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. 05, 1992
Filed:
Aug. 30, 1991
Robert R Holloway, Montara, CA (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
A polyacrylamide gel electrophoresis column includes a fused-silica tube, a polyacrylamide gel matrix and a polydimethysiloxane layer radially between and covalently attached to both the tube and the gel matrix. The method for forming this column involves covalently binding polyorganosiloxane to the inner wall of the tube, covalently attaching organosilane termini to the organosiloxane layer, and polymerizing acrylamide so as to incorporate the organosilane termini into the resulting polyacrylamide gel matrix. Buffer ions are then drawn into the column under an electric field of about 1000 volts per centimeter, and, at the same time, different reaction product ions are removed. The polyorganosiloxane layer stretches as the polyacrylamide shrinks during polymerization so that the organosiloxane is at least twice as thick as it would be without the gel matrix attached. The process yields a gel matrix which is securely attached to the tube, void-free, and under minimal mechanical stress. As a result, the column can withstand relatively high-voltage pre-electrophoresis and electrophoresis procedures.