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:
Apr. 16, 2013
Filed:
Aug. 17, 2012
William G. England, Suwanee, GA (US);
William G. England, Suwanee, GA (US);
Purafil, Inc., Doraville, GA (US);
Abstract
A method for removing at least one contaminant from a fluid stream includes filtering the fluid stream with a filtration medium. The filtration medium includes an impregnate. The impregnate includes an organic amine and an inorganic metal salt. The inorganic metal salt includes magnesium oxide, calcium oxide or combinations thereof. 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. The impregnate optionally further includes a surfactant such as polyacrylic acid. In some embodiments, the method includes removing at least two contaminants from the fluid stream.