US Patent Issued on Sept. 15 for "Differential trapped ion mobility filter" (American, German Inventors)

ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,736,502, issued on Sept. 15.

"Differential trapped ion mobility filter" was invented by Karsten Michelmann (Bremen, Germany) and Melvin Park (Billerica, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a trapped ion mobility filter, a hybrid mass spectrometric system and a method for analyzing ions. The trapped ion mobility filter comprises an ion channel in which ions move along an axis between a first end, at which ions are introduced into said ion channel, and a second end. Two axial forces acting on the ions are provided, the first axial force being caused by an alternating axial electric field and having an effect on t...