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Tetsuji Nagayama
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Kanagawa, JP
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last 30 patents
Information
Patent Grant
Method for producing semiconductor device
Patent number
6,057,243
Issue date
May 2, 2000
Sony Corporation
Tetsuji Nagayama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method of forming connection hole
Patent number
5,997,757
Issue date
Dec 7, 1999
Sony Corporation
Tetsuji Nagayama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Semiconductor device in which an anti-reflective layer is formed by...
Patent number
5,831,321
Issue date
Nov 3, 1998
Sony Corporation
Tetsuji Nagayama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method for forming a semiconductor device in which an anti reflecti...
Patent number
5,674,356
Issue date
Oct 7, 1997
Sony Corporation
Tetsuji Nagayama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Multilayer resist pattern forming method
Patent number
5,632,910
Issue date
May 27, 1997
Sony Corporation
Tetsuji Nagayama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Dry etching method
Patent number
5,419,809
Issue date
May 30, 1995
Sony Corporation
Tetsuji Nagayama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method of producing semiconductor device
Patent number
5,378,311
Issue date
Jan 3, 1995
Sony Corporation
Tetsuji Nagayama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method of producing semiconductor device using a hydrogen-enriched...
Patent number
5,369,061
Issue date
Nov 29, 1994
Sony Corporation
Tetsuji Nagayama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Dry etching method for W polycide using sulfur deposition
Patent number
5,368,686
Issue date
Nov 29, 1994
Sony Corporation
Tetsuya Tatsumi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Dry etching method
Patent number
5,354,421
Issue date
Oct 11, 1994
Sony Corporation
Tetsuya Tatsumi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Dry etching method
Patent number
5,268,070
Issue date
Dec 7, 1993
Sony Corporation
Tetsuji Nagayama
H01 - BASIC ELECTRIC ELEMENTS