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. 24, 2009
Filed:
Feb. 22, 2006
Leland Vane, Cincinnati, OH (US);
Ravi Ponangi, Modesto, CA (US);
Vasudevan Namboodiri, Mason, OH (US);
Leland Vane, Cincinnati, OH (US);
Ravi Ponangi, Modesto, CA (US);
Vasudevan Namboodiri, Mason, OH (US);
The United States of America as represented by the Admin. of Environmental Prot. Agcy, Washington, DC (US);
Abstract
Hydrophilic cross-linked polymeric membranes, when prepared according to the process of the present invention, are unique in character in as much as the steady state permeability of the membrane has been altered by blending and cross-linking polyalkyl amines and polyalcohols. To obtain desired results, the compositions must contain at least 10% polyalkyl amines, with preferred amounts of polyalkyl amines in the composition being in excess of 40%, with over 50% polyalkyl amine concentration by weight.