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Atsuhiko Ohta
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Nara, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Steel for use in high strength pinion shaft and manufacturing metho...
Patent number
7,740,722
Issue date
Jun 22, 2010
Jtekt Corporation
Katsunori Takada
B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information
Patent Grant
Steering rack comprising steel bar with rack teeth
Patent number
7,662,245
Issue date
Feb 16, 2010
Koyo Seiko Co., Ltd.
Atsuhiko Ohta
B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information
Patent Grant
Bearing material
Patent number
5,960,250
Issue date
Sep 28, 1999
Kawasaki Steel Corporation
Satosi Yasumoto
C21 - METALLURGY OF IRON
Information
Patent Grant
Bearing component
Patent number
5,908,515
Issue date
Jun 1, 1999
Koyo Seiko Co., Ltd.
Masao Goto
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Steel composition for bearings and method of producing the same
Patent number
5,733,388
Issue date
Mar 31, 1998
Daido Tokiushuko Kabushiki Kaisha
Yutaka Kurebayashi
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Patents Applications
last 30 patents
Information
Patent Application
Steel bar for steering rack manufacturing method of the same, and s...
Publication number
20070113698
Publication date
May 24, 2007
Atsuhiko Ohta
C21 - METALLURGY OF IRON
Information
Patent Application
Steel for use in high strength pinion shaft and manufacturing metho...
Publication number
20040202567
Publication date
Oct 14, 2004
KOYO SEIKO CO., LTD.
Katsunori Takada
C21 - METALLURGY OF IRON