Patents Assigned to Qiagen N.V.
  • Quaternary amine surfactant and methods of using same in isolation of RNA
    Patent number: 5985572
    Abstract: The present invention discloses a novel method for isolating RNA from biological samples using selected quaternary amine surfactants. The RNA is isolated quickly and in sufficient quantity and quality to permit analysis by methods including reverse transcriptase and polymerase chain reaction.
    Type: Grant
    Filed: February 23, 1998
    Date of Patent: November 16, 1999
    Assignee: Qiagen N.V.
    Inventor: Donald E. Macfarlane
  • Quaternary amine surfactants and methods of using same in isolation of RNA
    Patent number: 5728822
    Abstract: The present invention discloses a novel method for isolating RNA from biological samples, most particularly blood, using selected quaternary amine surfactants. The RNA is isolated quickly and in sufficient quantity and quality to permit analysis by methods including reverse transcriptase and polymerase chain reaction.
    Type: Grant
    Filed: September 7, 1995
    Date of Patent: March 17, 1998
    Assignee: Qiagen N.V.
    Inventor: Donald E. Macfarlane