ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,465,227, issued on Nov. 11, was assigned to WELL BEING DIGITAL Ltd. (Pak Shek Kok, Hong Kong).
"Device and method suitable for monitoring arterial blood in a body part" was invented by Ming Yip Wallace Wong (Hong Kong) and Chor Tin Ma (Hong Kong).
According to the abstract* released by the U.S. Patent & Trademark Office: "A wearable device suitable for monitoring blood in a body part may be implemented for instance in oximeters for detecting oxygen level in blood, which operates by contrasting the ratio of transmission of visible red light to transmission of infrared light. The ratio of the amount of absorbed red light to the amount of absorbed infrared light indicates the amount of ...