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Hiroyuki Nojima
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Kanagawa, JP
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last 30 patents
Information
Patent Grant
Method of forming annular grooves in a ball polishing apparatus
Patent number
6,223,635
Issue date
May 1, 2001
NSK Ltd.
Katsuhisa Tonooka
B24 - GRINDING POLISHING
Information
Patent Grant
Sphere grinding apparatus
Patent number
6,110,023
Issue date
Aug 29, 2000
NSK Ltd.
Masami Shinomoto
B24 - GRINDING POLISHING
Information
Patent Grant
Sphere polisher
Patent number
5,921,851
Issue date
Jul 13, 1999
NSK Ltd.
Tomita Suzuki
B24 - GRINDING POLISHING
Information
Patent Grant
Sphere polishing machine
Patent number
5,913,717
Issue date
Jun 22, 1999
NSK Ltd.
Katsuhisa Tonooka
B24 - GRINDING POLISHING
Information
Patent Grant
Ball polishing method and apparatus, and annular groove forming method
Patent number
5,906,535
Issue date
May 25, 1999
NSK Ltd.
Katsuhisa Tonooka
B24 - GRINDING POLISHING