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Kiyoshi Toyama
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Gifu, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Method of using a substrate with magnetic substance of a magnetic s...
Patent number
6,153,321
Issue date
Nov 28, 2000
Teijun Seiki Co.
Kiyoshi Toyama
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method of manufacturing magnetic patterns
Patent number
5,580,639
Issue date
Dec 3, 1996
Teijin Seiki Co., Ltd.
Masayuki Togawa
G01 - MEASURING TESTING
Information
Patent Grant
Method of manufacturing a medium having a magnetic pattern
Patent number
5,527,663
Issue date
Jun 18, 1996
Teijin Seiki Co., Ltd.
Masayuki Togawa
G01 - MEASURING TESTING
Information
Patent Grant
Method of manufacturing article having magnetic patterns
Patent number
5,445,707
Issue date
Aug 29, 1995
Teijin Seiko Co., Ltd.
Kiyoshi Toyama
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Magneto-optically modulating system
Patent number
5,434,934
Issue date
Jul 18, 1995
Teijin Seiki Co., Ltd.
Masayuki Togawa
G02 - OPTICS
Information
Patent Grant
Method of manufacturing a medium having a magnetic pattern
Patent number
5,429,911
Issue date
Jul 4, 1995
Teijin Seiki Co., Ltd.
Masayuki Togawa
G01 - MEASURING TESTING
Information
Patent Grant
Method of manufacturing article having magnetic patterns
Patent number
5,427,675
Issue date
Jun 27, 1995
Teijin Seiki Co., Ltd.
Kiyoshi Toyama
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Magnetic medium comprising a substrate having pits and grooves of s...
Patent number
5,350,618
Issue date
Sep 27, 1994
Teijin Seiki Co., Ltd.
Masayuki Togawa
G01 - MEASURING TESTING
Information
Patent Grant
Magnetic medium and method of manufacturing the same
Patent number
5,336,586
Issue date
Aug 9, 1994
Teijin Seiki Co., Ltd.
Masayuki Togawa
G01 - MEASURING TESTING
Information
Patent Grant
Optical position sensor using Faraday effect element and magnetic s...
Patent number
4,931,635
Issue date
Jun 5, 1990
Teijin Seiki Company Limited
Kiyoshi Toyama
G01 - MEASURING TESTING
Information
Patent Grant
Optical position sensor using Kerr effect and a magnetic scale
Patent number
4,931,634
Issue date
Jun 5, 1990
Teijin Seiki Company Limited
Kiyoshi Toyama
G01 - MEASURING TESTING