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:
Aug. 29, 1989
Filed:
Feb. 26, 1988
Applicant:
Inventors:
Friedhelm Mueller, Linkenheim-Hochstetten, DE;
Horst Straub, Karlsruhe, DE;
Assignee:
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
55386 ; 55 67 ; 285911 ; 285917 ;
Abstract
A connecting capillary tube is arranged in a branch coupling and is shorter than the guide bores into which separation columns are introduced. The ends of the separation columns slide automatically over the ends of the connecting tube. The connecting tube is sealed with metal disks instead of graphite ones. The flush gas conduits are so arranged that the dead spaces can be well flooded, reducing adsorption of sample and increasing the performance of the gas chromatograph.