O2Micro’s Battery Fuel Gauge Circuit Receives Patent

GEORGE TOWN, Grand Cayman--(BUSINESS WIRE)--O₂Micro^® International Limited (NASDAQ: OIIM)(SEHK: 0457), a leading supplier of innovative power management and security components, was issued 17 claims under United States patent number 7,531,989 for its Battery Fuel Gauge Circuit.

“This invention accurately and efficiently predicts the remaining capacity of rechargeable batteries.”

This patented circuit measures the State-of-Charge (SOC) or capacity of a rechargeable battery pack. This patent simultaneously enables an accurate and cost effective circuit for measuring battery pack SOC for users to gauge the ability to complete their tasks. For example: notebook, cell phone, digital camera and other portable electronic appliances.

William Kao, vice president, O₂Micro, commented, “This invention accurately and efficiently predicts the remaining capacity of rechargeable batteries.”

About O₂Micro

Founded in April 1995, O₂Micro develops and markets innovative power management, and security components for the Computer, Consumer, Industrial, and Communications markets. Products include Intelligent Lighting, Battery Management, Power Management, and SmartCardBus^® products.

O₂Micro International maintains an extensive portfolio of intellectual property with 11,830 patent claims granted, and over 14,000 more pending. The company maintains offices worldwide. Additional company and product information can be found on the company website at www.o2micro.com.

O₂Micro, the O₂Micro logo, SmartCardBus, and combinations thereof are registered trademarks of O₂Micro. All other trademarks are the property of their respective owners.

Statements made in this release that are not historical, including statements regarding O₂Micro's or management's intentions, hopes, beliefs, expectations, representations, projections, plans or predictions of the future, are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements involve risks and uncertainties that may cause actual results to differ materially from those set forth in these statements. Factors that could cause actual results to differ materially include risks and uncertainties such as reduced demand for products of electronic equipment manufacturers which include O₂Micro's products due to adverse economic conditions in general or specifically affecting O₂Micro's markets, technical difficulties and delays in the developments process, and errors in the products. You are also referred to the Form F-1 in connection with the company's initial public offering in August 2000, Form F-3 in connection with the company's public offering in November 2001, and the annual reports on Form 20-F, which identify important risk factors that could cause actual results to differ from those contained in the forward-looking statements. The company assumes no obligation to update or revise any forward-looking information, whether as a result of new information, future events or otherwise.