ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,611, issued on April 21, was assigned to Halliburton Energy Services Inc. (Houston).

"Chemical species based selective dilution for analysis of a sub-formation sample" was invented by Mathew Dennis Rowe (Houston).

According to the abstract* released by the U.S. Patent & Trademark Office: "Embodiments of a gas chromatography system and method are disclosed. The method includes injecting a gas sample into a first gas separation device that includes at least one first hydrocarbon identified for analysis; determining that a concentration level of the first hydrocarbon needs to be reduced; diluting the gas sample with a first amount of a dilutant from a first dilutant mass controller...