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| Number | Title | Issue Date |
| 7260978 | Gas chromatography/mass spectrometry system A gas chromatography/mass spectrometry system includes two sample introduction parts, a gas chromatography part having two columns, a column oven for housing the two columns in a parallel configuration, an interface part through which an outlet end of each of the tw... | 08/28/2007 |
| 5892458 | Apparatus for recognition of exchangeable parts in analytical measuring instruments An apparatus for the recognition of exchangeable parts in an analytical measuring instrument or in an analytical measurement system with several analytical devices, which contain exchangeable parts has identification modules each attached to an exchangeab... | 04/06/1999 |
| 5547497 | Apparatus for gas chromatography A gas chromatograph system including a cold trap having two portions, a capillary tube and a porous layer open tubular (PLOT) column, for substantially simultaneously trapping lower and higher boiling point gasses. The capillary tube enables cold trapping... | 08/20/1996 |
| 5092155 | High speed detection of vapors of specific compounds A highly selective, sensitive, fast detection system and method are disclosed for detecting vapors of specific compounds in air. Vapors emanating from compounds such as explosives, or stripped from surfaces using heat and suction from a hand-held sample g... | 03/03/1992 |
| 3954608 | Method and device for rapid chromatographic separation A method of rapid chromatographic separation by exchange of substances between two fluid phases circulating in coutercurrent flow, at least one phase being liquid, consists in injecting the substances to be separated into one of the phases, in causing the... | 05/04/1976 |
