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Kenichi Ichikawa
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Iwata-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Outer ring, drawn cup needle roller bearing, drawn cup needle rolle...
Patent number
7,665,899
Issue date
Feb 23, 2010
NTN Corporation
Tomoaki Terada
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Rolling bearing, cam-follower with roller, and cam
Patent number
7,603,929
Issue date
Oct 20, 2009
NTN Corporation
Kenichi Ichikawa
C21 - METALLURGY OF IRON
Information
Patent Grant
Needle roller bearing and its manufacturing method
Patent number
7,571,706
Issue date
Aug 11, 2009
NTN Corporation
Kenichi Ichikawa
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Full-type rolling bearing and roller cam follower for engine
Patent number
7,490,583
Issue date
Feb 17, 2009
NTN Corporation
Tadatoshi Suzuki
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Rotary unit having clutch function
Patent number
5,664,653
Issue date
Sep 9, 1997
NTN Corporation
Masahiro Kurita
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Torque limiter
Patent number
5,271,486
Issue date
Dec 21, 1993
NTN Corporation
Yuji Okamoto
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Patents Applications
last 30 patents
Information
Patent Application
Needle roller bearing and its manufacturing method
Publication number
20070068338
Publication date
Mar 29, 2007
Kenichi Ichikawa
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Application
Outer ring, drawn cup needle roller bearing, drawn cup needle rolle...
Publication number
20070047864
Publication date
Mar 1, 2007
Tomoaki Terada
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Application
Rolling bearing, cam-follower with roller, and cam
Publication number
20040247216
Publication date
Dec 9, 2004
NTN Corporation
Kenichi Ichikawa
C21 - METALLURGY OF IRON
Information
Patent Application
Full-type rolling bearing and roller cam follower for engine
Publication number
20040079310
Publication date
Apr 29, 2004
NTN Corporation
Tadatoshi Suzuki
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...