% Expired Patents = 100.0

Forward Citations = 213

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3 inventors (with patents filed for the assignee):

Kwang-Hwa Liu (7 out of 14 patents)

Shen-Yao Liang (2 out of 11 patents)

Cheng-Nan Wu (1 out of 2 patents)

7 patents: Sort by Forward Citations

1. 9220140 - LED lighting driver (2015-12-22),

2. 9093894 - Multiple-level power control system (2015-07-28),

3. 8294379 - Dimmable LED lamp and dimmable LED lighting apparatus (2012-10-23),

4. 8247992 - LED driver circuit (2012-08-21),

5. 7750616 - Buck converter LED driver circuit (2010-07-06),

6. 7443119 - Circuit and method for controlling the rotating speed of a BLDC motor (2008-10-28),

7. 7295452 - Active power factor correction circuit and control method thereof (2007-11-13),

Company Overview

Green Mark Technology Inc. is a leading provider of sustainable technology solutions for businesses worldwide. Our innovative products and services help organizations reduce their carbon footprint and operate more efficiently. With a focus on sustainability and environmental impact, we strive to create a greener future for all.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

7 Patents

#574 in Taipei

#1,846 in Taiwan

Taipei, Taiwan

Green Mark Technology Inc.

Forward Citations = 213

3 inventors:

Kwang-Hwa Liu (7 out of 14 patents)

Shen-Yao Liang (2 out of 11 patents)

Cheng-Nan Wu (1 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Green Mark Technology Inc.. Retrieved from https://idiyas.com/company/green-mark-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]