Ryuji Yamamura

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Tokyo, JP

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Patents Grantslast 30 patents

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Semiconductor integrated circuit device with internal voltage contr...
- Patent number 5,352,935
- Issue date Oct 4, 1994
- NEC Corporation
- Ryuji Yamamura
- G05 - CONTROLLING REGULATING
Information Patent Grant
Output gate for a semiconductor IC
- Patent number 5,289,061
- Issue date Feb 22, 1994
- NEC Corporation
- Tadahiko Sugibayashi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Semiconductor memory device equipped with step-down power voltage s...
- Patent number 5,272,677
- Issue date Dec 21, 1993
- NEC Corporation
- Ryuji Yamamura
- G11 - INFORMATION STORAGE
Information Patent Grant
Photo reticle for fabricating a semiconductor device
- Patent number 5,250,983
- Issue date Oct 5, 1993
- NEC Corporation
- Ryuji Yamamura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Semiconductor input protection device
- Patent number 5,027,252
- Issue date Jun 25, 1991
- NEC Corporation
- Ryuji Yamamura
- H01 - BASIC ELECTRIC ELEMENTS