Ryuuji Shibata

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Hagashiyamato, JP

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Patents Grantslast 30 patents

Information Patent Grant
Semiconductor memory device with data error compensation
- Patent number 5,398,206
- Issue date Mar 14, 1995
- Hitachi, Ltd.
- Mitsuru Akizawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Process for producing ROM
- Patent number 5,275,959
- Issue date Jan 4, 1994
- Hitachi, Ltd.
- Isamu Kobayashi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
ROM and process for producing the same
- Patent number 5,081,052
- Issue date Jan 14, 1992
- Hitachi, Ltd.
- Isamu Kobayashi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor integrated circuit device with MISFETS using two drai...
- Patent number 4,939,386
- Issue date Jul 3, 1990
- Hitachi, Ltd.
- Ryuuji Shibata
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Read-only memory
- Patent number 4,912,674
- Issue date Mar 27, 1990
- Hitachi, Ltd.
- Youichi Matsumoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Read-only memory
- Patent number 4,805,143
- Issue date Feb 14, 1989
- Hitachi Ltd.
- Youichi Matsumoto
- G11 - INFORMATION STORAGE