ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,467,916, issued on Nov. 11, was assigned to Roche Diagnostics A/S (Copenhagen V, Denmark).

"Method for estimating arterial blood values" was invented by Bruno Graversen (Hadsund, Denmark) and Bjarne Flou (Hadsund, Denmark).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to method for providing values of measured and/or estimated arterial oxygenation (SO2AM, SO2AE, SpO2) based on measuring values of blood acid/base status in a venous blood sample (VBGM, VBGE). A conversion of the venous blood values is made by applying a mathematical model for deriving blood acid/base status and oxygenation status into estimated or predicted a...