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Yoshio Fujikawa
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Shizuoka, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Hydroelectric power generation apparatus
Patent number
10,947,950
Issue date
Mar 16, 2021
Tomoya Kawai
F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
Information
Patent Grant
Hydroelectric power generation apparatus
Patent number
10,648,449
Issue date
May 12, 2020
NTN Corporation
Tomoya Kawai
F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information
Patent Grant
Hydrostatic gas bearing, rotator and CT scanner
Patent number
8,052,327
Issue date
Nov 8, 2011
NTN Corporation
Yoshio Fujikawa
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Externally pressurized gas bearing and spindle equipment using this
Patent number
7,066,652
Issue date
Jun 27, 2006
NTN Corporation
Yoshio Fujikawa
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Bearing assembly equipped with rotation sensor to determine rotatio...
Patent number
6,956,367
Issue date
Oct 18, 2005
NTN Corporation
Yoshio Fujikawa
G01 - MEASURING TESTING
Information
Patent Grant
Foil bearing and spindle device using the same
Patent number
6,848,828
Issue date
Feb 1, 2005
NTN Corporation
Hidehiko Nishijima
B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
Information
Patent Grant
Externally pressurized gas bearing spindle
Patent number
6,581,857
Issue date
Jun 24, 2003
NTN Corporation
Shoji Fujii
B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
Information
Patent Grant
Externally pressurized gas bearing spindle assembly
Patent number
6,524,004
Issue date
Feb 25, 2003
NTN Corporation
Yoshio Fujikawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Externally pressurized gas bearing spindle assembly
Patent number
6,439,773
Issue date
Aug 27, 2002
NTN Corporation
Yoshio Fujikawa
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Externally pressurized gas bearing assembly
Patent number
6,019,515
Issue date
Feb 1, 2000
NTN Corporation
Shoji Fujii
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Externally pressurized bearing spindle
Patent number
5,660,480
Issue date
Aug 26, 1997
NTN Corporation
Shoji Fujii
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Spindle assembly
Patent number
5,073,037
Issue date
Dec 17, 1991
NTN Corporation
Yoshio Fujikawa
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Patents Applications
last 30 patents
Information
Patent Application
HYDROELECTRIC POWER GENERATION APPARATUS
Publication number
20190072065
Publication date
Mar 7, 2019
NTN CORPORATION
Tomoya KAWAI
F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information
Patent Application
Hydrostatic gas bearing, rotator and CT scanner
Publication number
20090034887
Publication date
Feb 5, 2009
NTN Corporation
Yoshio Fujikawa
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Application
Externally pressurized gas bearing and spindle equipment using this
Publication number
20040109622
Publication date
Jun 10, 2004
Yoshio Fujikawa
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Application
Bearing assembly equipped with rotation sensor capable of detecting...
Publication number
20030173956
Publication date
Sep 18, 2003
NTN Corporation
Yoshio Fujikawa
G01 - MEASURING TESTING
Information
Patent Application
Foil bearing and spindle device using the same
Publication number
20030169951
Publication date
Sep 11, 2003
NTT CORPORATION
Hidehiko Nishijima
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Application
Externally pressurized gas bearing spindle assembly
Publication number
20020122608
Publication date
Sep 5, 2002
Yoshio Fujikawa
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Application
Externally pressurized gas bearing spindle
Publication number
20020038827
Publication date
Apr 4, 2002
Shoji Fujii
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...