The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 11, 2025
Filed:
Mar. 22, 2019
Well Being Digital Limited, Pak Shek Kok, HK;
Ming Yip Wallace Wong, Pak Shek Kok, HK;
WELL BEING DIGITAL LIMITED, New Territories, HK;
Abstract
A method of monitoring an analyte in blood, particularly glycated-haemoglobin (HbA1c or HgbA1c) using two photoplethysmocharty (PPG) sensors, which are worn on the body of a subject. Each photoplethysmocharty sensor observes blood of the subject in a different wavelength. One of the wavelengths monitors glycated-haemoglobin. The other one of the wavelengths monitors the body of blood in general. The shapes of the pulses obtained by each of the PPG sensor from the subject are used to adjust the intensity of the light emitted by the PPG sensors into the subject. If on adjustment of the light intensity, the shapes of the pulses become similar, the size of the pulses can be used to provide quasi-quantification of the analyte.