EXHIBIT 99.1


      FOR IMMEDIATE RELEASE           CONTACT: David Ringler       
                                         Investor Relations/       
                                      Corporate Communications     
                                      Lam Research Corporation     
                                        4650 Cushing Parkway       
                                      Fremont, California 94538    
                                        Tel (510) 572-6848         
                                        Fax (510) 572-6454         
                                      email david.ringler@lamrc.com


                     LAM RESEARCH CORPORATION ADOPTS
                         SHAREHOLDER RIGHTS PLAN

                Fremont, California, January 24, 1997 - Lam
      Research Corporation (Nasdaq: LRCX) today announced that its
      Board of Directors had adopted a Shareholder Rights Plan in
      which rights will be distributed as a dividend at the rate of
      one right for each share of common stock, par value $.001 per
      share, of the Company held by stockholders of record as of
      the close of business on January 31, 1997.  In connection
      with the adoption of the Shareholder Rights Plan, the Board
      of Directors also adopted a number of amendments to the
      Company's bylaws, including amendments requiring advance
      notice of stockholder nominations of directors, stockholder
      proposals, actions by written consent by stockholders and a
      stockholder's intention to cumulate votes.  The bylaw
      amendments also eliminate the right of stockholders to call
      special meetings of stockholders.

                The Rights Plan is intended to protect stockholders
      by deterring coercive takeover tactics, including the
      accumulation of shares in the open market or through private
      transactions, and to prevent an acquiror from gaining control
      of the Company without offering a fair price to all of the
      Company's stockholders.  The Rights will expire on January
      31, 2007.  The bylaw amendments are intended to provide
      advance notice of stockholder initiatives so that the Board
      of Directors, as well as all stockholders of the Company, can
      evaluate such initiatives with the benefit of full disclosure
      of information and in an orderly manner.

                Under the Rights Plan, each right initially will
      entitle stockholders to buy one unit of a share of preferred
      stock for $250.  The rights will be exercisable only if a
      person or group (other than stockholders currently owning 15
      percent of the Company's common stock) acquires beneficial
      ownership of 15 percent or more of the Company's common stock
      or commences a tender or exchange offer upon consummation of
      which such person or group would beneficially own 15 percent
      or more of the Company's common stock.

                If any person becomes the beneficial owner of 15
      percent or more of the Company's common stock, other than
      pursuant to a tender or exchange offer for all outstanding
      shares of the Company approved by a majority of the
      independent directors not affiliated with such person, then
      each right not owned by such person or related parties will
      entitle its holder to purchase, at the right's then current
      exercise price, shares of the Company's common stock (or, in
      certain circumstances as determined by the Board, cash, other
      property or other securities) having a value of twice the
      right's then current exercise price.  In addition, if after
      any person has become a 15 percent stockholder, the Company
      is involved in a merger or other business combination
      transaction with another person in which the Company does not
      survive or in which its common stock is changed or exchanged,
      or if the Company sells 50 percent or more of its assets or
      earning power to another person, each right will entitle its
      holder to purchase, at the right's then current exercise
      price, shares of common stock of such other person having a
      value of twice the right's then current exercise price.

                The Company will generally be entitled to redeem
      the Rights at $.001 per Right at any time until 10 business
      days (subject to extension) following a public announcement
      that a 15 percent position has been acquired.

                Details of the Shareholder Rights Plan are outlined
      in a letter to be mailed to all stockholders of the Company.

                Safe Harbor Statement Under the Private Securities
      Litigation Act of 1995:  This press release contains certain
      forward-looking statements, including those relating to
      distribution of dividends and operation of the Shareholder
      Rights Plan, that are subject to various risks and
      uncertainties that could cause results to differ materially. 
      These risks include the risk that future action or inaction
      by the Board with respect to the Shareholder Rights Plan,
      including any future decision relating to redemption of the
      Rights or amendment of the terms of the Rights, could become
      the subject of litigation and other risks detailed from time
      to time in the Company's SEC reports, including the report on
      Form 10-Q for the quarter ended September 30, 1996.  The
      Company assumes no obligation to update the information in
      this release.

                Lam Research Corporation is a leading supplier of
      wafer processing equipment to the worldwide semiconductor
      industry.  The Company's broad product offerings are focused
      on etch and deposition, two of the most vital steps in the
      fabrication of current and future integrated circuits. 
      Founded in 1980, Lam is headquartered in Fremont and
      maintains customer support centers throughout the United
      States, Europe, Japan and the Asia/Pacific region to support
      its global customer base.  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.