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. 23, 2004
Filed:
Nov. 18, 1999
Applicant:
Inventors:
Philippe Sauer, Hilden, DE;
Jie Kang, Mettman, DE;
Assignee:
QIAGEN GmbH, Hilden, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12P 1/934 ; C07H 2/100 ;
U.S. Cl.
CPC ...
C12P 1/934 ; C07H 2/100 ;
Abstract
A method for separating and/or isolating circular nucleic acids from a mixture having different species of nucleic acids other than circular nucleic acids wherein the mixture is treated under alkaline conditions at a pH>8 with a solid matrix consisting essentially of a silica material in presence of at least one chaotropic substance.