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Patents Grants
last 30 patents
Information
Patent Grant
Process for machining an edge portion of a ceramic article preform...
Patent number
5,954,567
Issue date
Sep 21, 1999
NGK Insulators, Ltd.
Akifumi Nishio
B24 - GRINDING POLISHING
Information
Patent Grant
Process and apparatus for chucking and machining an elongated cylin...
Patent number
5,893,793
Issue date
Apr 13, 1999
NGK Insulators, Ltd.
Akifumi Nishio
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Patent Grant
Method and apparatus for testing ceramic specimens by simultaneous...
Patent number
5,625,154
Issue date
Apr 29, 1997
NGK Ceramics Europe S.A.
Keiji Matsuhiro
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS