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                                                                    EXHIBIT 99.1



[LAM RESEARCH LOGO]



FOR IMMEDIATE RELEASE


Contacts:  Lisa Garber                           Kathleen Bela
           Corporate Communications              Investor Relations
           Lam Research Corporation              Lam Research Corporation
           Phone: 510/572-4538                   Phone: 510/572-4566
           Fax:   510/572-2935                   Fax:   510/572-6454
           e-mail: lisa.garber@lamrc.com         e-mail: kathleen.bela@lamrc.com



LAM RESEARCH CORPORATION PURCHASES POST-CMP CLEANING TECHNOLOGY FROM OLIVER
DESIGN, INC.


FREMONT, Calif., November 15, 1999--Lam Research Corporation (Nasdaq: LRCX)
today announced the purchase of research and development technology from Oliver
Design, Inc. The purchase includes Intellectual Property rights related to
cleaning semiconductor wafers, as well as licenses to develop semiconductor
applications for Oliver's leading-edge cleaning technology originally developed
for the disk drive industry. A key benefit of the technology purchase is the
enhancement of development activities in connection with a 300 mm cleaning
design, elements of which can be incorporated into Lam's Teres(TM) integrated
Chemical Mechanical Planarization (CMP) system.

"Oliver's technology is an excellent match for our CMP and post-CMP wafer
cleaning product portfolio," said Dr. Willy Krusell, Lam's vice president
CMP/Cleaning Engineering/Technology. "Due to the rapidly growing market
acceptance of Teres, and our customers' requirements for a 300 mm product
solution, we will begin integrating the Oliver design into our 300 mm CMP
and cleaning development efforts," concluded Krusell.

                                    ~ more ~

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LAM RESEARCH PURCHASES POST-CMP CLEANING TECHNOLOGY FROM OLIVER DESIGN, INC.
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In connection with the purchase, which totals approximately $8.8 million, Lam
will take a one-time charge of approximately $7.3 million during the current
quarter of its fiscal year 2000. Lam may make up to $2 million in additional
license payments to Oliver, in the event it is successful in commercializing the
technology. Those additional license payments will be charged to future periods,
as incurred.

"Safe Harbor" Statement Under the Private Securities Litigation Act of 1995:
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 relate to anticipated
performance, acceptance, capabilities, applications, and competitiveness of the
company's products and market transition to new processes. Such statements are
based on current expectations and are subject to risks, uncertainties, and
changes in condition, such as may arise from introduction of such products into
production, their ability to perform consistent with current expectations and
the Company's ability to integrate and adapt new technologies into its
commercial products, and other risks detailed in documents filed with the
Securities and Exchange Commission, including specifically the report on Form
10-K for the year ended June 30, 1999, and the Form 10-Q for the quarter ended
September 26, 1999. The company undertakes no obligation to update the
information in this Press Release.

For Oliver Design, Inc.:

Oliver Design, Inc. is a leading supplier of disk cleaning equipment, offering
modular, fully automated systems and services to the worldwide data storage
industry. The company provided products as an OEM supplier to the global
semiconductor market, and will continue to supply the data storage markets with
innovative cleaning solutions. Oliver's World Wide Web address is
http://www.oliverdesign.com.

For Lam Research Corporation:

Lam Research Corporation is a leading supplier of front-end wafer processing
equipment and services to the worldwide semiconductor manufacturing industry.
The company's common stock trades on the Nasdaq National Market under the symbol
LRCX. Lam's World Wide Web address is http://www.lamrc.com.


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