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Tadashi Kiyokawa
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Fukui, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Hydrodynamic bearing, hydrodynamic bearing apparatus
Patent number
6,447,167
Issue date
Sep 10, 2002
Seiko Instruments Inc.
Tsuyoshi Kashiwada
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Method for manufacturing hydrogen storage material
Patent number
6,306,339
Issue date
Oct 23, 2001
Kiyokawa Plating Industries, Co., Ltd.
Tadashi Kiyokawa
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Hydrogen storage material
Patent number
6,143,052
Issue date
Nov 7, 2000
Kiyokawa Plating Industries, Co., Ltd.
Tadashi Kiyokawa
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Metal film resistor having fuse function and method for producing t...
Patent number
5,961,808
Issue date
Oct 5, 1999
Kiyokawa Mekki Kougyo Co., Ltd.
Tadashi Kiyokawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Metal film resistor having fuse function and method for producing t...
Patent number
5,863,407
Issue date
Jan 26, 1999
Kiyokawa Mekki Kougyo Co., Ltd.
Tadashi Kiyokawa
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
Information
Patent Application
Hydrodynamic bearing, hydrodynamic bearing apparatus, fabrication m...
Publication number
20020164096
Publication date
Nov 7, 2002
Seiko Instruments Inc.
Tsuyoshi Kashiwada
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...