ALEXANDRIA, Va., March 31 -- United States Patent no. 12,588,842, issued on March 31, was assigned to Analog Devices International UnLtd. Co. (Limerick, Ireland).

"Systems and methods for measuring oxygen in a patient's bloodstream" was invented by John Jude O'Donnell (Quin, Ireland), Colin G. Lyden (Baltimore, Ireland) and Michael C.W. Coln (Lexington, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A photometry device can include a first LED to emit light to a target in response to a first current through the first LED, a second LED to emit light to the target in response to a second current through the second LED, and an inductor, coupled to the first and second LEDs, to store energy associated with ...