% Expired Patents = 16.7

Forward Citations = 33

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3 inventors (with patents filed for the assignee):

Yueh-Ying Lee (3 out of 3 patents)

Yueh-Hui Lee (3 out of 3 patents)

Su-Chen Shen (3 out of 11 patents)

6 patents: Sort by Forward Citations

1. 12224535 - Modularized socket structure (2025-02-11),

2. 11728597 - Structure of universal socket with polarity correction (2023-08-15),

3. 10992093 - Universal adapter structure (2021-04-27),

4. 9478927 - Expandable power adaptor (2016-10-25),

5. 9312625 - Shielding structure of safety socket (2016-04-12),

6. D720695 - Universal multi-plug adapter (2015-01-06),

Company Overview

Yang Ji Co., Ltd. is a leading manufacturer of innovative electronic products with a focus on quality and customer satisfaction. With a global presence and a strong commitment to research and development, Yang Ji Co., Ltd. continues to deliver cutting-edge solutions for a wide range of industries.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

6 Patents

#668 in Taipei

#2,095 in Taiwan

Taipei, Taiwan

Yang Ji Co., Ltd.

Forward Citations = 33

3 inventors:

Yueh-Ying Lee (3 out of 3 patents)

Yueh-Hui Lee (3 out of 3 patents)

Su-Chen Shen (3 out of 11 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Yang Ji Co., Ltd.. Retrieved from https://idiyas.com/company/yang-ji-company

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]