FREMONT, Calif., Jan. 16 /PRNewswire-FirstCall/ -- Mattson Technology, Inc. (NYSE:MTSN), a leading supplier of advanced process equipment used to manufacture semiconductors, today announced that the company will host a conference call on Wednesday, January 31, 2007 at 5:30 p.m. Eastern Time (2:30 p.m. Pacific Time). The conference call will cover 2006 fourth quarter and year-end earnings and current business conditions. Mattson will also webcast a slide presentation in conjunction with the conference call, which can be accessed at http://www.mattson.com/ under the "Investors" section. The company's conference call will be simultaneously available to all interested listeners via an audio webcast on the Internet. For access, visit Mattson's website http://www.mattson.com/ under the "Investors" section. A replay of the conference call will be available on Mattson's website for one week following the live broadcast. About Mattson Technology, Inc. Mattson Technology, Inc. is the leading supplier of dry strip equipment and the second largest supplier of rapid thermal processing equipment in the global semiconductor industry. The company's strip and RTP equipment utilize innovative technology to deliver advanced processing performance and productivity gains to semiconductor manufacturers worldwide for the fabrication of current- and next-generation devices. For more information, please contact Mattson Technology, Inc., 47131 Bayside Parkway, Fremont, Calif. 94538. Telephone: 800-MATTSON/510-657-5900. Fax: 510-492-5911. Internet: http://www.mattson.com/ . Mattson Technology Contact William Turner Mattson Technology, Inc. tel +1-510-492-6241 fax +1-510-492-5963 DATASOURCE: Mattson Technology, Inc. CONTACT: William Turner of Mattson Technology, Inc., +1-510-492-6241, or fax, +1-510-492-5963, or Web site: http://www.mattson.com/

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