ALEXANDRIA, Va., July 16 -- United States Patent no. 12,667,285, issued on June 30, was assigned to KardiaMetrix LLC (Alpharetta, Ga.).
"Generalized pulse oximetry method for persons of all skin pigmentations" was invented by Grant Hocking (Alpharetta, Ga.).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention is an in vivo non-invasive method and apparatus for the measurement of the arterial blood oxygen saturation status of a patient, the method is a generalized improvement on conventional pulse oximetry to correct for its skin pigmentation bias and significant errors in oxygen saturation assessment in the presence of methemoglobin. The method requires an additional red light sensor with an i...