ALEXANDRIA, Va., June 17 -- United States Patent no. 12,311,676, issued on May 27, was assigned to Hewlett-Packard Development Co. LP (Spring, Texas).
"Active circuit elements on a membrane" was invented by Eric T. Martin (Corvallis, Ore.) and James R. Przybyla (Corvallis, Ore.).
According to the abstract* released by the U.S. Patent & Trademark Office: "According to examples, an apparatus may include a substrate having a fluid recirculation channel and a membrane adjacent to the fluid recirculation channel, in which the membrane is portion of the substrate having a smaller thickness than other portions of the substrate. The apparatus may also include a component layer, in which a fluid ejection chamber may be formed in the component laye...