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Hisao Abe
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Akita, JP
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Patents Grants
last 30 patents
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Patent Grant
Current restriction element responsive to applied voltage
Patent number
4,484,251
Issue date
Nov 20, 1984
TDK Electronics Co., Ltd.
Sho Masujima
H01 - BASIC ELECTRIC ELEMENTS
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Patent Grant
Non-linear dielectric element
Patent number
4,447,549
Issue date
May 8, 1984
TDK Kabushiki Kaisha
Sho Masujima
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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Patent Grant
Non-linear polycrystalline barium titanate-type dielectric element
Patent number
4,404,029
Issue date
Sep 13, 1983
TDK Electronics Co., Ltd.
Shoichi Iwaya
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES