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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.:

US 11353435 B1

PDFFull Text
Date of Patent:
Jun. 07, 2022

Filed:

Dec. 21, 2018

Zwitterionic compounds as gas chromatographic column stationary phases

Applicant:

Iowa State University Research Foundation, Inc., Ames, IA (US);

Inventors:

Jared L. Anderson, Ames, IA (US);

Kosuke Kuroda, Kanazawa, JP;

He Nan, Ames, IA (US);

Assignee:

Iowa State University Research Foundation, Inc., Ames, IA (US);

Attorney:

McKee, Voorhees & Sease, PLC

Primary Examiner:

John M Mauro

Int. Cl.
CPC ...
G01N 30/56 (2006.01); G01N 30/68 (2006.01); G01N 30/74 (2006.01); G01N 30/72 (2006.01); C07D 233/60 (2006.01); B01D 15/36 (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.

Find Patent Forward Citations

Anderson, Jared. (2022). Zwitterionic compounds as gas chromatographic column stationary phases (U.S. Patent No. 11353435). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11353435

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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