Sub-to super-ambient temperature programmable microfabricated gas chromatography column
US6706091B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2002 |
| Grant date | Mar 16, 2004 |
| Priority date | — |
| Expiry date | Jan 15, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/303
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sub- to super-ambient temperature programmable microfabricated gas chromatography column enables more efficient chemical separation of chemical analytes in a gas mixture by combining a thermoelectric cooler and temperature sensing on the microfabricated column. Sub-ambient temperature programming enables the efficient separation of volatile organic compounds and super-ambient temperature programming enables the elution of less volatile analytes within a reasonable time. The small heat capacity and thermal isolation of the microfabricated column improves the thermal time response and power consumption, both important factors for portable microanalytical systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.