ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,467,135, issued on Nov. 11, was assigned to Agilent Technologies Inc. (Santa Clara, Calif.).
"Resistive coating for a capillary" was invented by Richard G. Closser (Mountain View, Calif.) and Elizabeth Carr (Mountain View, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A coated capillary tube having a tunable resistance in an ion transfer device, including an inlet end in communication with an atmospheric-pressure ion source, an outlet end in communication with a vacuum region of a mass spectrometer, a body elongated along an axis from the inlet end to the outlet end, and an inside surface defining a bore having an inner diameter is disclosed. Th...