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:
Dec. 02, 1997
Filed:
Nov. 17, 1994
Applicant:
Inventors:
Daniel Lee Woodard, Raleigh, NC (US);
Adriann Howard Walters, Baltimore, MD (US);
James Arthur Down, Cary, NC (US);
Assignee:
Becton, Dickinson and Company, Franklin Lakes, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12P / ; C07H / ; C07H / ;
U.S. Cl.
CPC ...
536 254 ; 435 911 ; 435975 ; 423335 ;
Abstract
Compositions and processes for isolation or purification of DNA are provided. The compositions are hydroxylated silica polymers produced by reacting silicon dioxide with an alkaline solution, followed by acidification. The hydroxylated silicas produced by this process can be used to bind DNA in aqueous solutions, without the need for binding reagents such as alcohols or chaotropes. The bound DNA may then be separated from the solution and eluted into water or a buffer by heating.