ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,460,649, issued on Nov. 4, was assigned to VAPOTHERM INC. (Exeter, N.H.).

"Rotors for use in caustic environments" was invented by Jonathan Kohanski (Exeter, N.H.) and Jesse Bodwell (Exeter, N.H.).

According to the abstract* released by the U.S. Patent & Trademark Office: "There is provided a rotatable impeller assembly for pumping caustic fluid byproducts in a medical device. The assembly comprises a rotor having a rotor cup, and an impeller having a rotor contacting surface and impeller blades. The assembly further comprises a magnetic ring seated within the cup. The magnetic ring comprises a first contact surface that is configured to mate with an inner surface of the cup, and a se...