Allena Pharmaceuticals Granted U.S. Patent Titled ‘Compositions, methods, and devices for dialysis’
https://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.htm&r=6548&f=G&l=50&d=PTXT&p=131&S1=20210803&OS=20210803&RS=20210803