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:
Sep. 26, 1995
Filed:
Oct. 29, 1993
Applicant:
Inventor:
Chao Yan, Arlington, VA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
2041801 ; 2041828 ; 2042 / ; 210656 ; 53473 ;
Abstract
Capillary columns are packed using electroosmotic flow (EOF) induced by an electrical double layer on the internal wall of a fused silica capillary and the electrophoretic mobility of positively-charged or negatively-charged particles of packing material. Electrokinetic packing is also applicable to uncharged packing particles. With this electrokinetic method several capillaries can be packed simultaneously. Electrokinetically packed capillary columns are useful for the separation of test mixtures and of pharmaceuticals in both electrochromatography and micro-HPLC.