Patent · US Active

Piezoelectric resonator

US9762204B2 · kind B2 · utility

2Cited by

40References

19Claims

0Family size

Assignee

ATTANA AB · SE

Inventors

Teodor Aastrup · Stockholm, SE
Jan Smith · Stuvsta-Snättringe, SE
Henrik Anderson · Söderhamn, SE

Key dates

Filing date	Dec 19, 2011
Grant date	Sep 12, 2017
Priority date	—
Expiry date	Mar 28, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG01N2291/0422
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A piezoelectric resonator for use in a sensor arrangement for detecting or measuring an analyte in a medium, comprises a quartz crystal plate, having a first crystal surface and a second crystal surface. The first crystal surface is provided with a first electrode, which has a surface area of less than 15 mm2 and the second crystal surface is provided with a second electrode. The first electrode may have a rectangular surface shape. A flow cell for use in an apparatus for detecting or measuring an analyte in a medium, comprises walls that form a sensing chamber together with the resonator, and inlet and outlet openings for leading a fluid through the sensing chamber. A part of the resonator constitutes one of the walls of the sensing chamber and is arranged such that the first electrode is situated inside the sensing chamber.

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