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:
Feb. 05, 2013
Filed:
Aug. 04, 2010
Kyu-tae Yoo, Yongin-si, KR;
Seong-jin Kim, Minneapolis, MN (US);
Eui-sik Yoon, Minneapolis, MN (US);
Kyu-tae Yoo, Yongin-si, KR;
Seong-jin Kim, Minneapolis, MN (US);
Eui-sik Yoon, Minneapolis, MN (US);
Samsung Electronics Co., Ltd., , KR;
Regents of the University of Minnesota, Minneapolis, MN (US);
Abstract
An apparatus and method for detecting ionic materials includes a sensing electrode which contacts a liquid sample and detects a sensing voltage corresponding to a surface potential which is changed by a concentration of ionic materials in the liquid sample, a first switching transistor having a first terminal connected to the sensing electrode and a second terminal connected to a first node, a second switching transistor having a first terminal connected to a reset voltage and a second terminal connected to the first node, and a sensing transistor having a gate connected to the first node.