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:
Oct. 31, 1995
Filed:
Sep. 29, 1993
Chia-Hui Shieh, Irvine, CA (US);
Beckman Instruments, Inc., Fullerton, CA (US);
Abstract
Coated capillary electrophoresis columns and methods for their use in electrophoretic separations are disclosed. The coated capillary columns include a length of tubing having an interior surface coated with at least one crosslinked organic multi-valent ionic compound capable of ionic interaction with charged chemical functionalities on the tubing interior surface. Exemplary columns are prepared by crosslinking a multi-functional amine compound with a diexpoxide, alkylating the crosslinked multi-functional amine compound to form a crosslinked quaternary ammonium compound, and then contacting the interior surface of capillary tubing with the crosslinked quaternary ammonium compound.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile