Kazuyuki Yazumi

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Patents Grantslast 30 patents

Information Patent Grant
Electronic money storing apparatus and IC card control method
- Patent number 6,321,980
- Issue date Nov 27, 2001
- Hitachi, Ltd.
- Kazuyuki Yazumi
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Electronic money coffer
- Patent number 6,109,523
- Issue date Aug 29, 2000
- Hitachi, Ltd.
- Hitoshi Maekawa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Electronic money storing apparatus and IC card control method
- Patent number 6,032,858
- Issue date Mar 7, 2000
- Hitachi, Ltd.
- Kazuyuki Yazumi
- G06 - COMPUTING CALCULATING COUNTING