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:
Feb. 23, 2021
Filed:
Jun. 27, 2019
Applicant:
Korea Institute of Science and Technology, Seoul, KR;
Inventors:
Hyun Joo Lee, Seoul, KR;
Ung Lee, Seoul, KR;
Hong Gon Kim, Seoul, KR;
Shinhye Cho, Seoul, KR;
He Won Lee, Seoul, KR;
Assignee:
Korea Institute of Science and Technology, Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 487/08 (2006.01); B01D 53/14 (2006.01); B01D 53/50 (2006.01); B01D 53/78 (2006.01); C07C 215/40 (2006.01); C07D 241/04 (2006.01);
U.S. Cl.
CPC ...
B01D 53/1493 (2013.01); B01D 53/1481 (2013.01); B01D 53/507 (2013.01); B01D 53/78 (2013.01); C07C 215/40 (2013.01); C07D 241/04 (2013.01); C07D 487/08 (2013.01); B01D 2252/2041 (2013.01); B01D 2252/20431 (2013.01); B01D 2252/20447 (2013.01); B01D 2252/20484 (2013.01); B01D 2252/30 (2013.01);
Abstract
A sulfur dioxide absorbent that is an ionic liquid including a solvent; and a salt of a diamine compound that is substituted with a hydroxyl group and has a chemical formula 1 to 3 below dissolved in the solvent: