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Grand Cayman, Cayman Islands

O2micro International Limited

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USPTO Granted Patents = 224

% Expired Patents = 48.7

EPO Patents = 1

Trademarks = 10

Forward Citations = 3,590

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159 inventors (with patents filed for the assignee):

Constantin Bucur (42 out of 57 patents)

Marian Niculae (27 out of 35 patents)

Yung-Lin Lin (24 out of 47 patents)

4. Laszlo Lipcsei (23 out of 58 patents)

5. Guoxing Li (21 out of 86 patents)

6. Da Liu (17 out of 47 patents)

7. Liusheng Liu (15 out of 22 patents)

8. James Lam (15 out of 22 patents)

9. Sterling D Du (14 out of 25 patents)

10. Vlad Mihail Popescu-Stanesti (13 out of 19 patents)

11. Bruce Denning (12 out of 14 patents)

12. William Densham (8 out of 16 patents)

13. Xiaoguang Yu (8 out of 15 patents)

14. Serban-Mihai Popescu (8 out of 12 patents)

15. Bo Yu (7 out of 40 patents)

Core Competencies:

Battery Cell Monitoring

Power Management

Charging Systems

Energy Balance

Voltage Sensing

LED Driver

Integrated Circuits

GPS Positioning

Communication Circuits

Temperature Detection

Low Power Consumption

DC-DC Converters

224 patents: Sort by Forward Citations

1. 8836290 - Battery cell monitoring and balancing circuit (2014-09-16),

2. 8830159 - Controller circuitry for light emitting diodes (2014-09-09),

3. 8738827 - Circuits and methods for providing communication between a memory card and a host device (2014-05-27),

4. 8629649 - Battery charging apparatus with a common control loop for a low drop-out voltage regulator and a boost regulator (2014-01-14),

5. 8587264 - System, method and apparatus to automatically detect a type of a variable output DC power source (2013-11-19),

6. 8581552 - Battery state monitoring circuitry with low power consumption during a stand-by-state of a battery pack (2013-11-12),

7. 8376611 - Circuits and methods for temperature detection (2013-02-19),

8. 8350534 - Method and electronic circuit for efficient battery wake up charging (2013-01-08),

9. 8346977 - Device address assignment in a bus cascade system (2013-01-01),

10. 8344694 - Battery management system with energy balance among multiple battery cells (2013-01-01),

11. 8310206 - Monitoring battery cell voltage (2012-11-13),

12. 8305013 - Circuits and methods for controlling dimming of a light source (2012-11-06),

13. 8294424 - Monitoring battery cell voltage (2012-10-23),

14. 8261129 - Flexible bus architecture for monitoring and control of battery pack (2012-09-04),

15. 8239133 - Global positioning system and dead reckoning (GPSandDR) integrated navigation system (2012-08-07),

Company Overview

O2micro International Limited, headquartered in Grand Cayman, specializes in advanced battery management systems that enhance energy efficiency and performance. The company focuses on core technologies such as battery cell monitoring, power management, and charging systems, ensuring optimal energy balance and voltage sensing. Additionally, O2micro develops integrated circuits and LED drivers, contributing to various applications including GPS positioning. Their innovations support a range of industries, emphasizing reliability and sustainability in energy solutions.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Nov 10 2026

224 Patents

#6 in Grand Cayman

#8 in Cayman Islands

#3,818 in the World

Grand Cayman, Cayman Islands

O2micro International Limited

Forward Citations = 3,590

159 inventors:

Constantin Bucur (42 out of 57 patents)

Marian Niculae (27 out of 35 patents)

Yung-Lin Lin (24 out of 47 patents)

4. Laszlo Lipcsei (23 out of 58 patents)

5. Guoxing Li (21 out of 86 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: O2micro International Limited. Retrieved from https://idiyas.com/company/o2micro-international

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]

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