Method for removal of gaseous formaldehyde from the atmosphere
AssigneePure Air Corporation
InventorNorman G. Gaylord
Life of this patent
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Abstract
A method for purifying air by removing gaseous formaldehyde under ambient conditions, by bringing the air in contact with a solid shaped composition consisting essentially of one or more polyhydric water-soluble polymers and ambient moisture, in the absence and in the presence of a solid substrate.
Claims26
A method for purifying air by removal of gaseous formaldehyde which consists in permitting the air to come in contact with a solid shaped composition consisting essentially of one or more polyhydric water-soluble polymers and ambient moisture.
The method for purifying air by removal of gaseous formaldehyde which consists in permitting the air to come in contact with a solid substrate which contains a coating consisting essentially of one or more polyhydric water-soluble polymers and ambient moisture.
A method for purifying air by removal of gaseous formaldehyde which consists in permitting the air to come in contact with a mixture of a solid absorbent and a solid shaped composition consisting essentially of one or more polyhydric water-soluble polymers and ambient moisture.
Dependencies are inferred from the claim text.