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:
Jun. 01, 1999
Filed:
Oct. 10, 1997
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
A column for capillary chromatographic separations, for example high performance liquid chromatography, capillary electrochromatography, or supercritical chromatography, includes a column bed of packing material arranged in the inner bore of the column, and a retainer for retaining the column bed in the interior of the column, wherein the retainer includes regions in the interior of the column having radial dimensions which are different from that of the inner bore. Preferably, the column is a fused silica capillary whose protective layer is removed in a detection area so that sample substances separated in the column can be detected by means of a light source which transmits radiation through the column which is detected by a detector.