Patents Assigned to WHATMAN GMBH
  • Patent number: 9707523
    Abstract: A membrane filter 26 is disclosed comprising cellulous material 23 allowing the transition of fluid therethrough, and, in a substantially dry state, said membrane comprising also a salt of deoxycholic acid. Optionally, the air side of the membrane (the side facing away from the screen or belt used to manufacture the membrane) faces the sample fluid during use of the membrane. A method of manufacture of the membrane material is disclosed also, employing deoxycholic acid as a surfactant, to improve the recovery rate of the membrane filter in use.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: July 18, 2017
    Assignee: Whatman GmbH
    Inventors: Klaus Hochleitner, Suzana Kiel
  • Publication number: 20150027945
    Abstract: A membrane filter 26 is disclosed comprising cellulous material 23 allowing the transition of fluid therethrough, and, in a substantially dry state, said membrane comprising also a salt of deoxycholic acid. Optionally, the air side of the membrane (the side facing away from the screen or belt used to manufacture the membrane) faces the sample fluid during use of the membrane. A method of manufacture of the membrane material is disclosed also, employing deoxycholic acid as a surfactant, to improve the recovery rate of the membrane filter in use.
    Type: Application
    Filed: February 22, 2013
    Publication date: January 29, 2015
    Applicant: WHATMAN GMBH
    Inventors: Klaus Hochleitner, Suzana Kiel