ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,716,021, issued on Aug. 25, was assigned to DORF KETAL CHEMICALS FZE (Fujairah, United Arab Emirates).
"Aqueous modified acid compositions and methods of using the same" was invented by Clay Purdy (Medicine Hat, Canada), Markus Weissenberger (Calgary, Canada) and Cora Gordos (Calgary, Canada).
According to the abstract* released by the U.S. Patent & Trademark Office: "An aqueous modified or synthetic acid compositions comprising: an acid; and a first component comprising: an amine and a carboxylic acid group; wherein said first component and said acid are present in a molar ratio ranging from 1:3 to 1:15, more preferably from 1:3 to 1:12.5. Said acid compositions are useful in acidiz...