Patents by Inventor Helena M. Champion

Helena M. Champion 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).

  • Multiwell membrane filtration apparatus
    Patent number: 4734192
    Abstract: A multiwell filtration apparatus for the assay of microliter quantities is provided which prevents fluid loss by capillary action and gravity flow through a microporous membrane or ultrafilter. The filtration apparatus is particularly advantageous in assays requiring maintenance of fluid within the reaction wells for substantial time periods and in small sample volume assays in the range of 100 microliter volumes.
    Type: Grant
    Filed: June 21, 1985
    Date of Patent: March 29, 1988
    Assignee: Millipore Corporation
    Inventors: Helena M. Champion, Joseph J. Pierog, Joseph E. Peters