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. 20, 2013
Filed:
Feb. 04, 2009
Applicants:
Rong Wang, Singapore, SG;
David Tee Liang, Singapore, SG;
Joo Hwa Tay, Singapore, SG;
Inventors:
Assignee:
Nanyang Technological University, Singapore, SG;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01D 5/24 (2006.01); D01F 1/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a method for the production of a poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) asymmetric hollow fiber membrane. The invention comprises preparing a dope solution of PVDF-HFP with an additive of lithium chloride or glycerol dissolved in a solvent such as N-methylpyrollidone (NMP). The dope solution is spun to form a PVDF-HFP asymmetric hollow fiber membrane.