The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 21, 2012
Filed:
Mar. 18, 2010
William G. England, Suwanee, GA (US);
William G. England, Suwanee, GA (US);
Purafil, Inc., Doraville, GA (US);
Abstract
A solid air filtration medium includes an impregnate with an organic amine and an inorganic metal salt. The medium has from about 0.1 to about 25% by weight of impregnate. The impregnate contains from about 0.1 to about 5% by weight organic amine, and the organic amine includes aqueous urea, solid urea, melamine or mixtures thereof. The impregnate contains from about 0.1 to about 5% by weight metal salt, and the metal salt includes magnesium oxide, calcium oxide or mixtures thereof. The impregnate optionally further includes a surfactant such as polyacrylic acid. Methods for forming a solid air filtration medium having an impregnate containing an organic amine and an inorganic metal salt and methods for removing contaminants from a fluid stream are also provided.