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:
Jun. 10, 2025
Filed:
Nov. 07, 2019
Leadway (Hk) Limited, Hong Kong, CN;
Yu Long Sun, Zhejiang, CN;
Xin Liang Xiang, Zhejiang, CN;
Yan Cheng, Zhejiang, CN;
Li Zhang, Zhejiang, CN;
LEADWAY (HK) LIMITED, Hong Kong, CN;
Abstract
Provided are a potentiometric biosensor () and a method for detecting urea concentration in a sample. The potentiometric biosensor () comprises an indication electrode () and a reference electrode (). A second reaction reagent on the indication electrode () comprises a urease but does not comprise an electron transporter. A first reaction reagent on the reference electrode () comprises an electron transporter but does not comprise a urease. In the case where no external voltage is applied, after a blood sample has been added, the urease catalyzes the reaction of urea in the sample, thereby causing a potential difference between the indication electrode () and the reference electrode (). Furthermore, the potential difference between the indication electrode () and the reference electrode () is in a linear relationship with the urea concentration in the sample, and the urea concentration in the sample can be calculated according to such linear relationship.