ALEXANDRIA, Va., March 19 -- United States Patent no. 12,255,059, issued on March 18, was assigned to Roche Diagnostics Operations Inc. (Indianapolis).
"Method and device for multiple transition monitoring" was invented by Stefan Quint (Munich), Florian Schweinberger (Munich) and Benjamin Tiemann (Munich).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for multiple transition monitoring of at least one analyte in a sample using a quadrupole mass analyzer is provided and comprises at least one voltage application step, wherein a direct current (DC) voltage and a radio frequency (AC) voltage are applied between two pairs of electrodes of at least one mass filter of the analyzer, wherein the AC voltage h...