Koji Takeuchi

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Kyoto, JP

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Patents Grantslast 30 patents

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Viscosity index improver, engine lubricant composition, and concent...
- Patent number 5,891,831
- Issue date Apr 6, 1999
- Sanyo Chemical Industries, Ltd.
- Hidehiko Matsuya
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...