Apparatus and method for non-intrusive assessment of gas in packages
US10324064B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2017 |
| Grant date | Jun 18, 2019 |
| Priority date | — |
| Expiry date | Nov 27, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/021
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus are disclosed for assessment of a sealed package. Light is emitted from a narrow-band laser source towards said package from outside of said package. An absorption signal of said light scattered in said package is measured, wherein said absorption is caused by said at least one gas when said light is scattered and travels in said sealed package. Measuring is made outside of said package, whereby said assessment is non-intrusive with regard to said package. It is determined if a deviation exists from a predetermined, expected gas composition and/or concentration of said at least one gas within said sealed package based on said measured absorption signal. Thus sealing of said package for said gas is detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.