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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 BT5q/KNW68Puv0dUfD1ILzZrvuBIwJTCxoEgMklaxP4cBQcU+Kn6IIAKj2GoTi2s
 ln2sKcWp34SllMLdGugECw==

<SEC-DOCUMENT>0000909791-03-000045.txt : 20030808
<SEC-HEADER>0000909791-03-000045.hdr.sgml : 20030808
<ACCEPTANCE-DATETIME>20030808175243
ACCESSION NUMBER:		0000909791-03-000045
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030721
FILED AS OF DATE:		20030808

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SMITH ERIK C
		CENTRAL INDEX KEY:			0001227981

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-22248
		FILM NUMBER:		03832794

	BUSINESS ADDRESS:	
		STREET 1:		ULRATECH STEPPER
		STREET 2:		3050 ZANKER ROAD
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95134

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ULTRATECH INC
		CENTRAL INDEX KEY:			0000909791
		STANDARD INDUSTRIAL CLASSIFICATION:	SPECIAL INDUSTRY MACHINERY, NEC [3559]
		IRS NUMBER:				943169580
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		3050 ZANKER RD
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95134
		BUSINESS PHONE:		4083218835

	MAIL ADDRESS:	
		STREET 1:		3050 ZANKER RD
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95134

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ULTRATECH STEPPER INC
		DATE OF NAME CHANGE:	19930727
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4/A</documentType><periodOfReport>2003-07-21</periodOfReport><dateOfOriginalSubmission>2003-07-23</dateOfOriginalSubmission>
    <issuer>
        <issuerCik>0000909791</issuerCik>
        <issuerName>ULTRATECH INC</issuerName>
        <issuerTradingSymbol>UTEK</issuerTradingSymbol></issuer><reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001227981</rptOwnerCik>
            <rptOwnerName>SMITH ERIK C</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ULTRATECH, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>3050 ZANKER ROAD</rptOwnerStreet2>
            <rptOwnerCity>SAN JOSE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>95134</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
<isDirector>0</isDirector><isOfficer>1</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther><officerTitle>Sr. VP - Worldwide Sales</officerTitle></reportingOwnerRelationship></reportingOwner><derivativeTable><derivativeTransaction><securityTitle><value>Employee Stock Option (Right to Buy)</value></securityTitle><conversionOrExercisePrice><value>21.83</value></conversionOrExercisePrice><transactionDate><value>2003-07-21</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>60000</value></transactionShares><transactionPricePerShare><value>0</value><footnoteId id="F2"/></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2004-07-21</value><footnoteId id="F1"/></exerciseDate><expirationDate><value>2013-07-20</value><footno
teId id="F3"/></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>60000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>60000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeTransaction></derivativeTable><footnotes><footnote id="F1">Options become exercisable in a series of successive installments over Reporting Person's continued period of service - Fifty percent (50%) of such option shares become exercisable as follows:  Twenty-four percent (24%) of such shares become exercisable upon completion of twelve (12) month of service measured from the date of grant, and balance becomes exercisable in a series of thirty-eight (38) monthly installments over Reporting Pers
on's continued period of service following initial vesting date.  Fifty percent (50%) of such option shares become exercisable as follows: Twenty-four percent (24%) of such shares become exercisable upon completion of twenty-four (24) months of service measured from the date of grant, and balance becomes exercisable in a series of thirty-eight (38) monthly installments over Reporting Person's continued period of service thereafter.</footnote><footnote id="F2">The Option was granted in an exempt transaction pursuant to SEC Rule 16b-3(d).</footnote><footnote id="F3">Amended to show correct Expiration Date.</footnote></footnotes><remarks/><ownerSignature><signatureName>Bruce R. Wright, Attorney-in-Fact</signatureName><signatureDate>2003-08-08</signatureDate></ownerSignature></ownershipDocument>

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