ALEXANDRIA, Va., June 4 -- United States Patent no. 12,320,791, issued on June 3, was assigned to Picarro Inc. (Santa Clara, Calif.).

"Creating mass flow parity in a variant multi-channel sampling system" was invented by Jeffrey Michael Headrick (Alamo, Calif.), Wei Jian Chin (Sunnyvale, Calif.) and Chris W. Rella (Sunnyvale, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An equal mixture of gas flows from multiple inputs is provided to gas analysis instrumentation, despite the unequal gas flow properties of the inputs often seen in practice. E.g., due to unequal input sample line lengths. We provide gas flow symmetry into a gas manifold that provides the output(s) to the gas analysis instrument(s). S...