ALEXANDRIA, Va., May 1 -- United States Patent no. 11,970,011, issued on April 30, was assigned to Hewlett-Packard Development Co. LP (Spring, Texas).
"Fluid-ejection element between-chamber fluid recirculation path" was invented by Jacob Lum (Corvallis, Ore.) and Alexander Govyadinov (Corvallis, Ore.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A fluid-ejection element of a fluid-ejection device includes a chamber layer having a pair of chambers fluidically disconnected from one another within the chamber layer. The fluid-ejection element includes a tophat layer over the chamber layer and fluidically connecting the chambers to define a fluid recirculation path between the chambers. The fluid-ejection elem...