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:
Jun. 03, 2014
Filed:
Aug. 17, 2009
Applicants:
Joon-khee Yoon, Seoul, KR;
Moo-seok Lee, Seoul, KR;
Inventors:
Joon-Khee Yoon, Seoul, KR;
Moo-Seok Lee, Seoul, KR;
Assignee:
Kolon Industries Inc., Kwacheon-Si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 49/00 (2006.01); B01D 71/36 (2006.01); B01D 39/14 (2006.01); B01D 67/00 (2006.01); B01D 71/32 (2006.01); B01D 69/02 (2006.01); D01F 6/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed is a porous membrane with high tensile strength, good elongation at break, and good water permeability, and a method for manufacturing the same. The porous membrane comprises a bead structure including plural spherical crystallites, wherein macro voids isolated from one another with the plural spherical crystallites are formed in an outer surface side of the porous membrane.