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:
Jan. 03, 1995
Filed:
Nov. 24, 1993
Rajeev Dadoo, Stanford, CA (US);
Thomas T Lee, Palo Alto, CA (US);
Richard N Zare, Stanford, CA (US);
The Board of Trustees of the Leland Stanford Junior University, Stanford, CA (US);
Abstract
An electrophoretic or chromatographic separation capillary containing a fluid or gel defines a bore therein through which a sample migrates and separates into components. The tube has a side wall defining a passage therein. A substance is introduced into the capillary through the pasage by means of gravity, pressure or electroosmosis. The substance introduced changes the electroosmotic flow rate of the fluid in the capillary tube. The electroosmotic flow rate of the fluid in the capillary tube can be monitored by introducing a compound through the passage and detecting the concentration of the compound. Information on the flow rate can be used in a feedback action to control the flow rate, such as to keep it constant.