ALEXANDRIA, Va., Feb. 12 -- United States Patent no. 12,222,047, issued on Feb. 11, was assigned to TECAN TRADING AG (Mannedorf, Switzerland).
"Rotary valve with encoder on rotor" was invented by John Greene (San Jose, Calif.), Michael John Kennedy (Los Gatos, Calif.), Torleif Ove Bjornson (Gilroy, Calif.) and Werner Halg (Mannedorf, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A rotary valve comprises a stator member with a stator face, the stator member having at least two stator channels for conducting a fluid and opening into the stator face; a rotor member with a rotor face facing and in contact with the stator face, the rotor member having a rotor channel in the rotor face, wherein the ro...