Masakazu Uehata

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Chiba, JP

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Patents Grantslast 30 patents

Information Patent Grant
Server generating basic signature data using signing target data, e...
- Patent number 9,628,281
- Issue date Apr 18, 2017
- Seiko Instruments Inc.
- Shinichi Murao
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Data certification system, server device, client device, publishing...
- Patent number 9,363,411
- Issue date Jun 7, 2016
- Seiko Instruments Inc.
- Shinichi Murao
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Long-term signature server, long-term signature terminal, and long-...
- Patent number 8,819,441
- Issue date Aug 26, 2014
- Seiko Instruments Inc.
- Shinichi Murao
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Time certifying server, reference time distributing server, time ce...
- Patent number 8,041,980
- Issue date Oct 18, 2011
- Seiko Instruments Inc.
- Masakazu Uehata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
LONG-TERM SIGNATURE SERVER, LONG-TERM SIGNATURE TERMINAL, AND LONG-...
- Publication number 20140337617
- Publication date Nov 13, 2014
- Shinichi Murao
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
DATA CERTIFICATION SYSTEM, SERVER DEVICE, CLIENT DEVICE, PUBLISHING...
- Publication number 20140285854
- Publication date Sep 25, 2014
- Shinichi Murao
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
LONG-TERM SIGNATURE SERVER, LONG-TERM SIGNATURE TERMINAL, AND LONG-...
- Publication number 20120303963
- Publication date Nov 29, 2012
- Shinichi Murao
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Time Certifying Server, Reference Time Distributing Server, Time Ce...
- Publication number 20080307247
- Publication date Dec 11, 2008
- Masakazu Uehata
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Server system and security system
- Publication number 20030009697
- Publication date Jan 9, 2003
- Masakazu Uehata
- G06 - COMPUTING CALCULATING COUNTING