P

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 patents
US7080251B2Jul 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 patents

HASHIMOTO YOKO

3 patents

SUGINO MACH

2 patents

YAZAKI CORP

1 patent

HOSHINO KAZUYOSHI

1 patent

KAWAUCHI TAKASHI

1 patent

SATO CHINATSU

1 patent

HONDA MOTOR CO LTD

1 patent

SAKATA MASAYUKI

1 patent

KAJI TADASHI

1 patent

KUMAGAI YOKO

1 patent