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:
Jul. 03, 2018
Filed:
Oct. 15, 2014
Applicant:
Yupo Corporation, Tokyo, JP;
Inventors:
Assignee:
YUPO CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B03C 3/64 (2006.01); B03C 3/28 (2006.01); B01D 46/00 (2006.01); B01D 46/52 (2006.01); B01D 39/16 (2006.01); B03C 3/47 (2006.01); B03C 3/41 (2006.01);
U.S. Cl.
CPC ...
B03C 3/64 (2013.01); B01D 39/1623 (2013.01); B01D 39/1692 (2013.01); B01D 46/0032 (2013.01); B01D 46/526 (2013.01); B03C 3/28 (2013.01); B03C 3/41 (2013.01); B03C 3/47 (2013.01); B01D 2239/0435 (2013.01); B01D 2239/065 (2013.01); B01D 2239/069 (2013.01); B03C 2201/10 (2013.01);
Abstract
An object of the present invention is to provide a low pressure loss filter having a high dust- and dirt-collecting capability and excellent workability and sustainability of collecting capability. The filter of the present invention is a filter having air channels formed using an electret sheet; a porosity of the electret sheet being from 1 to 70%; an air channel cross-sectional ratio of the filter being from 10 to 99%; and a volume charge density of the filter being from 10 to 5000 nC/cm.