% Expired Patents = 100.0

Forward Citations = 0

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5 inventors (with patents filed for the assignee):

Yu Ngok Li (2 out of 295 patents)

Kuo-Hsin Chang (2 out of 17 patents)

Chung-Ping Lai (2 out of 31 patents)

4. Wenbo Ma (2 out of 55 patents)

5. Qiurong Liao (2 out of 8 patents)

2 patents: Sort by Forward Citations

1. 10907772 - LED lamp and LED emitter of the same (2021-02-02),

2. 10788164 - LED emitter and LED lamp having the same (2020-09-29),

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

2 Patents

#178 in Nanjing

#11,585 in China

Nanjing, China

Graphene Lighting China Limited

Forward Citations = 0

5 inventors:

Yu Ngok Li (2 out of 295 patents)

Kuo-Hsin Chang (2 out of 17 patents)

Chung-Ping Lai (2 out of 31 patents)

4. Wenbo Ma (2 out of 55 patents)

5. Qiurong Liao (2 out of 8 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Graphene Lighting China Limited. Retrieved from https://idiyas.com/company/graphene-lighting-china

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]