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Water-soluble metal working lubricants
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Patent number 3,945,930
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Issue date Mar 23, 1976
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Toho Chemical Industry Co., Ltd.
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Noboru Sugiyama
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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Rolling oils
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Patent number 3,933,660
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Issue date Jan 20, 1976
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Toho Chemical Industry Co., Ltd.
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Hachiro Tadenuma
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...