ALEXANDRIA, Va., July 3 -- United States Patent no. 12,344,574, issued on July 1, was assigned to TPAT IP (Arlington Heights, Ill.).
"Carbondisulfide derived zwitterions" was invented by Thomas Daly (Arlington Heights, Ill.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Amines and amine derivatives that improve the buffering range, and/or reduce the chelation and other negative interactions of the buffer and the system to be buffered. The reaction of amines or polyamines with various molecules to form polyamines with differing pKa's will extend the buffering range, derivatives that result in polyamines that have the same pKa yields a greater buffering capacity. Derivatives that result in zwitterionic buffers...