US Patent Issued to Thermo Finnigan on Sept. 29 for "High-speed polarity switching dual conversion dynode ion detector for mass spectrometer" (California Inventors)

ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,749,666, issued on Sept. 29, was assigned to Thermo Finnigan LLC.

"High-speed polarity switching dual conversion dynode ion detector for mass spectrometer" was invented by Oleg Silivra (Milpitas, Calif.), Linfan Li (San Jose, Calif.) and Jae C. Schwartz (Gilroy, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A dual polarity ion detector comprises: an entrance electrode disposed to receive ions and maintained at a reference voltage, V0; a first dynode maintained at a voltage, V1, that is negative relative to V0; a second dynode maintained at a voltage, V2, that is positive relative to V0; a shielding electrode disposed between the first and secon...