Yutaka Tagawa

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Attribute certificate validation method and device
- Patent number 7,840,804
- Issue date Nov 23, 2010
- Hitachi, Ltd.
- Mitsuhiro Oikawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Print managing apparatus, print managing method, and program
- Publication number 20090237713
- Publication date Sep 24, 2009
- Ryu Ebisawa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
PRINT MANAGEMENT SYSTEM AND METHOD
- Publication number 20090174893
- Publication date Jul 9, 2009
- Yasuhiro Fujii
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
COPY MACHINE CONTROL APPARATUS AND COPY MACHINE CONTROL METHOD
- Publication number 20080239346
- Publication date Oct 2, 2008
- Hitachi, Ltd.
- Yasuhiro Fujii
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Attribute certificate validation method and device
- Publication number 20060277417
- Publication date Dec 7, 2006
- Mitsuhiro Oikawa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Electronic certificate validity check system and its method
- Publication number 20050193192
- Publication date Sep 1, 2005
- Hisao Sakazaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE