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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 MT5G6jgJBHUxSzW2q5xh/s74Rp63fp4cjkCf3spm65+bOb5xEofQHS3pHsYAjFI0
 lBM2Y7asIOUdRAX0Z5K8kQ==

<SEC-DOCUMENT>0001167966-03-000345.txt : 20030813
<SEC-HEADER>0001167966-03-000345.hdr.sgml : 20030813
<ACCEPTANCE-DATETIME>20030813170639
ACCESSION NUMBER:		0001167966-03-000345
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030811
FILED AS OF DATE:		20030813

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			YANIV ZVI
		CENTRAL INDEX KEY:			0001022731

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-11602
		FILM NUMBER:		03842264

	BUSINESS ADDRESS:	
		STREET 1:		12100 TECHNOLOGY BLVD
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78727

	MAIL ADDRESS:	
		STREET 1:		12100 TECHNOLOGY BLVD
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78727

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NANO PROPRIETARY  INC
		CENTRAL INDEX KEY:			0000891417
		STANDARD INDUSTRIAL CLASSIFICATION:	COMMUNICATIONS EQUIPMENT, NEC [3669]
		IRS NUMBER:				760273345
		STATE OF INCORPORATION:			TX
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		3006 LONGHORN BOULEVARD
		STREET 2:		SUITE 107
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78758
		BUSINESS PHONE:		5123315020

	MAIL ADDRESS:	
		STREET 1:		12100 TECHNOLOGY BOULEVARD
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78727

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SI DIAMOND TECHNOLOGY INC
		DATE OF NAME CHANGE:	19940318
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType><periodOfReport>2003-08-11</periodOfReport>
    <issuer>
        <issuerCik>0000891417</issuerCik>
        <issuerName>NANO PROPRIETARY  INC</issuerName>
        <issuerTradingSymbol>NNPP</issuerTradingSymbol></issuer><reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001022731</rptOwnerCik>
            <rptOwnerName>YANIV ZVI</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>3006 LONGHORN BLVD., SUITE 107</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>AUSTIN</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>78758</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
<isDirector>1</isDirector><isOfficer>1</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther><officerTitle>Pres., Chief Operating Officer</officerTitle></reportingOwnerRelationship></reportingOwner><nonDerivativeTable><nonDerivativeHolding><securityTitle><value>Common Stock</value></securityTitle><postTransactionAmounts><sharesOwnedFollowingTransaction><value>36000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></nonDerivativeHolding></nonDerivativeTable><derivativeTable><derivativeTransaction><securityTitle><value>Stock Option  (Right to Buy)</value></securityTitle><conversionOrExercisePrice><value>.375</value></conversionOrExercisePrice><transactionDate><value>2003-08-11</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>G</transactionCode><equitySwapInvolved>0</equit
ySwapInvolved><footnoteId id="F1"/></transactionCoding><transactionAmounts><transactionShares><value>50000</value></transactionShares><transactionPricePerShare><value>0</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>1998-07-28</value></exerciseDate><expirationDate><value>2008-07-27</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>50000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>1430000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeTransaction></derivativeTable><footnotes><footnote id="F1">Gift by Dr. Yaniv to an adjult child.</footnote></
footnotes><remarks/><ownerSignature><signatureName>Donald T. Locke, as Attorney-in-Fact</signatureName><signatureDate>2003-08-12</signatureDate></ownerSignature></ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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