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:
Aug. 18, 2020
Filed:
Mar. 27, 2017
Applicant:
3m Innovative Properties Company, St. Paul, MN (US);
Inventor:
Glen O. Gregerson, Hudson, WI (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 46/00 (2006.01); B01D 46/10 (2006.01); B01D 46/52 (2006.01); B01D 39/00 (2006.01);
U.S. Cl.
CPC ...
B01D 46/0016 (2013.01); B01D 39/00 (2013.01); B01D 46/009 (2013.01); B01D 46/10 (2013.01); B01D 46/521 (2013.01); B01D 2275/205 (2013.01); B01D 2279/50 (2013.01);
Abstract
A framed air filter in which at least one portion of the frame is provided by a spiral-wrapped frame piece in which a terminal segment of the spiral-wrapped frame piece serves as a reinforcing strut.