O2Micro Granted Patent, Delays Hong Kong Listing

January 02, 2006 by Jeff Shepard

O2Micro International Ltd. was granted 37 claims under United States patent number 6,965,221 for its dc-dc converter controller. This patent describes an IC design concept called "Constant Ripple Current" technology that brings the high efficiency to portable electronic devices under light and heavy load conditions.

This innovation is expected to reduce design time and enables cost-effective power supplies for today's microprocessor and peripheral chips. Portable electronic devices include notebook computer, cell phone, PDA (Personal Digital Assistant), PMP (Portable Media Player) and MP3 player applications.

"This significant new technology enables highest efficiency, lower cost systems and forms the basis for all of O2Micro's dc-dc controller product offerings," according to Alex Hartular, vice president of O2Micro's Intelligent Power business unit.

In an unrelated development, O2Micro announced it has postponed the implementation of its offering and listing on the Hong Kong Stock Exchange.

The timing of the global offering and listing on the HKSE is subject to the approval of the HKSE and the board's determination based on market conditions and other factors.

The listing on the HKSE, at such time that it is completed, will be in addition to the current listings on The Nasdaq National Market and Cayman Stock Exchange (CSX).

A registration statement relating to the securities proposed to be offered by the company in the U.S. has been filed with the U.S. Securities and Exchange Commission but has not yet become effective.