US Patent Issued to USTAV ORGANICKE CHEMIE A BIOCHEMIE AV CR, V.V.I. on Feb. 4 for "Compounds for chromatographic separation of rare earth elements and s-, p-, d-metals, method of separation, and use thereof" (Czech Inventor)

ALEXANDRIA, Va., Feb. 5 -- United States Patent no. 12,215,064, issued on Feb. 4, was assigned to USTAV ORGANICKE CHEMIE A BIOCHEMIE AV CR, V.V.I. (Prague).

"Compounds for chromatographic separation of rare earth elements and s-, p-, d-metals, method of separation, and use thereof" was invented by Miloslav Polasek (Prague).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to compounds of general formula (I), wherein -X is selected from a group consisting of H; C1 to C6, alkyl; halogen (F, Cl, Br or I); Y is selected from a group consisting of nitrogen; N-oxide; Z1, Z2, Zm, wherein m is 1 or 2, are independently selected from the group consisting of -CH2-CH2- and -CH2-CH2-CH2; A, Am,...