ALEXANDRIA, Va., April 2 -- United States Patent no. 12,263,032, issued on April 1, was assigned to KONINKLIJKE PHILIPS N.V. (Eindhoven, Netherlands).

"Hemodynamic parameter estimation" was invented by Rohan Joshi (Eindhoven, Netherlands) and Ralph Wilhelm Christianus Gemma Rosa Wijshoff (Munstergeleen, Netherlands).

According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus and method for estimating one or more hemodynamic parameters such as cardiac output or stroke volume. Embodiments are based on the concept of incorporating information about vascular tone into hemodynamic parameter estimation to improve accuracy. More particularly, embodiments use a measurement of a time duration for a blood pulse to trav...