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:
Feb. 03, 2026
Filed:
Jul. 22, 2020
Amogreentech Co., Ltd., Gimpo-si, KR;
Seoung Hoon Lee, Gimpo-si, KR;
Jun Keun Cho, Gimpo-si, KR;
Chan Kim, Gimpo-si, KR;
Kyung Su Kim, Gimpo-si, KR;
Seon Ho Jang, Gimpo-si, KR;
Yun Mi So, Gimpo-si, KR;
AMOGREENTECH CO., LTD., Gimpo-si, KR;
Abstract
Provided is a filter medium. A filter medium according to an embodiment of the present invention comprises: a first porous support body which has been electrostatically treated; and a nanofiber web which is disposed on one surface of the first support body and formed by accumulating nanofibers. Accordingly, excellent air filtering efficiency is obtained even for fine dust of PM 2.5 or below, and furthermore, deterioration in air filtering efficiency may be prevented or minimized even when usage is extended for a long period of time. Therefore, the filter medium and the composite filter according to an embodiment of the present invention can be widely utilized as media of filters for various air filtering devices.