LAM RESEARCH CORPORATION RECEIVES ISO 9001:2000 REGISTRATION

FREMONT, Calif., August 9, 2001 — Lam Research Corporation (Nasdaq: LRCX) today announced formally receiving ISO 9001:2000 Quality System Registration by the National Standards Authority of Ireland (NSAI). The scope of the registration includes the design, manufacture, installation, and servicing of semiconductor wafer fab process equipment. The new ISO 9001:2000 standard expands requirements of the earlier ISO 9001:1994 standard for the integration of process-based quality management systems. Lam is one of the first leading semiconductor equipment companies in the world to achieve registration to this new Quality System Standard.

“Achieving this registration demonstrates our continued strong commitment to increasing customer trust and to improving our product and service quality and process management systems,” stated Steve Newberry, Lam’s president and COO.

“Assimilating the ISO 9001:2000 framework within our Lam Quality Management System enables us to better maintain our leadership position within the increasingly competitive semiconductor equipment industry,” stated Bob Rudy, Lam’s vice president of business excellence. “We are honored to be one of the first companies in the world to attain this distinction.”

NSAI’s Quality Management System Registration program registers organizations whose quality management systems conform to international quality standards, such as the International Organization for Standardization (ISO) 9000 series. The new ISO 9001:2000 standard was developed by an international body of quality management system experts and was officially released in December 2000. Qualifying for registration is an extensive process, taking at least six months to complete detailed inspection and evaluation of documentation and processes. Lam’s registration audit took place in mid-July and was conducted by a team of auditors from NSAI’s headquarters in Dublin, Ireland.

This press release contains certain forward-looking statements which are subject to the Safe Harbor provisions created by the Private Securities Litigation Reform Act of 1995. Such forward-looking statements include those relating to the projection of future market conditions, growth expectations and economic trends. Such statements are based on current expectations and are subject to risks, uncertainties, and changes in condition, significance, value and effect including those risks detailed in documents filed with the Securities and Exchange Commission, and specifically the report on Form 10-K for the fiscal year ended June 24, 2001 and the Form 10-Q for the quarter ended September 23, 2001, which could cause actual results to vary from expectations. The company undertakes no obligation to update the information in this Press Release.

Lam Research Corporation is a leading 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.