Yuichi Ando

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Takarazuka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of manufacturing core implanted semiconductor devices
- Patent number 5,670,402
- Issue date Sep 23, 1997
- Ricoh Company, Ltd.
- Koichi Sogawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method for producing semiconductor memory device having a planar ce...
- Patent number 5,362,662
- Issue date Nov 8, 1994
- Ricoh Company, Ltd.
- Yuichi Ando
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor memory device
- Patent number 5,308,781
- Issue date May 3, 1994
- Ricoh Company, Ltd.
- Yuichi Ando
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor integrated circuit device using a planar structure wi...
- Patent number 5,119,165
- Issue date Jun 2, 1992
- Ricoh Company, Ltd.
- Yuichi Ando
- H01 - BASIC ELECTRIC ELEMENTS