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US 4,193,810 AGranted
Concrete composition
AssigneeChevron Research Company
InventorRichard L. Ferm
Life of this patent
Estimating the term…
Abstract
Concrete articles of improved strength are prepared by impregnating the articles with aqueous solutions of alkali metal or alkaline earth metal polysulfides.
Claims5
A process for producing a portland cement concrete article of increased strength by impregnating the article with an aqueous solution of an alkali metal or alkaline earth metal polysulfide.
Dependencies are inferred from the claim text.