ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,531,222, issued on Jan. 20, was assigned to Micromass UK Ltd. (Wilmslow, Great Britain).

"Mass spectrometer calibration" was invented by Richard Denny (Newcaste-under-Lyme, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed herein is a method of processing mass spectral data comprising making direct calibration measurements to determine a calibration shift of the mass spectrometry instrument at a calibration time and determining a set of intrinsic ion species that persist across multiple acquisition periods. The direct calibration measurements are then used together with an expected variation in calibration shift as well as the set o...