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Toshio Wada
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Tokyo, JP
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last 30 patents
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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
Semiconductor memory device having memory cells with enhanced capac...
Patent number
5,459,685
Issue date
Oct 17, 1995
Nippon Steel Corporation
Kenji Anzai
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Non-volatile semiconductor memory device having memory cells, each...
Patent number
5,450,341
Issue date
Sep 12, 1995
Nippon Steel Corporation
Kikuzo Sawada
G11 - INFORMATION STORAGE
Information
Patent Grant
MOS-type semiconductor device and method of making the same
Patent number
5,436,481
Issue date
Jul 25, 1995
Nippon Steel Corporation
Yuichi Egawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Non-volatile semiconductor memory cell capable of storing more than...
Patent number
5,424,978
Issue date
Jun 13, 1995
Nippon Steel Corporation
Toshio Wada
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
Non-volatile semiconductor memory device capable of storing multi-v...
Patent number
5,412,601
Issue date
May 2, 1995
Nippon Steel Corporation
Kikuzo Sawada
G11 - INFORMATION STORAGE
Information
Patent Grant
MOS semiconductor memory device
Patent number
5,329,483
Issue date
Jul 12, 1994
Nippon Steel Corporation
Toshio Wada
G11 - INFORMATION STORAGE
Information
Patent Grant
Method and apparatus for projection exposure
Patent number
5,329,335
Issue date
Jul 12, 1994
Nippon Steel Corporation
Toshio Wada
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
MOS memory device
Patent number
5,323,342
Issue date
Jun 21, 1994
Nippon Steel Corporation
Toshio Wada
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory and memorizing method to read only semiconduct...
Patent number
5,313,418
Issue date
May 17, 1994
Nippon Steel
Toshio Wada
G11 - INFORMATION STORAGE
Information
Patent Grant
Method of cleaning a photo-mask
Patent number
4,569,695
Issue date
Feb 11, 1986
NEC Corporation
Hiromi Yamashita
B08 - CLEANING