The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 21, 2009
Filed:
Mar. 06, 2006
Mark A. Gregory, Lafayette, IN (US);
Garth E. Patterson, Brookston, IN (US);
Anthony J. Cochran, Lafayette, IN (US);
Jason L. Springston, Carmel, IN (US);
Mark A. Gregory, Lafayette, IN (US);
Garth E. Patterson, Brookston, IN (US);
Anthony J. Cochran, Lafayette, IN (US);
Jason L. Springston, Carmel, IN (US);
Griffin Analytical Technologies, West Lafayette, IN (US);
Abstract
The present invention discloses a gas chromatograph assembly. In one implementation, the assembly includes a sample injector and a guard column assembly. The guard column assembly includes a guard column connected to and downstream of the sample injector; a jacket with low thermal mass surrounding the guard column; a temperature controlled heater connected to the jacket to control the temperature of the jacket and thereby the temperature of the guard column; and an insulating housing surrounding the jacket. An analytical column is connected to and downstream of the guard column.