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Yugo Tomioka
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Sagamihara, JP
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last 30 patents
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Patent Grant
Nonvolatile semiconductor memory device and a method of making the...
Patent number
5,796,140
Issue date
Aug 18, 1998
Nippon Steel Corporation
Yugo Tomioka
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Nonvolatile semiconductor storage device and method of manufacturing
Patent number
5,793,081
Issue date
Aug 11, 1998
Nippon Steel Corporation
Yugo Tomioka
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Multi-value level type non-volatile semiconductor memory unit and m...
Patent number
5,668,756
Issue date
Sep 16, 1997
Nippon Steel Corporation
Yugo Tomioka
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor device having field-shield isolation structures and a...
Patent number
5,641,989
Issue date
Jun 24, 1997
Nippon Steel Corporation
Yugo Tomioka
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Non-volatile semiconductor memory device with improved rewrite speed
Patent number
5,640,032
Issue date
Jun 17, 1997
Nippon Steel Corporation
Yugo Tomioka
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Electrically alterable n-bit per cell non-volatile memory with refe...
Patent number
5,596,527
Issue date
Jan 21, 1997
Nippon Steel Corporation
Yugo Tomioka
G11 - INFORMATION STORAGE
Information
Patent Grant
Method of writing into non-volatile semiconductor memory
Patent number
5,418,743
Issue date
May 23, 1995
Nippon Steel Corporation
Yugo Tomioka
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor device having conducting layers connected through con...
Patent number
5,355,023
Issue date
Oct 11, 1994
Nippon Steel Corporation
Yugo Tomioka
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Semiconductor memory having a memory cell including a capacitor wit...
Patent number
5,343,062
Issue date
Aug 30, 1994
Nippon Steel Corporation
Yugo Tomioka
H01 - BASIC ELECTRIC ELEMENTS