Patents by Inventor Adriann Howard Walters

Adriann Howard Walters has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Purification of DNA on Hydroxylated Silicas
    Patent number: 5693785
    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.
    Type: Grant
    Filed: November 17, 1994
    Date of Patent: December 2, 1997
    Assignee: Becton, Dickinson and Company
    Inventors: Daniel Lee Woodard, Adriann Howard Walters, James Arthur Down