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Tadashi Yamaura
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Kokubunji, JP
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last 30 patents
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Patent Grant
Microcomputer having a PROM including data security and test circuitry
Patent number
5,175,840
Issue date
Dec 29, 1992
Hitachi, Ltd.
Terumi Sawase
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Semiconductor integrated circuit device with built-in arrangement f...
Patent number
4,905,142
Issue date
Feb 27, 1990
Hitachi, Ltd.
Kiyoshi Matsubara
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Semiconductor device and process for producing the same
Patent number
4,860,087
Issue date
Aug 22, 1989
Hitachi, Ltd.
Kiyoshi Matsubara
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Semiconductor integrated circuit device with built-in arrangement f...
Patent number
4,777,586
Issue date
Oct 11, 1988
Hitachi, Ltd.
Kiyoshi Matsubara
G06 - COMPUTING CALCULATING COUNTING