Sono-Tek Assigned Patent for Its MediSonic Technology

Milton, NY � February 21, 2008 � Sono-Tek Corporation, the world leader in the development and application of liquid ultrasonic atomization technology into precision and liquid conserving spraying and coating application systems, announces that it has recently been assigned a patent for MediSonic by the USPTO.

The patent is entitled �Process for Coating Three Dimensional Substrates with Thin Organic Films and Products� and relates to equipment and processes for the creation of thin organic films on complicated substrates using Sono-Tek�s ultrasonic nozzle technology in combination with a vacuum system. Examples of potential and actual applications of this technology include the coating of implantable medical devices such as drug-coated cardiac stents, diabetes monitors, and other complicated geometries. The advantage of the MediSonic unit is that it can coat many small devices simultaneously by the interaction of the ultrasonically created vapor cloud in the vacuum chamber.

For more information about MediSonic technology and the patent, visit http://www.sono-tek.com under the heading of �MediSonic.�

About Sono-Tek Corporation

Sono-Tek is the world leader in the development and application of liquid ultrasonic atomization technology into nozzle systems and spraying and coating application systems. Compared to conventional pressure spraying methods, the company�s ultrasonic nozzles do not clog, reduce liquid usage, waste, and environmental impact while achieving much more precise, uniform, thin film coatings. Sono-Tek is continually developing new applications for its unique technology, replacing wasteful practices in a world that is growing ever more environmentally sensitive. For more information, visit the company at http://www.sono-tek.com.