-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0001104659-10-054028.txt : 20101027
<SEC-HEADER>0001104659-10-054028.hdr.sgml : 20101027
<ACCEPTANCE-DATETIME>20101027165037
ACCESSION NUMBER:		0001104659-10-054028
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20101008
FILED AS OF DATE:		20101027
DATE AS OF CHANGE:		20101027

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Cogent, Inc.
		CENTRAL INDEX KEY:			0001289434
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER INTEGRATED SYSTEMS DESIGN [7373]
		IRS NUMBER:				954305768
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		639 NORTH ROSEMEAD BLVD
		STREET 2:		BUILDING 1
		CITY:			PASADENA
		STATE:			CA
		ZIP:			91107
		BUSINESS PHONE:		626-325-9600

	MAIL ADDRESS:	
		STREET 1:		639 NORTH ROSEMEAD BLVD
		STREET 2:		BUILDING 1
		CITY:			PASADENA
		STATE:			CA
		ZIP:			91107

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Cogent Systems, INC
		DATE OF NAME CHANGE:	20040505

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			3M CO
		CENTRAL INDEX KEY:			0000066740
		STANDARD INDUSTRIAL CLASSIFICATION:	SURGICAL & MEDICAL INSTRUMENTS & APPARATUS [3841]
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-50947
		FILM NUMBER:		101145354

	BUSINESS ADDRESS:	
		STREET 1:		3M CENTER
		STREET 2:		BLDG. 220-11W-02
		CITY:			ST PAUL
		STATE:			MN
		ZIP:			55144-1000
		BUSINESS PHONE:		6517332204

	MAIL ADDRESS:	
		STREET 1:		3M CENTER
		STREET 2:		BLDG. 220-11W-02
		CITY:			ST. PAUL
		STATE:			MN
		ZIP:			55144-1000

	FORMER NAME:	
		FORMER CONFORMED NAME:	MINNESOTA MINING & MANUFACTURING CO
		DATE OF NAME CHANGE:	19920703

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Ventura Acquisition Corp
		CENTRAL INDEX KEY:			0001504415

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-50947
		FILM NUMBER:		101145355

	BUSINESS ADDRESS:	
		STREET 1:		3M CENTER
		CITY:			ST. PAUL
		STATE:			MN
		ZIP:			15444
		BUSINESS PHONE:		(651) 733-2204

	MAIL ADDRESS:	
		STREET 1:		3M CENTER
		CITY:			ST. PAUL
		STATE:			MN
		ZIP:			15444
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>a3.xml
<DESCRIPTION>3
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0203</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2010-10-08</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001289434</issuerCik>
        <issuerName>Cogent, Inc.</issuerName>
        <issuerTradingSymbol>COGT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000066740</rptOwnerCik>
            <rptOwnerName>3M CO</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>3M CENTER</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>ST. PAUL</rptOwnerCity>
            <rptOwnerState>MN</rptOwnerState>
            <rptOwnerZipCode>55144-1000</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001504415</rptOwnerCik>
            <rptOwnerName>Ventura Acquisition Corp</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>3M CENTER</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>ST. PAUL</rptOwnerCity>
            <rptOwnerState>MN</rptOwnerState>
            <rptOwnerZipCode>55144-1000</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>64921969</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Explanation of Responses</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                    <footnoteId id="F4"/>
                    <footnoteId id="F5"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">This statement is being filed by 3M Company (&quot;3M&quot;) and Ventura Acquisition Corporation (&quot;Purchaser&quot; and, together with 3M, the &quot;Reporting Persons&quot;).  Purchaser is a wholly-owned subsidiary of 3M.</footnote>
        <footnote id="F2">As of October 26, 2010, Purchaser beneficially owned directly, and 3M may be deemed to have beneficially owned indirectly, an aggregate of 64,921,969 shares of common stock, par value $0.001 per share (the &quot;Shares&quot;) of Cogent, Inc. (the &quot;Issuer&quot;).</footnote>
        <footnote id="F3">As disclosed in the Schedule TO filed with the Securities and Exchange Commission by 3M on September 10, 2010, as amended and supplemented, 3M, Purchaser and the Issuer entered into an Agreement and Plan of Merger dated August 29, 2010 (the &quot;Merger Agreement&quot;).  Pursuant to the Merger Agreement, 3M and Purchaser commenced a tender offer to purchase all of the outstanding Shares at a purchase price of $10.50 per Share on September 10, 2010 (the &quot;Initial Offering Period&quot;).  The Initial Offering Period expired at 12:00 midnight, New York City time, on Thursday, October 7, 2010. (Continued in Footnote 4)</footnote>
        <footnote id="F4">On October 8, 2010, 3M and Purchaser commenced a subsequent offering period for all remaining untendered Shares (the &quot;Subsequent Offering Period&quot;).  The Subsequent Offering Period was scheduled to expire at 12:00 midnight, New York City time, on Friday, October 22, 2010.  On October 25, 2010, 3M and Purchaser extended the Subsequent Offering Period for all remaining untendered Shares.  The extended Subsequent Offering Period expired at 5:00 p.m., New York City time, on Tuesday, October 26, 2010.</footnote>
        <footnote id="F5">Pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, as amended (the &quot;Exchange Act&quot;), this filing shall not be deemed an admission that the Reporting Persons are, for purposes of Section 16 of the Exchange Act or otherwise, the beneficial owners of any shares in excess of such amounts.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>3M COMPANY by Gregg M. Larson, Deputy General Counsel and Secretary</signatureName>
        <signatureDate>2010-10-26</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>VENTURA ACQUISITION CORPORATION by Michael P. Delkoski, President and Director</signatureName>
        <signatureDate>2010-10-26</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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