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. 14, 2026
Filed:
Sep. 25, 2019
Applicant:
Daikin Industries, Ltd., Osaka, JP;
Inventors:
Yoshiyuki Shibuya, Osaka, JP;
Kunihiko Inui, Osaka, JP;
Seigo Yamamoto, Osaka, JP;
Hideyuki Kiyotani, Osaka, JP;
Toshihiro Kanda, Osaka, JP;
Assignee:
DAIKIN INDUSTRIES, LTD., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 39/16 (2006.01); B01D 46/00 (2022.01); B01D 46/52 (2006.01);
U.S. Cl.
CPC ...
B01D 39/1692 (2013.01); B01D 46/0001 (2013.01); B01D 46/522 (2013.01); B01D 2239/065 (2013.01); B01D 2239/10 (2013.01); B01D 2239/1216 (2013.01); B01D 2239/1241 (2013.01); B01D 2239/1291 (2013.01);
Abstract
An air filter medium having a large thickness and a low filling factor, a filter pack, an air filter unit, and methods for producing the air filter medium, the filter pack, and the air filter unit are provided. The air filter medium includes a fluororesin porous film having a portion with a filling factor of 3.5% or less, and the portion with a filling factor of 3.5% or less has a thickness of 45 μm or more.