% Expired Patents = 25.0

Forward Citations = 124

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11 inventors (with patents filed for the assignee):

Tung Lok Li (4 out of 12 patents)

Xiao Ling Chen (3 out of 117 patents)

John Robert McMillan (3 out of 3 patents)

4. Joseph Andrew Martin (1 out of 1 patent)

5. King Yin Fred Fu (1 out of 1 patent)

6. Hoi Ping Patrick Phen (1 out of 1 patent)

7. Mohamed Lebbai Moosa Naina (1 out of 2 patents)

8. Yung Piu Lau (1 out of 2 patents)

9. Shyamal K Kanoo (1 out of 1 patent)

10. Joseph John Lawn (1 out of 1 patent)

11. Donald J Arnold (1 out of 1 patent)

8 patents: Sort by Forward Citations

1. 8569110 - Pre-bonded substrate for integrated circuit package and method of making the same (2013-10-29),

2. 8513786 - Pre-bonded substrate for integrated circuit package and method of making the same (2013-08-20),

3. 8338924 - Substrate for integrated circuit package with selective exposure of bonding compound and method of making thereof (2012-12-25),

4. 7504712 - Electronic device with selective nickel palladium gold plated leadframe and method of making the same (2009-03-17),

5. 6822319 - Leadframe for enhanced downbond registration during automatic wire bond process (2004-11-23),

6. 5781879 - Semantic analysis and modification methodology (1998-07-14),

7. 5531860 - Structure and method for providing a lead frame with enhanced solder (1996-07-02),

8. 5121707 - Apparatus for coating materials in a vacuum chamber (1992-06-16),

Company Overview

QPL Limited is a leading provider of quality management and compliance solutions for the pharmaceutical and healthcare industries. With over 20 years of experience, our team of experts offers a range of services including validation, audit, and training to ensure our clients meet regulatory requirements and maintain the highest standards of quality. Visit our website to learn more about how QPL Limited can help your organization achieve success.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

8 Patents

#397 in Hong Kong

#3,464 in China

Hong Kong, China

Qpl Limited

Forward Citations = 124

11 inventors:

Tung Lok Li (4 out of 12 patents)

Xiao Ling Chen (3 out of 117 patents)

John Robert McMillan (3 out of 3 patents)

4. Joseph Andrew Martin (1 out of 1 patent)

5. King Yin Fred Fu (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Qpl Limited. Retrieved from https://idiyas.com/company/qpl

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]