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. 06, 2001
Filed:
Jul. 21, 2000
Applicant:
Inventors:
Michelle D. Butler, San Francisco, CA (US);
Darien L. Cohen, Oakland, CA (US);
David Kahn, Foster City, CA (US);
Marjorie E. Winkler, Burlingame, CA (US);
Assignee:
Genentech, Inc., South San Francisco, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C12N 1/510 ;
U.S. Cl.
CPC ...
C12N 1/510 ;
Abstract
A process is described for purifying plasmid DNA from prokaryotic cells comprised thereof. This process comprises the steps of: (a) digesting the cells; (b) incubating the cells for about 4 to 24 hours to effect lysis and solubilization thereof, without effecting enzymatic digestion of RNA; (c) removing lysate contaminants from the cells to provide a plasmid DNA solution; (d) filtering the solution through a tangential flow filtration device to obtain a retentate containing the plasmid DNA; and (e) collecting the retentate.