Inventor · disambiguated record
Zulfikar Ramzan
Also filed as: RAMZAN ZULFIKAR · RAMZAN ZULFIKAR A · RAMZAN ZULFIKAR AMIN
72 granted patents·9 pending applications·1,737 citations·filing 1998–2019
99Inventor score
Top patents by PatentIndex Score
81 records- 0199US8850570B1Filter-based identification of malicious websitesRAMZAN ZULFIKAR·Filed 2008·Granted Sep 30, 2014·290 cites·16 claims
- 0299US8401982B1Using sequencing and timing information of behavior events in machine learning to detect malwareSATISH SOURABH·Filed 2010·Granted Mar 19, 2013·182 cites·19 claims
- 0398US8024562B2Revocation of cryptographic digital certificatesNTT DOCOMO INC·Filed 2009·Granted Sep 20, 2011·110 cites·17 claims
- 0497US9639697B2Method and apparatus for retroactively detecting malicious or otherwise undesirable softwareCISCO TECH INC·Filed 2015·Granted May 2, 2017·38 cites·16 claims
- 0597US8312272B1Secure authentication token managementSERENYI DENIS·Filed 2009·Granted Nov 13, 2012·98 cites·16 claims
- 0696US8103875B1Detecting email fraud through fingerprintingRAMZAN ZULFIKAR·Filed 2007·Granted Jan 24, 2012·58 cites·20 claims
- 0795US9245120B2Method and apparatus for retroactively detecting malicious or otherwise undesirable software as well as clean software through intelligent rescanningCISCO TECH INC·Filed 2013·Granted Jan 26, 2016·25 cites·20 claims
- 0895US7975308B1Method and apparatus to secure user confidential data from untrusted browser extensionsSYMANTEC CORP·Filed 2007·Granted Jul 5, 2011·44 cites·16 claims
- 0994US8621233B1Malware detection using file namesMANADHATA PRATYUSA K·Filed 2010·Granted Dec 31, 2013·47 cites·17 claims
- 1094US8412952B1Systems and methods for authenticating requests from a client running trialware through a proof of work protocolRAMZAN ZULFIKAR·Filed 2009·Granted Apr 2, 2013·48 cites·18 claims
- 1193US8869269B1Method and apparatus for identifying domain name abuseRAMZAN ZULFIKAR·Filed 2008·Granted Oct 21, 2014·29 cites·20 claims
- 1293US8707426B1Method and apparatus for resolving a cousin domain name to detect web-based fraudRAMZAN ZULFIKAR·Filed 2008·Granted Apr 22, 2014·33 cites·18 claims
- 1393US8190647B1Decision tree induction that is sensitive to attribute computational complexityPEREIRA SHANE·Filed 2009·Granted May 29, 2012·33 cites·20 claims
- 1493US7315941B2Multi-certificate revocation using encrypted proof data for proving certificate's validity or invalidityNTT DOCOMO INC·Filed 2005·Granted Jan 1, 2008·36 cites·47 claims
- 1592US8856937B1Methods and systems for identifying fraudulent websitesWÜEST CANDID·Filed 2008·Granted Oct 7, 2014·74 cites·18 claims
- 1692US8572007B1Systems and methods for classifying unknown files/spam based on a user actions, a file's prevalence within a user community, and a predetermined prevalence thresholdMANADHATA PRATYUSA·Filed 2010·Granted Oct 29, 2013·34 cites·20 claims
- 1792US8266698B1Using machine infection characteristics for behavior-based detection of malwareSESHARDI VIJAY·Filed 2009·Granted Sep 11, 2012·131 cites·15 claims
- 1892US7730319B2Provisional signature schemesNTT DOCOMO INC·Filed 2005·Granted Jun 1, 2010·21 cites·7 claims
- 1991US9747445B2Method and apparatus for retroactively detecting malicious or otherwise undesirable software as well as clean software through intelligent rescanningCISCO TECH INC·Filed 2015·Granted Aug 29, 2017·7 cites·20 claims
- 2091US7814314B2Revocation of cryptographic digital certificatesNTT DOCOMO INC·Filed 2005·Granted Oct 12, 2010·17 cites·19 claims
- 2190US9081958B2Using confidence about user intent in a reputation systemRAMZAN ZULFIKAR·Filed 2009·Granted Jul 14, 2015·21 cites·17 claims
- 2290US7620606B2Method and apparatus for secure and small credits for verifiable service provider meteringNTT DOCOMO INC·Filed 2004·Granted Nov 17, 2009·57 cites·22 claims
- 2389US8434149B1Method and apparatus for identifying web attacksSATISH SOURABH·Filed 2007·Granted Apr 30, 2013·18 cites·18 claims
- 2488US9071598B2Cryptographic authentication and/or establishment of shared cryptographic keys, including, but not limited to, password authenticated key exchange (PAKE)RAMZAN ZULFIKAR AMIN·Filed 2010·Granted Jun 30, 2015·12 cites·32 claims
- 2588US7783579B2Method and apparatus for secure and small credits for verifiable service provider meteringNTT DOCOMO INC·Filed 2009·Granted Aug 24, 2010·14 cites·14 claims
- 2686US9038186B1Malware detection using file namesSYMANTEC CORP·Filed 2013·Granted May 19, 2015·7 cites·20 claims
- 2786US8495096B1Decision tree induction that is sensitive to attribute computational complexityPEREIRA SHANE·Filed 2012·Granted Jul 23, 2013·8 cites·20 claims
- 2886US7747857B2Use of modular roots to perform authentication including, but not limited to, authentication of validity of digital certificatesNTT DOCOMO INC·Filed 2006·Granted Jun 29, 2010·10 cites·8 claims
- 2985US7664957B2Digital signatures including identity-based aggregate signaturesNTT DOCOMO INC·Filed 2005·Granted Feb 16, 2010·13 cites·91 claims
- 3084US9465921B1Systems and methods for selectively authenticating queries based on an authentication policyRAMZAN ZULFIKAR·Filed 2009·Granted Oct 11, 2016·13 cites·19 claims
- 3184US8209531B2Revocation of cryptographic digital certificatesGENTRY CRAIG B·Filed 2009·Granted Jun 26, 2012·7 cites·28 claims
- 3284US8095679B1Predictive transmission of content for application streaming and network file systemsSATISH SOURABH·Filed 2008·Granted Jan 10, 2012·13 cites·12 claims
- 3384US7266692B2Use of modular roots to perform authentication including, but not limited to, authentication of validity of digital certificatesNTT DOCOMO INC·Filed 2005·Granted Sep 4, 2007·8 cites·70 claims
- 3483US8978137B2Method and apparatus for retroactively detecting malicious or otherwise undesirable softwareCISCO TECH INC·Filed 2013·Granted Mar 10, 2015·6 cites·20 claims
- 3583US7987201B2Method and apparatus for communication efficient private information retrieval and oblivious transferNTT DOCOMO INC·Filed 2009·Granted Jul 26, 2011·10 cites·5 claims
- 3682US8824677B1Provably secure and efficient pseudorandom number generationRAMZAN ZULFIKAR·Filed 2009·Granted Sep 2, 2014·10 cites·20 claims
- 3782US7814320B2Cryptographic authentication, and/or establishment of shared cryptographic keys, using a signing key encrypted with a non-one-time-pad encryption, including (but not limited to) techniques with improved security against malleability attacksNTT DOCOMO INC·Filed 2006·Granted Oct 12, 2010·11 cites·33 claims
- 3882US7221756B2Constructions of variable input length cryptographic primitives for high efficiency and high securityLUCENT TECHNOLOGIES INC·Filed 2002·Granted May 22, 2007·35 cites·33 claims
- 3981US10437997B2Method and apparatus for retroactively detecting malicious or otherwise undesirable software as well as clean software through intelligent rescanningCISCO TECH INC·Filed 2017·Granted Oct 8, 2019·2 cites·20 claims
- 4081US7743252B2Use of modular roots to perform authentication including, but not limited to, authentication of validity of digital certificatesNTT DOCOMO INC·Filed 2006·Granted Jun 22, 2010·6 cites·9 claims
- 4180US8977764B1Profiling application usage from application streamingRAMZAN ZULFIKAR·Filed 2008·Granted Mar 10, 2015·9 cites·20 claims
- 4280US8132006B2Cryptographic authentication and/or establishment of shared cryptographic keys, including, but not limited to, password authenticated key exchange (PAKE)RAMZAN ZULFIKAR AMIN·Filed 2006·Granted Mar 6, 2012·9 cites·75 claims
- 4376US11128638B2Location assurance using location indicators modified by shared secretsRSA SECURITY LLC·Filed 2019·Granted Sep 21, 2021·2 cites·19 claims
- 4476US8256015B2Method and apparatus for authentication of data streams with adaptively controlled lossesGENTRY CRAIG B·Filed 2009·Granted Aug 28, 2012·6 cites·45 claims
- 4575US8006086B2Revocation of cryptographic digital certificatesNTT DOCOMO INC·Filed 2009·Granted Aug 23, 2011·3 cites·21 claims
- 4675US7818570B2Exclusive set system constructions including, but not limited to, applications to broadcast encryption and certificate revocationNTT DOCOMO INC·Filed 2006·Granted Oct 19, 2010·6 cites·59 claims
- 4774US11139982B2Communication-efficient device delegationRSA SECURITY LLC·Filed 2019·Granted Oct 5, 2021·2 cites·20 claims
- 4874US7941422B2Method and apparatus for communication efficient private information retrieval and oblivious transferNTT DOCOMO INC·Filed 2009·Granted May 10, 2011·4 cites·9 claims
- 4973US11171995B2Identifying and mitigating risks of cryptographic obsolescenceEMC IP HOLDING CO LLC·Filed 2019·Granted Nov 9, 2021·2 cites·20 claims
- 5073US7620625B2Method and apparatus for communication efficient private information retrieval and oblivious transferNTT DOCOMO INC·Filed 2005·Granted Nov 17, 2009·10 cites·14 claims
Showing the top 50 of 81 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →