Inventor
FUJISHIRO TAKAHIRO
JP38 patents
⚠️ This page may combine multiple inventors who share the name “FUJISHIRO TAKAHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
22 patentsUS7080251B2Jul 18, 2006
Certificate validity authentication method and apparatus
HITACHI LTD24 citations90
US8010793B2Aug 30, 2011
Data communication method and system
HITACHI LTD13 citations84
US7697692B2Apr 13, 2010
Cryptographic communication system and method
HITACHI LTD19 citations84
US7443986B2Oct 28, 2008
Key allocating method and key allocation system for encrypted communication
HITACHI LTD9 citations84
US8019996B2Sep 13, 2011
Method for encrypted communication with a computer system and system therefor
HITACHI LTD11 citations83
US7657035B2Feb 2, 2010
Encryption communication method and system
HITACHI LTD16 citations83
US7533269B2May 12, 2009
Digital-signed digital document exchange supporting method and information processor
HITACHI LTD16 citations83
US7409551B2Aug 5, 2008
Certificate validity authentication method and apparatus
HITACHI LTD13 citations82
US8347082B2Jan 1, 2013
Method of validation public key certificate and validation server
HITACHI LTD6 citations81
US7958367B2Jun 7, 2011
Authentication system and apparatus
HITACHI LTD15 citations79
US7409553B2Aug 5, 2008
Public key certificate generation method, validation method and apparatus thereof
HITACHI LTD16 citations78
US6360247B1Mar 19, 2002
Information processing system, communication method, and recording medium
HITACHI LTD8 citations74
US5907676AMay 25, 1999
Information processing system, communication method, and recording medium
HITACHI LTD15 citations74
US7720227B2May 18, 2010
Encryption method for SIP message and encrypted SIP communication system
HITACHI LTD7 citations73
US8041822B2Oct 18, 2011
Service network system and server device
HITACHI LTD3 citations62
US7984290B2Jul 19, 2011
System and method for encrypted communication
HITACHI LTD4 citations62
US7558952B2Jul 7, 2009
Method and apparatus for accelerating public-key certificate validation
HITACHI LTD5 citations61
US8380985B2Feb 19, 2013
Certificate validation method and certificate validation server and storage medium
HITACHI LTD4 citations60
US7392380B2Jun 24, 2008
Authentication and authorization infrastructure system with CRL issuance notification function
HITACHI LTD5 citations58
US7940780B2May 10, 2011
Data communication system enabling data communication between communication devices through a server
HITACHI LTD4 citations56
US11032627B2Jun 8, 2021
Maintenance device, presentation system, and program
HITACHI LTD0 citations52
US8635449B2Jan 21, 2014
Method of validation public key certificate and validation server
HITACHI LTD1 citations49
TAKATA OSAMU
3 patentsUS8218769B2Jul 10, 2012
Encrypted communication system, communication status management server, encrypted communication method, and communication status management method
TAKATA OSAMU6 citations71
US8081758B2Dec 20, 2011
Communication support server, communication support method, and communication support system
TAKATA OSAMU2 citations61
US8238555B2Aug 7, 2012
Management server, communication apparatus and program implementing key allocation system for encrypted communication
TAKATA OSAMU0 citations50
HASHIMOTO YOKO
3 patentsUS8094337B2Jan 10, 2012
Device and system for assisting printer selection through a network
HASHIMOTO YOKO5 citations59
US8176316B2May 8, 2012
Validation server, validation method, and program
HASHIMOTO YOKO2 citations58
US8819417B2Aug 26, 2014
Validation server, validation method, and program
HASHIMOTO YOKO0 citations47