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Yasuharu Yokoyama
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Saitama-Ken, JP
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Patents Grants
last 30 patents
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Patent Grant
Lubricating oil composition
Patent number
8,691,739
Issue date
Apr 8, 2014
ExxonMobil Research and Engineering Company
Yasuharu Yokoyama
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Patents Applications
last 30 patents
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Patent Application
Lubricating oil composition
Publication number
20070032392
Publication date
Feb 8, 2007
Yasuharu Yokoyama
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...