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. 21, 2026
Filed:
Mar. 07, 2023
Queen's University AT Kingston, Kingston, CA;
Philip G. Jessop, Camden East, CA;
Meghan Mckeeman, North Gower, CA;
Igor Tadeu Da Cunha, Kingston, CA;
Maedeh Ramezani, Amherstview, CA;
Alana Lloyd-Smith, Vanessa, CA;
Queen's University at Kingston, Kingston, CA;
Abstract
Anionic switchable hydrophilicity solvents (ASHS) that can be reversibly converted between hydrophobic and hydrophilic forms are described. The ASHS comprise a carboxylic acid, a water-soluble base, water, and addition and removal of an acidic gas (CO) effects the conversion between the hydrophobic and hydrophilic forms. A system and method for forming the ASHS are described, as well as applications utilizing the ASHS, including a method for separating a selected substance from a mixture, a method of removing gas from polymeric foam, and a method of extracting a hydrophobic material from a solid that is at least partially coated by the hydrophobic material.