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:
May. 11, 2021
Filed:
May. 18, 2020
Applicant:
Graver Technologies Llc, Glasgow, DE (US);
Inventors:
Kartik Potukuchi, West Henrietta, NY (US);
Robert W. Rezuke, North Grafton, MA (US);
Assignee:
Graver Technologies LLC, Glasgow, DE (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01J 20/22 (2006.01); B01D 53/72 (2006.01); B01D 53/02 (2006.01); B01D 53/04 (2006.01); B01D 53/92 (2006.01); B01J 20/20 (2006.01); B01J 20/28 (2006.01); B01J 20/32 (2006.01);
U.S. Cl.
CPC ...
B01J 20/22 (2013.01); B01D 53/02 (2013.01); B01D 53/04 (2013.01); B01D 53/72 (2013.01); B01D 53/92 (2013.01); B01J 20/20 (2013.01); B01J 20/28035 (2013.01); B01J 20/3204 (2013.01); B01D 2252/20431 (2013.01); B01D 2252/20489 (2013.01); B01D 2253/102 (2013.01); B01D 2253/25 (2013.01); B01D 2257/302 (2013.01); B01D 2257/304 (2013.01); B01D 2257/404 (2013.01); B01D 2257/70 (2013.01);
Abstract
A filter composition effective in reacting with airborne or gaseous organic impurities, such as formaldehyde. The filter composition is formed from a filter substrate, such as for example, a fibrous web or extruded carbon block, treated with tris-(hydroxymethyl) aminomethane. The unexpected result of this combination is a longer lasting filter capable of adsorbing organic airborne impurities for a much longer period of time than an untreated filter media of the same type. The removal of formaldehyde is presented as an illustrious example.