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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