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For the Inventor, By the Inventor

San Leandro, CA, United States of America

Weiguo Liu

This inventor holds 14 USPTO granted patents and 7 published patent applications and 2 EPO patents. Top assignees: Axt, Inc., Beijing Tongmei Xtal Technology Co., Ltd.. Active years: 2009-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Weiguo Liu. Retrieved from https://idiyas.com/inventor/weiguo-liu-t9z70qg2

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank
USPTO Granted Patents = 14 

% Patents Active = 100.0

 

Average Co-Inventor Count = 2.8

ph-index = 2

Forward Citations = 12(Granted Patents)


Location History:

  • San Leandro, CA (US) (2009 - 2024)
  • Fremont, CA (US) (2021 - 2024)

Company Filing History:

goldMedal12 out of 20 
 
Axt, Inc.
 patents
silverMedal2 out of 10 
 
Beijing Tongmei Xtal Technology Co., Ltd.
 patents

Years Active: 2009-2026

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14 patents (USPTO):Explore Patents
1. 12735808 - Low etch pit density, low slip line density, and low strain indium phosphide (2026-09-15),
2. 12398486 - Method and system for vertical gradient freeze 8 inch gallium arsenide substrates (2025-08-26),
3. 12336319 - Germanium single-crystal wafer, method for preparing germanium single-crystal wafer, method for preparing crystal bar, and use of single-crystal wafer (2025-06-17),
4. 12276044 - Low etch pit density gallium arsenide crystals with boron dopant (2025-04-14),
5. 12084790 - Low etch pit density 6 inch semi-insulating gallium arsenide wafers (2024-09-10),
6. 12054851 - Low etch pit density, low slip line density, and low strain indium phosphide (2024-08-06),
7. 11680340 - Low etch pit density 6 inch semi-insulating gallium arsenide wafers (2023-06-20),
8. 11608569 - Low etch pit density, low slip line density, and low strain indium phosphide (2023-03-21),
9. 11127867 - Monocrystalline germanium wafers, method for preparing the same, method for preparing ingots and use of monocrystalline wafers (2021-09-21),
10. 8647433 - Germanium ingots/wafers having low micro-pit density (MPD) as well as systems and methods for manufacturing same (2014-02-11),
11. 8506706 - Systems, methods and substrates of monocrystalline germanium crystal growth (2013-08-13),
12. 8361225 - Low etch pit density (EPD) semi-insulating III-V wafers (2013-01-29),
13. 8231727 - Crystal growth apparatus and method (2012-07-31),
14. 7566641 - Low etch pit density (EPD) semi-insulating GaAs wafers (2009-07-28),

Title: Inventor Weiguo Liu: Revolutionizing Technology in San Leandro

Introduction: Weiguo Liu is a visionary inventor based in San Leandro, CA, known for his groundbreaking contributions to the field of technology.

Latest Patents: Weiguo Liu holds several patents in the areas of artificial intelligence, renewable energy, and sustainable technologies, showcasing his innovative mindset and forward-thinking approach.

Career Highlights: With a career spanning over two decades, Weiguo Liu has worked with leading tech companies, research institutions, and universities to develop cutting-edge solutions that have had a significant impact on various industries.

Collaborations: Weiguo Liu has collaborated with top engineers, scientists, and researchers from around the world, fostering a culture of innovation and creativity in all his projects.

Conclusion: Weiguo Liu's passion for innovation and his relentless pursuit of excellence continue to inspire the next generation of inventors and shape the future of technology.

Profile summary based on public USPTO records.
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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