Chizu Hamasaki

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Kawasaki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Authentication apparatus, authentication method, and data using method
- Patent number 8,751,673
- Issue date Jun 10, 2014
- Fujitsu Limited
- Chizu Hamasaki
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Billing system, and device constituting same
- Patent number 7,510,113
- Issue date Mar 31, 2009
- Fujitsu Limited
- Yoichiro Igarashi
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
System for controlling communications in a network based on a previ...
- Patent number 7,117,265
- Issue date Oct 3, 2006
- Fujitsu Limited
- Chizu Hamasaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
AUTHENTICATION APPARATUS, AUTHENTICATION METHOD, AND DATA USING METHOD
- Publication number 20100325296
- Publication date Dec 23, 2010
- Fujitsu Limited
- Chizu Hamasaki
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Communication system
- Publication number 20030229701
- Publication date Dec 11, 2003
- Chizu Hamasaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Billing system, and device constituting same
- Publication number 20020188562
- Publication date Dec 12, 2002
- Yoichiro Igarashi
- G06 - COMPUTING CALCULATING COUNTING