    <SEC-DOCUMENT>0001193125-16-427923-index.html : 20160112
    <SEC-HEADER>0001193125-16-427923.hdr.sgml : 20160112
    <ACCEPTANCE-DATETIME>20160112161006
    ACCESSION NUMBER:		0001193125-16-427923
    CONFORMED SUBMISSION TYPE:	S-4/A
    PUBLIC DOCUMENT COUNT:		17
    FILED AS OF DATE:		20160112
    DATE AS OF CHANGE:		20160112

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			LAM RESEARCH CORP
    		CENTRAL INDEX KEY:			0000707549
    		STANDARD INDUSTRIAL CLASSIFICATION:	SPECIAL INDUSTRY MACHINERY, NEC [3559]
    		IRS NUMBER:				942634797
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			0630

    	FILING VALUES:
    		FORM TYPE:		S-4/A
    		SEC ACT:		1933 Act
    		SEC FILE NUMBER:	333-208356
    		FILM NUMBER:		161338894

    	BUSINESS ADDRESS:
    		STREET 1:		4650 CUSHING BLVD
    		CITY:			FREMONT
    		STATE:			CA
    		ZIP:			94538
    		BUSINESS PHONE:		5106590200

    	MAIL ADDRESS:
    		STREET 1:		4650 CUSHING PARKWAY
    		CITY:			FREMONT
    		STATE:			CA
    		ZIP:			94538
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>S-4/A
    <SEQUENCE>1
    <FILENAME>d19534ds4a.htm
    <DESCRIPTION>AMENDMENT NO. 1 TO FORM S-4
    <TEXT>
    Document 1 - file: d19534ds4a.htm

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    <TYPE>EX-5.1
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    <FILENAME>d19534dex51.htm
    <DESCRIPTION>EX-5.1
    <TEXT>
    Document 2 - file: d19534dex51.htm

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    <TYPE>EX-8.1
    <SEQUENCE>3
    <FILENAME>d19534dex81.htm
    <DESCRIPTION>EX-8.1
    <TEXT>
    Document 3 - file: d19534dex81.htm

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    <TYPE>EX-8.2
    <SEQUENCE>4
    <FILENAME>d19534dex82.htm
    <DESCRIPTION>EX-8.2
    <TEXT>
    Document 4 - file: d19534dex82.htm

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    <DOCUMENT>
    <TYPE>EX-23.4
    <SEQUENCE>5
    <FILENAME>d19534dex234.htm
    <DESCRIPTION>EX-23.4
    <TEXT>
    Document 5 - file: d19534dex234.htm

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    <SEQUENCE>6
    <FILENAME>d19534dex235.htm
    <DESCRIPTION>EX-23.5
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    Document 6 - file: d19534dex235.htm

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    <DESCRIPTION>EX-99.1
    <TEXT>
    Document 7 - file: d19534dex991.htm

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    <SEQUENCE>8
    <FILENAME>d19534dex992.htm
    <DESCRIPTION>EX-99.2
    <TEXT>
    Document 8 - file: d19534dex992.htm

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    <TYPE>EX-99.3
    <SEQUENCE>9
    <FILENAME>d19534dex993.htm
    <DESCRIPTION>EX-99.3
    <TEXT>
    Document 9 - file: d19534dex993.htm

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    <SEQUENCE>10
    <FILENAME>d19534dex994.htm
    <DESCRIPTION>EX-99.4
    <TEXT>
    Document 10 - file: d19534dex994.htm

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    <FILENAME>g19534g03u87.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: g19534g03u87.jpg

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    <FILENAME>g19534g17k56.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 12 - file: g19534g17k56.jpg

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    <SEQUENCE>13
    <FILENAME>g19534g22k56.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 13 - file: g19534g22k56.jpg

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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 14 - file: g19534g33a41.jpg

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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 15 - file: g19534g50h07.jpg

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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 16 - file: g19534g53d50.jpg

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    <SEQUENCE>17
    <FILENAME>g19534g87e26.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 17 - file: g19534g87e26.jpg

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