Patent ID: 9511091
Filing Date: 2016-12-06
CPC Classification: A61K,A61P,B01J,C01F,C01P,C02F,C09C,Y10T

Claim Text:
1. A method of treating hyperphosphatemia in a mammal, wherein the method comprises administering an effective amount of a composition comprising a rare earth compound selected from the group consisting of crystalline anhydrous La 2 O 2 CO 3 , crystalline anhydrous La 2 CO 5 , crystalline LaCO 3 OH, or a combination thereof, wherein the rare earth compound has a BET specific surface area of at least about 10 m 2 /g or more and exhibits a phosphate binding of at least 40% of an initial phosphate content after 10 minutes at an initial pH of about 3, at an amount of the rare earth compound 3 times the stoichiometric amount needed to react completely with the phosphate, and wherein the rare earth compound is in the form of particles with a porous structure.