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. 08, 2021
Filed:
Nov. 17, 2016
Applicant:
3m Innovative Properties Company, St. Paul, MN (US);
Inventors:
Liang Cheng, Shanghai, CN;
Andrew R. Fox, Oakdale, MN (US);
Himanshu Jasuja, St. Paul, MN (US);
Zhiqun Zhang, Roseville, MN (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 46/00 (2006.01); B01D 53/00 (2006.01); B01D 46/10 (2006.01); B01D 29/13 (2006.01); B01D 46/52 (2006.01); B01D 35/143 (2006.01); B01D 53/04 (2006.01);
U.S. Cl.
CPC ...
B01D 46/0086 (2013.01); B01D 29/13 (2013.01); B01D 35/143 (2013.01); B01D 46/0023 (2013.01); B01D 46/0032 (2013.01); B01D 46/0036 (2013.01); B01D 46/10 (2013.01); B01D 46/521 (2013.01); B01D 53/04 (2013.01);
Abstract
An air filter () comprises an air filter media () with a sorbent-free area () that provides a visual filter life indicator zone () and with a sorbent-loaded area () that provides a visual reference zone ().