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:
Nov. 16, 1993
Filed:
Feb. 07, 1992
Jurgen A Lux, Niederkirchen, CA (US);
Sally A Swedberg, Waldbronn, CA (US);
James E Young, La Honda, CA (US);
Douglass McManigill, Palo Alto, CA (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
An electrophoretic apparatus that is useful for separation of analytes, such as proteins, comprises a capillary tube that has an interfacial layer bonded to reduce interactions between the bore and analytes during electroosmotic flow through the capillary, and an electrically modified media carried by or contacting a capillary wall outward from the bore. The modified media can be an electrically resistive coating or an electrically conductive coating. Together with appropriate power supply configurations, the electrically modified media permits the application of a voltage gradient that is transverse to the electrophoretic gradient, and provides electroosmotic flow control in cooperation with the interfacial layer.