Hisashi Umeki

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Vulnerability countermeasure device and vulnerability countermeasur...
- Patent number 9,372,995
- Issue date Jun 21, 2016
- Hitachi, Ltd.
- Tomohiro Shigemoto
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Key distribution method and system in secure broadcast communication
- Patent number 6,512,829
- Issue date Jan 28, 2003
- Hitach, Ltd.
- Mototsugu Nishioka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Client-server system for controlling access rights to certain servi...
- Patent number 6,189,032
- Issue date Feb 13, 2001
- Hitachi, Ltd.
- Seiichi Susaki
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Key distribution method and system in secure broadcast communication
- Patent number 6,041,408
- Issue date Mar 21, 2000
- Hitachi, Ltd.
- Mototsugu Nishioka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
VULNERABILITY COUNTERMEASURE DEVICE AND VULNERABILITY COUNTERMEASUR...
- Publication number 20140373160
- Publication date Dec 18, 2014
- Hitachi, Ltd
- Tomohiro Shigemoto
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
SECURITY LEVEL VISUALIZATION DEVICE
- Publication number 20130333045
- Publication date Dec 12, 2013
- Hitachi, Ltd
- Tomohiro Shigemoto
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
TOKENIZATION SYSTEM
- Publication number 20120272326
- Publication date Oct 25, 2012
- Hitachi, Ltd.
- SATOSHI KAI
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
ENCRYPTED TRAFFIC TEST SYSTEM
- Publication number 20120210125
- Publication date Aug 16, 2012
- Hitachi, Ltd
- Tomohiro Shigemoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Public key encryption method and communication system using public...
- Publication number 20020015491
- Publication date Feb 7, 2002
- Mototsugu Nishioka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE