US Patent Issued to Micromass UK on Oct. 6 for "Mass spectral encoding" (British Inventors)

ALEXANDRIA, Va., Oct. 6 -- United States Patent no. 12,755,953, issued on Oct. 6, was assigned to Micromass UK Ltd. (Wilmslow, Great Britain).

"Mass spectral encoding" was invented by Martin Raymond Green (Bowdon, Great Britain) and Keith George Richardson (High Peak, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of mass spectrometry is disclosed in which one or more AC excitation voltage waveforms are applied to electrodes of an ion guide to radially excite and thereby attenuate ions having mass to charge ratios within respective mass to charge ratio windows. The AC excitation voltage waveforms are varied with time such that ions having different mass to charge ratios are attenuated ...