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:
Apr. 30, 1996
Filed:
Feb. 28, 1995
Applicant:
Inventor:
Wesley D Cole, Palo Alto, CA (US);
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ;
U.S. Cl.
CPC ...
204453 ; 204455 ; 204459 ; 204604 ; 204605 ; 204610 ;
Abstract
A capillary electrophoresis method and apparatus for reducing dispersion of sample fractions are disclosed. The capillary tube in which the electrophoresis is performed has been flared, at least at its sample entrance end, to remove sharp corners which contribute to aberrations in the electric field distribution in a radial direction and result in differential migration of molecules depending on their proximity to the sharp corners. The flared tube, in contrast to a conventional tube, provides a more uniform electric field for electrophoresis and reduces undesired dispersion of the samples.