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:
Apr. 12, 2022
Filed:
Feb. 26, 2019
Applicant:
3m Innovative Properties Company, St. Paul, MN (US);
Inventors:
Himanshu Jasuja, Woodbury, MN (US);
Michael S. Wendland, North St. Paul, MN (US);
Michael W. Kobe, Lake Elmo, MN (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 20/32 (2006.01); B01D 53/02 (2006.01); B01J 20/18 (2006.01); B01J 20/28 (2006.01);
U.S. Cl.
CPC ...
B01J 20/3204 (2013.01); B01D 53/02 (2013.01); B01J 20/186 (2013.01); B01J 20/2808 (2013.01); B01J 20/28028 (2013.01); B01J 20/3251 (2013.01); B01J 20/3255 (2013.01); B01D 2251/2067 (2013.01); B01D 2253/1085 (2013.01); B01D 2253/25 (2013.01); B01D 2253/308 (2013.01); B01D 2259/4508 (2013.01);
Abstract
A sorbent suitable for sorbing aldehydes includes acidified zeolite impregnated with a urea-based compound, the acidified zeolite having a pore opening of 5 Å or greater and a molar ratio of silicate to aluminate of at least 1.1:1. The sorbent may be prepared by impregnating acidified zeolite with a solution of a urea-based compound, where the acidified zeolite includes proton counterions. The sorbent may be supported on a filter support to provide an air filter.