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Masamichi Ishihara
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Patents Grants
last 30 patents
Information
Patent Grant
Sealed stacked arrangement of semiconductor devices
Patent number
RE37539
Issue date
Feb 5, 2002
Hitachi, Ltd.
Satoshi Oguchi
257 - Active solid-state devices
Information
Patent Grant
Dynamic type semiconductor memory device
Patent number
6,108,264
Issue date
Aug 22, 2000
Hitachi, Ltd.
Yasushi Takahashi
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor integrated circuit device, and process and apparatus...
Patent number
5,910,010
Issue date
Jun 8, 1999
Hitachi, Ltd.
Hirotaka Nishizawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Semiconductor device with lead structure on principal surface of chip
Patent number
5,869,888
Issue date
Feb 9, 1999
Hitachi, Ltd.
Kunihiro Tsubosaki
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Semiconductor memory having both a refresh operation cycle and a no...
Patent number
5,862,095
Issue date
Jan 19, 1999
Hitachi, Ltd.
Yasushi Takahashi
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device with improved substrate arrangement to...
Patent number
5,805,513
Issue date
Sep 8, 1998
Hitachi, Ltd.
Yasushi Takahashi
G11 - INFORMATION STORAGE
Information
Patent Grant
Method of making mask pattern data and process for manufacturing th...
Patent number
5,736,277
Issue date
Apr 7, 1998
Hitachi, Ltd.
Toshitsugu Takekuma
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Semiconductor memory having a refresh operation cycle and operating...
Patent number
5,719,815
Issue date
Feb 17, 1998
Hitachi, Ltd.
Yasushi Takahashi
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor device
Patent number
5,714,405
Issue date
Feb 3, 1998
Hitachi, Ltd.
Kunihiro Tsubosaki
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Sealed stacked arrangement of semiconductor devices
Patent number
5,701,031
Issue date
Dec 23, 1997
Hitachi, Ltd.
Satoshi Oguchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Method of fabrication of semiconductor integrated circuit device
Patent number
5,610,089
Issue date
Mar 11, 1997
Hitachi, Ltd.
Hidetoshi Iwai
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Semiconductor device with lead structure within the planar area of...
Patent number
5,583,375
Issue date
Dec 10, 1996
Hitachi, Ltd.
Kunihiro Tsubosaki
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method of making mask pattern data and process for manufacturing th...
Patent number
5,565,285
Issue date
Oct 15, 1996
Hitachi, Ltd.
Toshitsugu Takekuma
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Semiconductor integrated circuit device having output and internal...
Patent number
5,534,723
Issue date
Jul 9, 1996
Hitachi, Ltd.
Hidetoshi Iwai
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Semiconductor integrated device and wiring correction arrangement t...
Patent number
5,483,490
Issue date
Jan 9, 1996
Hitachi, Ltd.
Hidetoshi Iwai
G11 - INFORMATION STORAGE
Information
Patent Grant
Method of making mask pattern data and process for manufacturing th...
Patent number
5,458,998
Issue date
Oct 17, 1995
Hitachi, Ltd.
Toshitsugu Takekuma
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Semiconductor integrated circuit device having a first MISFET of an...
Patent number
5,436,483
Issue date
Jul 25, 1995
Hitachi, Ltd.
Hidetoshi Iwai
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Semiconductor integrated circuit device having input protective ele...
Patent number
5,436,484
Issue date
Jul 25, 1995
Hitachi, Ltd.
Hidetoshi Iwai
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Semiconductor memory device with improved substrate arrangement to...
Patent number
5,426,613
Issue date
Jun 20, 1995
Hitachi, Ltd.
Yasushi Takahashi
G11 - INFORMATION STORAGE
Information
Patent Grant
Special mode control method for dynamic random access memory
Patent number
5,410,507
Issue date
Apr 25, 1995
Hitachi, Ltd.
Masanori Tazunoki
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device
Patent number
5,359,561
Issue date
Oct 25, 1994
Hitachi, Ltd.
Shigetoshi Sakomura
G11 - INFORMATION STORAGE
Information
Patent Grant
Multi-chip semiconductor package
Patent number
5,332,922
Issue date
Jul 26, 1994
Hitachi, Ltd.
Satoshi Oguchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor integrated device and wiring correction arrangement t...
Patent number
5,289,416
Issue date
Feb 22, 1994
Hitachi, Ltd.
Hidetoshi Iwai
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor integrated circuit device having protective/output el...
Patent number
5,276,346
Issue date
Jan 4, 1994
Hitachi, Ltd.
Hidetoshi Iwai
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Semiconductor memory device with improved substrate arrangement to...
Patent number
5,217,917
Issue date
Jun 8, 1993
Hitachi, Ltd.
Yasushi Takahashi
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor integrated circuit device having a plurality of memor...
Patent number
5,208,782
Issue date
May 4, 1993
Hitachi, Ltd.
Toshiyuki Sakuta
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Semiconductor integrated circuit device
Patent number
5,151,772
Issue date
Sep 29, 1992
Hitachi, Ltd.
Yasushi Takahashi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Semiconductor memory device with low-house pads for electron beam test
Patent number
5,021,998
Issue date
Jun 4, 1991
Hitachi, Ltd.
Yukihide Suzuki
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Memory including address registers for increasing access speed to t...
Patent number
5,018,109
Issue date
May 21, 1991
Hitachi, Ltd.
Takashi Shinoda
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device
Patent number
4,991,139
Issue date
Feb 5, 1991
Hitachi, Ltd.
Yasushi Takahashi
G11 - INFORMATION STORAGE