Patent · US Active

Apparatus and method for non-intrusive assessment of gas in packages

US8638439B2 · kind B2 · utility

4Cited by

5References

21Claims

0Family size

Assignee

GasPorOx AB · SE

Inventors

Sune Svanberg · Lund, SE
Anders Johnsson · Handen, SE
Märta Lewander · Lund, SE
Annika Olsson · Lund, SE

Key dates

Filing date	May 11, 2010
Grant date	Jan 28, 2014
Priority date	—
Expiry date	Jun 21, 2030

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.