Detection of blockage in a porous member
US12360081B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2020 |
| Grant date | Jul 15, 2025 |
| Priority date | — |
| Expiry date | Jan 23, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/0289
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A gas sensor device including a housing, a porous member through which the analyte gas is transportable in operative connection with the a of the housing to separate an inner chamber of the housing from the ambient environment, a gas sensor responsive to the analyte gas within the inner chamber, a source of pressure waves positioned within the inner chamber and spaced from the porous member so that any pressure waves emitted from the source of pressure waves that are transmitted out of the inner chamber are transmitted through the porous member, a sensor responsive to pressure waves, and circuitry in operative connection with the sensor responsive to pressure waves to relate a phase of a measured response of the sensor responsive to pressure waves to a state of blockage in the porous member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.