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Keijiro Uehara
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Tokyo, JP
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last 30 patents
Information
Patent Grant
Semiconductor integrated circuit
Patent number
6,342,710
Issue date
Jan 29, 2002
Hitachi, Ltd.
Hisayuki Higuchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor integrated circuit
Patent number
6,121,646
Issue date
Sep 19, 2000
Hitachi, Ltd.
Hisayuki Higuchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Method for manufacturing integrated circuits with a step for replac...
Patent number
5,391,501
Issue date
Feb 21, 1995
Hitachi, Ltd.
Mitsuo Usami
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method of making a semiconductor including forming graft/extrinsic...
Patent number
4,675,983
Issue date
Jun 30, 1987
Hitachi, Ltd.
Keijiro Uehara
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method of forming bipolar transistors with graft base regions
Patent number
4,640,721
Issue date
Feb 3, 1987
Hitachi, Ltd.
Keijiro Uehara
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method for making semiconductor device
Patent number
4,362,599
Issue date
Dec 7, 1982
Hitachi, Ltd.
Ichiro Imaizumi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Junction isolated IC with thick EPI portion having sides at least 2...
Patent number
4,278,987
Issue date
Jul 14, 1981
Hitachi, Ltd.
Ichiro Imaizumi
H01 - BASIC ELECTRIC ELEMENTS