Patent · US Active

Capacitive sensor and method of use

US10746683B2 · kind B2 · utility

7Cited by
3References
18Claims
0Family size

Assignee

Inventors

Key dates

Filing dateDec 10, 2014
Grant dateAug 18, 2020
Priority date—
Expiry dateDec 10, 2034

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01R27/2605
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

An analyte in a liquid sample is detected using a capacitive sensor having electrodes and a sensor surface, and a signal processor. The sample is dried to reduce its liquid content, and capacitive measurements are made after the drying and preferably also before the drying. The sample may include particles, and the analyte is part of or attached to the particles, and the particles provide a major part of the capacitance change compared to absence of particles. In another example the particles are degenerative and form an integral mass upon application of heat, enhancing the extent of capacitance change.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.