Kazumasa Ibi

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Kashima-gun, JP

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Patents Grantslast 30 patents

Information Patent Grant
Extreme-pressure additive, process for producing the same, cutting...
- Patent number 6,413,917
- Issue date Jul 2, 2002
- Dainippon Ink and Chemicals, Inc.
- Shigeru Yamada
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...