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:
Mar. 29, 2011
Filed:
Feb. 06, 2007
Ja-young Koo, Billerica, MA (US);
Sung Pyo Hong, Kyungbuk, KR;
Jong Hwa Lee, Seoul, KR;
Kwan Young Ryu, Seoul, KR;
Ja-Young Koo, Billerica, MA (US);
Sung Pyo Hong, Kyungbuk, KR;
Jong Hwa Lee, Seoul, KR;
Kwan Young Ryu, Seoul, KR;
Woongjin Chemical Co., Ltd., Gyeongsangbuk-Do, KR;
Abstract
A selective membrane having a high fouling resistance. In one embodiment, the selective membrane is a composite polyamide reverse osmosis membrane in which a hydrophilic coating is applied to the polyamide layer of the membrane, the hydrophilic coating being made by covalently bonding a hydrophilic compound to residual acid chlorides of the polyamide membrane, the hydrophilic compound including (i) at least one reactive group that is adapted to covalently bond directly to the polyamide membrane, the at least one reactive group being at least one of a primary amine and a secondary amine; and (ii) at least one non-terminal hydroxyl group.