US Patent Issued to Queen's University at Kingston on April 21 for "Anionic switchable hydrophilicity solvents" (Canadian Inventors)

ALEXANDRIA, Va., April 21 -- United States Patent no. 12,605,653, issued on April 21, was assigned to Queen's University at Kingston (Kingston, Canada).

"Anionic switchable hydrophilicity solvents" was invented by Philip G. Jessop (Camden East, Canada), Meghan McKeeman (North Gower, Canada), Igor Tadeu da Cunha (Kingston, Canada), Maedeh Ramezani (Amherstview, Canada) and Alana Lloyd-Smith (Vanessa, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "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 (CO2) effect...