ALEXANDRIA, Va., July 15 -- United States Patent no. 12,660,791, issued on June 23, was assigned to Pioneer Pet Products LLC (Cedarburg, Wis.).
"Lightweight coated extruded granular absorbent" was invented by John M. Lipscomb (Cedarburg, Wis.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Method and coated lightweight granular absorbent formed of lightweight inner cores made of extruded pellets coated with powdered smectite, preferably bentonite, to form an outer sorbent smectite shell around each pellet producing lightweight sorbent granules where the pellets have sufficient water soluble binder to facilitate shell formation and clumping during sorbent use. When lightweight sorbent granules are wetted, clum...