Patents by Inventor Yolanda Nieuwkerk

Yolanda Nieuwkerk 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).

  • Method for rapid purifiction of nucleic acids using layered ion-exchange membranes
    Patent number: 5438128
    Abstract: The present invention relates to a device method and kit for the convenient and rapid isolation and purification of nucleic acids, proteins, peptides, carbohydrates and oligosaccharides from heterogeneous biological samples. The device comprises a membrane assembly comprised of layers of microporous, polymeric membranes functionalized with ion-exchange groups. The device is reusable for like samples, relatively inexpensive compared to currently available separation techniques and is disposable, thereby avoiding cross-contamination of biological samples.
    Type: Grant
    Filed: February 7, 1992
    Date of Patent: August 1, 1995
    Assignee: Millipore Corporation
    Inventors: Yolanda Nieuwkerk, Robert J. Barry, Malcolm G. Pluskal, Richard A. Hamilton
  • Multi-filter analytical apparatus
    Patent number: 5223133
    Abstract: A filtration member transfer apparatus is provided for transferring one or a plurality of discrete reaction or isolation zones such as filtration membranes from a sample isolation step to an analytical apparatus. The transfer apparatus includes a template, preferably which is electrically conductive, having holes or depressions of a size, shape and position corresponding to the reaction or isolation zones. An electrically conductive adhesive is exposed in the holes or depressions of the template.
    Type: Grant
    Filed: November 21, 1991
    Date of Patent: June 29, 1993
    Assignee: Millipore Corporation
    Inventors: Phillip Clark, Frederick G. Bargoot, Yolanda Nieuwkerk, Aldo M. Pitt