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Yasunobu Kosa
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Kodaira, JP
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last 30 patents
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Patent Grant
Semiconductor memory device and a method of manufacturing the same
Patent number
4,926,222
Issue date
May 15, 1990
Hitachi, Ltd.
Yasunobu Kosa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method of manufacturing semiconductor memory device
Patent number
4,818,718
Issue date
Apr 4, 1989
Hitachi, Limited
Yasunobu Kosa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Semiconductor integrated circuit device and method of manufacturing...
Patent number
4,764,479
Issue date
Aug 16, 1988
Hitachi, Limited
Yasunobu Kosa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Forming memory transistors with varying gate oxide thicknesses
Patent number
4,651,406
Issue date
Mar 24, 1987
Hitachi, Ltd.
Shinji Shimizu
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Semiconductor integrated circuit device with memory MISFETS and thi...
Patent number
4,471,373
Issue date
Sep 11, 1984
Hitachi, Ltd.
Shinji Shimizu
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Semiconductor memory device
Patent number
4,451,904
Issue date
May 29, 1984
Hitachi, Ltd.
June Sugiura
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device with peripheral circuits
Patent number
4,426,764
Issue date
Jan 24, 1984
Hitachi, Ltd.
Yasunobu Kosa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method of manufacturing a semiconductor integrated circuit device
Patent number
4,373,249
Issue date
Feb 15, 1983
Hitachi, Ltd.
Yasunobu Kosa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method for manufacturing complementary insulated gate field effect...
Patent number
RE31079
Issue date
Nov 16, 1982
Hitachi, Ltd.
Kouichi Nagasawa
029 - Metal working
Information
Patent Grant
Method of fabricating a mis-type device by using a gate electrode a...
Patent number
4,356,041
Issue date
Oct 26, 1982
Hitachi, Ltd.
Yasunobu Kosa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Interconnection structure for semiconductor integrated circuits
Patent number
4,199,778
Issue date
Apr 22, 1980
Hitachi, Ltd.
Toshiaki Masuhara
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method for manufacturing complementary insulated gate field effect...
Patent number
4,110,899
Issue date
Sep 5, 1978
Hitachi, Ltd.
Kouichi Nagasawa
H01 - BASIC ELECTRIC ELEMENTS