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Nobuya Takagi
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Osaka-shi, JP
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Patents Grants
last 30 patents
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Patent Grant
IC card with hierarchical file structure
Patent number
5,408,082
Issue date
Apr 18, 1995
Matsushita Electric Industrial Co., Ltd.
Nobuya Takagi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Secure encrypted data communication system having physically secure...
Patent number
5,227,613
Issue date
Jul 13, 1993
Matsushita Electric Industrial Co., Ltd.
Nobuya Takagi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Communication apparatus
Patent number
5,109,152
Issue date
Apr 28, 1992
Matsushita Electric Industrial Co., Ltd.
Nobuya Takagi
G06 - COMPUTING CALCULATING COUNTING
Patents Applications
last 30 patents
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Patent Application
Electronic authentication system, URL input system, URL input devic...
Publication number
20020046338
Publication date
Apr 18, 2002
Masaaki Ueda
G06 - COMPUTING CALCULATING COUNTING