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:
Dec. 02, 2025
Filed:
Jun. 27, 2023
International Business Machines Corporation, Armonk, NY (US);
Frank Robert Libsch, White Plains, NY (US);
Venkat K. Balagurusamy, Airmont, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An impedance sensing structure is provided and includes a dielectric layer, a spiral electrode pair forming a dual spiral channel on the dielectric layer and having an inlet portion at a central region of the dual spiral channel and an outlet portion at an end of the dual spiral channel, inlet and outlet elements and sensing circuitry. The inlet and outlet elements are coupled with the inlet and outlet portions, respectively, for directing fluid or gas to flow through the dual spiral channel. The sensing circuitry is electrically connected with the spiral electrode pair and configured to sense the particles in the fluid or gas in accordance with an impedance of the spiral electrode pair and the fluid or gas flowing through the dual spiral channel.