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. 28, 2002
Filed:
Jan. 24, 2001
Gary Valaskovic, Cambridge, MA (US);
Emily E. Ehrenfeld, Cambridge, MA (US);
New Objectives, Inc., Cambridge, MA (US);
Abstract
Method for loading a capillary channel with a packing material to form a capillary column which comprises placing a first frit on a first capillary channel, forcing a slurry of a solid packing material in a liquid through said first channel so that the liquid, but not the solid packing material, passes through the frit and out of the capillary channel, to form a first bed of packing material within said first capillary channel and adjacent to the frit; thereby forming a pre-pack column, then removing the frit and joining the pre-pack column to an empty second capillary channel and attaching a second frit to the end of said second channel, then forcing a liquid into the end of pre-pack column, so that the liquid passes through the pre-pack column, mobilizing the packing therein and carrying it into the second capillary channel, where the liquid, but not the packing material, passes through the frit and out of said second channel, whereby said packing forms a packed bed in the second column; then separating the packed capillary column from the pre-pack column.