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KleenAir Awarded New NOx Reduction Patent

16 December 1999

KleenAir Awarded New NOx Reduction Patent

    DANA POINT, Calif.--Dec. 15, 1999--KleenAir Systems Inc. (OTCBB:KAIR) Wednesday announced that KleenAir received it's latest patent award on November 30 of U.S. Patent No. 5,992,141.
    It first patent, U.S. No. 5,224,346, was acquired in April 1995, and its second patent, U.S. No. 5,609,026, was issued in 1997 after successfully fending off a challenge in Patent Court.
    The company believes that these patents, in combination, significantly strengthens the company's control of nitrous oxide (NOx) reduction technology involving the injection of ammonia into the exhaust stream of vehicles. This chemistry has been used for many years to reduce NOx for stationary power plants, but the company was the first to downsize the technology and its cost to be practical for all types of vehicles.
    KleenAir has a unique computer controlled ammonia system, the NOxMaster(TM), which, when injected into the exhaust stream, interacts with NOx produced during combustion. The result converts environmentally hazardous NOx into harmless nitrogen and water. The new patent deals with techniques to enhance the reactivity of the ammonia with the NOx in the exhaust. It also covers controller technology that regulates ammonia injection based upon engine combustion activity sensed by the controller's computer
    The company's technology works with gasoline, diesel, natural gas and LPG fuels to reduce whatever levels of NOx are generated by the combustion of these fuels. Current EPA and California Air Resources Board attention is focusing on environmental pollution resulting from the use of diesel fuels. The company believes its technology presents a major post-engine exhaust treatment solution to diesel pollution. The company's new NOxMaster(TM) Diesel Catalytic Converter, in addition to achieving dramatic reductions of NOx, also substantially eliminates CO and Hydrocarbons as well as significantly reducing particulates.
    The company is in the business of developing NOx reduction systems for the automotive market together with appropriate catalytic converters designed to operate effectively with the company's patented products.

    Safe Harbor Act Disclaimer

    The statements contained in this release and statements that the company may make orally in connection with this release are not historical fact and are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Actual results may differ materially from those forward-looking statements, as such statements involve risks and uncertainties that could significantly impact the company's business, and the actual outcome and results may differ materially.