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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 Lga5tD3U4Zy8oGuCs4s0ikvDE1oqlK04XZc3bUnQJNp7kD4UmFeo1Hec6qUJJnFm
 DgM5CqokLeDp7kQv7JICJA==

<SEC-DOCUMENT>0000319200-06-000001.txt : 20060110
<SEC-HEADER>0000319200-06-000001.hdr.sgml : 20060110
<ACCEPTANCE-DATETIME>20060110211420
ACCESSION NUMBER:		0000319200-06-000001
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20060110
FILED AS OF DATE:		20060110
DATE AS OF CHANGE:		20060110

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			REGENT TECHNOLOGIES INC
		CENTRAL INDEX KEY:			0000319200
		STANDARD INDUSTRIAL CLASSIFICATION:	HEAVY CONSTRUCTION OTHER THAN BUILDING CONST - CONTRACTORS [1600]
		IRS NUMBER:				840807913
		STATE OF INCORPORATION:			CO
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		6727 HILLCREST AVENUE
		STREET 2:		SUITE E
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75205
		BUSINESS PHONE:		2145079507

	MAIL ADDRESS:	
		STREET 1:		6727 HILLCREST AVENUE
		STREET 2:		SUITE E
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75205

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	REGENT PETROLEUM CORP
		DATE OF NAME CHANGE:	19920703

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			REGENT TECHNOLOGIES INC
		CENTRAL INDEX KEY:			0000319200
		STANDARD INDUSTRIAL CLASSIFICATION:	HEAVY CONSTRUCTION OTHER THAN BUILDING CONST - CONTRACTORS [1600]
		STATE OF INCORPORATION:			CO
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13621
		FILM NUMBER:		06523504

	BUSINESS ADDRESS:	
		STREET 1:		6727 HILLCREST AVENUE
		STREET 2:		SUITE E
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75205
		BUSINESS PHONE:		2145079507

	MAIL ADDRESS:	
		STREET 1:		6727 HILLCREST AVENUE
		STREET 2:		SUITE E
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75205

	FORMER NAME:	
		FORMER CONFORMED NAME:	REGENT PETROLEUM CORP
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2006-01-10</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000319200</issuerCik>
        <issuerName>REGENT TECHNOLOGIES INC</issuerName>
        <issuerTradingSymbol>regt</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000319200</rptOwnerCik>
            <rptOwnerName>REGENT TECHNOLOGIES INC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>6727 HILLCREST AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE E</rptOwnerStreet2>
            <rptOwnerCity>DALLAS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75205</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2006-01-10</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>900000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.001</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1844960</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Acquired in foreclosure sale on April 24, 2002; deemed incontestable effective January 1, 2006.</footnote>
        <footnote id="F2">Includes 87,502 shares owned by Reporting Person's spouse.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>David A. Nelson</signatureName>
        <signatureDate>2006-01-10</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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