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. 04, 2024
Filed:
May. 09, 2022
Applicant:
Iowa State University Research Foundation, Inc., Ames, IA (US);
Inventors:
Assignee:
Iowa State University Research Foundation, Inc., Ames, IA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 30/56 (2006.01); B01D 15/36 (2006.01); B01J 20/281 (2006.01); C07D 233/60 (2006.01); G01N 30/68 (2006.01); G01N 30/72 (2006.01); G01N 30/74 (2006.01); G01N 30/02 (2006.01);
U.S. Cl.
CPC ...
G01N 30/56 (2013.01); B01D 15/36 (2013.01); C07D 233/60 (2013.01); G01N 30/68 (2013.01); G01N 30/72 (2013.01); G01N 30/74 (2013.01); G01N 2030/025 (2013.01); G01N 2030/562 (2013.01);
Abstract
A gas chromatographic (GC) column using a zwitterionic compound and methods of use thereof are disclosed herein. The volatile free acids were observed to strongly retain on these zwitterionic compounds-based columns with excellent peak symmetry. By carefully tuning the structures of these zwitterionic compounds, different selectivity toward volatile free acids was demonstrated. These stationary phases possess a wide working range with thermal stabilities at higher temperatures.