Inventor · disambiguated record
Tadashi Kaji
Also filed as: KAJI TADASHI
22 granted patents·27 pending applications·176 citations·filing 1998–2020
95Inventor score
Top patents by PatentIndex Score
49 records- 0185US7697692B2Cryptographic communication system and methodHITACHI LTD·Filed 2006·Granted Apr 13, 2010·19 cites·9 claims
- 0285US7657035B2Encryption communication method and systemHITACHI LTD·Filed 2006·Granted Feb 2, 2010·16 cites·15 claims
- 0385US7533269B2Digital-signed digital document exchange supporting method and information processorHITACHI LTD·Filed 2005·Granted May 12, 2009·16 cites·9 claims
- 0484US8010793B2Data communication method and systemHITACHI LTD·Filed 2005·Granted Aug 30, 2011·13 cites·21 claims
- 0582US8019996B2Method for encrypted communication with a computer system and system thereforHITACHI LTD·Filed 2007·Granted Sep 13, 2011·11 cites·8 claims
- 0676US7720227B2Encryption method for SIP message and encrypted SIP communication systemHITACHI LTD·Filed 2006·Granted May 18, 2010·7 cites·13 claims
- 0773US8218769B2Encrypted communication system, communication status management server, encrypted communication method, and communication status management methodTAKATA OSAMU·Filed 2007·Granted Jul 10, 2012·6 cites·12 claims
- 0872US8205074B2Data communication method and data communication systemHOSHINO KAZUYOSHI·Filed 2006·Granted Jun 19, 2012·6 cites·13 claims
- 0971US9372995B2Vulnerability countermeasure device and vulnerability countermeasure methodSHIGEMOTO TOMOHIRO·Filed 2011·Granted Jun 21, 2016·7 cites·18 claims
- 1068US7984290B2System and method for encrypted communicationHITACHI LTD·Filed 2006·Granted Jul 19, 2011·4 cites·13 claims
- 1167US8094337B2Device and system for assisting printer selection through a networkHASHIMOTO YOKO·Filed 2007·Granted Jan 10, 2012·5 cites·16 claims
- 1267US8041822B2Service network system and server deviceHITACHI LTD·Filed 2006·Granted Oct 18, 2011·3 cites·4 claims
- 1366US7443986B2Key allocating method and key allocation system for encrypted communicationHITACHI LTD·Filed 2004·Granted Oct 28, 2008·9 cites·11 claims
- 1463US7940780B2Data communication system enabling data communication between communication devices through a serverHITACHI LTD·Filed 2008·Granted May 10, 2011·4 cites·7 claims
- 1559US8081758B2Communication support server, communication support method, and communication support systemTAKATA OSAMU·Filed 2005·Granted Dec 20, 2011·2 cites·8 claims
- 1658US7558952B2Method and apparatus for accelerating public-key certificate validationHITACHI LTD·Filed 2004·Granted Jul 7, 2009·5 cites·14 claims
- 1755US7392380B2Authentication and authorization infrastructure system with CRL issuance notification functionHITACHI LTD·Filed 2003·Granted Jun 24, 2008·5 cites·7 claims
- 1854US6327658B1Distributed object system and service supply method thereinHITACHI LTD·Filed 1998·Granted Dec 4, 2001·36 cites·10 claims
- 1953US8516245B2Method, product and apparatus for accelerating public-key certificate validationKUMAGAI YOKO·Filed 2009·Granted Aug 20, 2013·1 cites·8 claims
- 2052US8238555B2Management server, communication apparatus and program implementing key allocation system for encrypted communicationTAKATA OSAMU·Filed 2008·Granted Aug 7, 2012·0 cites·32 claims
- 2152US8095676B2Mediating system and method to establish communication session, allowing private information to be protectedKAJI TADASHI·Filed 2006·Granted Jan 10, 2012·1 cites·9 claims
- 2251US2009177802A1Service network system and server deviceHOSHINO KAZUYOSHI·Filed 2009·Application pending·0 cites
- 2351US2002138322A1Secure workflow system and method for the sameFiled 2001·Application pending·0 cites
- 2447US2009113203A1Network SystemHITACHI LTD·Filed 2008·Application pending·0 cites
- 2546US2012084351A1Service collaboration systemYATO AKIFUMI·Filed 2011·Application pending·0 cites
- 2646US2006224717A1Management system for warranting consistency between inter-client communication logsSAWAI YUKO·Filed 2006·Application pending·0 cites
- 2745US2008082650A1Inter-client communication log management systemHITACHI LTD·Filed 2007·Application pending·0 cites
- 2844US2008219445A1Communications audit support systemYATO AKIFUMI·Filed 2007·Application pending·0 cites
- 2944US2022382711A1Data analysis system and data analysis methodHITACHI LTD·Filed 2020·Application pending·0 cites
- 3044US2010312887A1Management system for warranting consistency between inter-client communication logsSAWAI YUKO·Filed 2010·Application pending·0 cites
- 3144US2010017527A1Sip server and communication systemKINOSHITA MASAFUMI·Filed 2009·Application pending·0 cites
- 3243US2004255116A1Electronic document management system with the use of signature technique capable of maskingFiled 2003·Application pending·0 cites
- 3342US2010138899A1Authentication intermediary server, program, authentication system and selection methodHITACHI LTD·Filed 2009·Application pending·0 cites
- 3441US2013227690A1Program analysis system and method thereofHITACHI LTD·Filed 2013·Application pending·0 cites
- 3541US2003084294A1System and method for authenticationFiled 2002·Application pending·0 cites
- 3641US2013124924A1Program analyzing system and methodHITACHI LTD·Filed 2012·Application pending·0 cites
- 3740US2008256224A1Data communication system and session management serverKAJI TADASHI·Filed 2008·Application pending·0 cites
- 3840US2009249454A1Authentication server, authentication system, and authentication methodHITACHI LTD·Filed 2009·Application pending·0 cites
- 3939US2007288754A1Data communication method and systemKAJI TADASHI·Filed 2007·Application pending·0 cites
- 4038US2009089866A1Access authorization system, access control server, and business process execution systemYATO AKIFUMI·Filed 2008·Application pending·0 cites
- 4138US2012254942A1Connection destination determination device, connection destination determination method, and service collaboration systemHAYASHI NAOKI·Filed 2012·Application pending·0 cites
- 4237US2009327394A1Information providing server, program, information providing method, and information providing systemKAJI TADASHI·Filed 2009·Application pending·0 cites
- 4334US8402524B2ID bridge service system and method thereofKAJI TADASHI·Filed 2011·Granted Mar 19, 2013·0 cites·6 claims
- 4434US2012254935A1Authentication collaboration system and authentication collaboration methodYATO AKIFUMI·Filed 2012·Application pending·0 cites
- 4534US2015302213A1System security design support device, and system security design support methodHITACHI LTD·Filed 2015·Application pending·0 cites
- 4631US2013333045A1Security level visualization deviceSHIGEMOTO TOMOHIRO·Filed 2011·Application pending·0 cites
- 4731US2012005362A1Streaming data delivery system and method thereofHAYASHI NAOKI·Filed 2011·Application pending·0 cites
- 4830US2012198039A1Service linkage device, program, service linkage method, and service provision systemHAYASHI NAOKI·Filed 2010·Application pending·0 cites
- 4929US2012210125A1Encrypted traffic test systemSHIGEMOTO TOMOHIRO·Filed 2012·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →