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:
May. 26, 1981
Filed:
Aug. 02, 1979
Applicant:
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01A / ;
U.S. Cl.
CPC ...
55 67 ; 55197 ; 7342 / ;
Abstract
A method and device for sample injections into a gas chromatographic column, wherein, in order to achieve sample trapping and solvent effects, the injection zone and an initial portion of the column are kept at a low temperature and then a quick temperature change is performed at the end of said initial portion. The cooling action is preferably performed by a cooling fluid acting outside the injector and column, while said temperature change is obtained by a suitable thermoregulation of the oven wherein said gas chromatographic column is housed.