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Tatsuya Kurihara
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Yokohama-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Magnetic marker and manufacturing method therefor
Patent number
6,864,793
Issue date
Mar 8, 2005
NHK Spring Co., Ltd.
Yoshiki Ono
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Pulse generating element and a method and an apparatus for manufact...
Patent number
5,707,753
Issue date
Jan 13, 1998
NHK Spring Co., Ltd.
Tatsuya Kurihara
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Objects to be checked for authenticity, and method and apparatus fo...
Patent number
5,602,381
Issue date
Feb 11, 1997
NHK Spring Co., Ltd.
Hidekazu Hoshino
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method and apparatus for checking the authenticity of a checking ob...
Patent number
5,594,229
Issue date
Jan 14, 1997
NHK Spring Co., Ltd.
Hidekazu Hoshino
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Checking objects including bistable magnetic devices, to be checked...
Patent number
5,583,333
Issue date
Dec 10, 1996
NHK Spring Co., Ltd.
Hidekazu Hoshino
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method and an apparatus for checking objects to be checked for auth...
Patent number
5,473,147
Issue date
Dec 5, 1995
NHK Spring Co., Ltd.
Hidekazu Hoshino
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Using high-permeability magnetic elements randomly scattered in the...
Patent number
5,451,759
Issue date
Sep 19, 1995
NHK Spring Co., Ltd.
Hidekazu Hoshino
G06 - COMPUTING CALCULATING COUNTING
Patents Applications
last 30 patents
Information
Patent Application
Magnetic marker and manufacturing method therefor
Publication number
20020122956
Publication date
Sep 5, 2002
NHK Spring Co., Ltd.
Yoshiki Ono
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...