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US 4,035,149 AGranted
Vapor barriers for liquid conservation
AssigneeShell Oil Company
InventorsPaul R. Scott, Wilmer D. Johnston, Jerome L. Kyrish
Life of this patent
Estimating the term…
Abstract
The evaporation of volatile non-aqueous liquids is inhibited by a floating layer of expanded cereal grains optionally treated with fluorocarbons or perlite treated with fluorocarbons.
Claims4
A method for inhibiting evaporation of volatile non-aqueous liquids by covering the surface of said liquids with a floating layer of expanded cereal grain.
Dependencies are inferred from the claim text.