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:
May. 16, 2017
Filed:
Jun. 24, 2013
Postech Academy-industry Foundation, Pohang-si, KR;
Woon Bong Hwang, Pohang-si, KR;
Handong Jo, Seoul, KR;
Dong Seob Kim, Daegu, KR;
Yeong Ae Kim, Incheon, KR;
POSTECH ACADEMY-INDUSTRY FOUNDATION, Pohang-si, KR;
Abstract
A filter structure capable of efficiently separating water and oil using wettability is provided. The filter structure includes a first filter layer including a plurality of openings and a second filter layer including a plurality of openings and positioned so as to be overlapped with the first filter layer at a distance from each other. The first filter layer and the second filter layer include surfaces each having a dual-scale protrusion and depression structure as a combination of a micro-scale structure and a nano-scale structure, and thus have superhydrophilicity and selectively allow water from a water and oil mixture to pass therethrough.