Patents by Inventor Neil John Walker

Neil John Walker 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).

  • Chromatography columns and their operation
    Patent number: 8715499
    Abstract: A method of operating chromatography column apparatus comprising a column tube (101) and first and second discrete end cell structures, associated with the respective ends of the column tube and positionable to close off the column tube and define therein a column space for retaining chromatography medium in use of the apparatus. The first end cell portion comprises a piston portion (106) fitting slidably in the column tube. The column tube and the second end cell structure are separated to provide an access spacing between them. The piston portion (106) of the first end cell structure is advanced through the column tube to expose it at the open second end of the column tube, for maintenance of the piston portion thus exposed. Corresponding chromatography apparatus is another aspect of the disclosure.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: May 6, 2014
    Assignee: Pall Corporation
    Inventors: Gerald James Spencer, Neil John Walker, John Mackay Scott
  • CHROMATOGRAPHY COLUMNS AND THEIR OPERAITON
    Publication number: 20100000928
    Abstract: A method of operating chromatography column apparatus comprising a column tube (101) and first and second discrete end cell structures, associated with the respective ends of the column tube and positionable to close off the column tube and define therein a column space for retaining chromatography medium in use of the apparatus. The first end cell portion comprises a piston portion (106) fitting slidably in the column tube. The column tube and the second end cell structure are separated to provide an access spacing between them. The piston portion (106) of the first end cell structure is advanced through the column tube to expose it at the open second end of the column tube, for maintenance of the piston portion thus exposed. Corresponding chromatography apparatus is another aspect of the disclosure.
    Type: Application
    Filed: September 14, 2009
    Publication date: January 7, 2010
    Applicant: Pall Euroflow Limited
    Inventors: Gerald James Spencer, Neil John Walker, John Mackay Scott
  • Chromatography columns and their operation
    Patent number: 7604747
    Abstract: A method of operating chromatography column apparatus comprising a column tube (101) and first and second discrete end cell structures, associated with the respective ends of the column tube and positionable to close off the column tube and define therein a column space for retaining chromatography medium in use of the apparatus. The first end cell portion comprises a piston portion (106) fitting slidably in the column tube. The column tube and the second end cell structure are separated to provide an access spacing between them. The piston portion (106) of the first end cell structure is advanced through the column tube to expose it at the open second end of the column tube, for maintenance of the piston portion thus exposed. Corresponding chromatography apparatus is another aspect of the disclosure.
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: October 20, 2009
    Assignee: Pall Euroflow Limited
    Inventors: Gerald James Spencer, Neil John Walker, John Mackay Scott