ALEXANDRIA, Va., May 26 -- United States Patent no. 12,636,415, issued on May 26, was assigned to VANTIVE US HEALTHCARE LLC (Deerfield, Ill.) and VANTIVE HEALTH GMBH (Glattpark, Switzerland).

"System for removing uremic toxins in dialysis processes" was invented by Sujatha Karoor (Lake Forest, Ill.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of performing dialysis includes: recirculating a dialysis fluid from a patient or a dialyzer for at least two cycles, each cycle contacting the dialysis fluid first with a zirconium phosphate layer followed by at least one of a urease layer, a zirconium oxide layer, or a carbon layer; storing the recirculated dialysis fluid in a storage container; and transfe...