Press Releases

FREMONT, Calif., May 20, 2004--Lam Research Corporation (Nasdaq: LRCX) today announced selection by Infineon Technologies as 2003 Front-end Supplier of the Year. Suppliers are judged for overall performance on five criteria: purchasing, quality, logistics, technology, and business/management.

"The close working relationship that has developed between Lam and Infineon has enabled us to better understand their needs and implement focused programs that exceed their expectations," said Thierry Fried, vice president of Lam's European Operations. "We are extremely honored to receive this award and look forward to continuing to support Infineon in retaining its leadership position."

Statements made in this press release which are not statements of historical fact are forward-looking statements and are subject to the safe harbor provisions created by the Private Securities Litigation Reform Act of 1995. Such forward-looking statements relate, but are not limited, to the future relationship between Lam Research Corporation and Infineon and Lam's program implementation plans. Such statements are based on current expectations and are subject to uncertainties and changes in condition, significance, value and effect as well as other risks detailed in documents filed with the Securities and Exchange Commission, including specifically the reports on Form 10-K for the year ended June 29, 2003, and the Form 10-Q for the quarter ended March 28, 2004, which could cause actual results to vary from expectations. The Company undertakes no obligation to update the information or statements made in this press release.

Lam Research Corporation is a major supplier of wafer fabrication equipment and services to the world's semiconductor industry. Lam's common stock trades on the Nasdaq National Market under the symbol LRCX. The Company's World Wide Web address is http://www.lamrc.com.

Lam Research Corporation Contact:
Shawn Lynch, Corporate Communications, phone: 510/572-1726, e-mail: shawn.lynch@lamrc.com
Kathleen Bela, Investor Relations, phone: 510/572-4566, e-mail: kathleen.bela@lamrc.com