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:
Nov. 18, 2003
Filed:
Jan. 28, 2002
Applicant:
Inventors:
Bipin S. Parekh, Chelmsford, MA (US);
Anthony J. DiLeo, Westford, MA (US);
Edward Deane, Newton Junction, NH (US);
Ronald L. Bruening, American Fork, UT (US);
Assignee:
Mykrolis Corporation, Billerica, MA (US);
Primary Examiner:
Int. Cl.
CPC ...
B01D 6/114 ;
U.S. Cl.
CPC ...
B01D 6/114 ;
Abstract
The invention pertains to a method for removing metallic ions and/or particulate material from an aqueous acid solution using particle removing membranes (e.g., ultra high molecular weight polyethylene) having immobilized ligand groups (e.g., macrocycle or other similar chelating ligands) that possess high equilibrium binding constants for ion and particulate removal. The method is particularly useful for simultaneously filtering/purifying aqueous hydrofluoric or hydrochloric acid.