Patents by Inventor Nigel J. D. Cook

Nigel J. D. Cook 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).

  • Depth filter media
    Patent number: 5468382
    Abstract: A porous filter medium is formed by a pleated cylinder of a depth filter medium. An absolute rated inner filtration layer is arranged between upstream and downstream drainage layers. The depth filter medium is formed from a continuous sleeve. Additionally or alternatively at least the downstream drainage layer may be formed integrally with at least a part of an inner filtration layer. The material of the medium may be a fibrous mass of non-woven synthetic polymeric micro-fibres which are free of fibre-to-fibre bonding and are secured to each other by mechanical entanglement or intertwining, with the diameter of the fibrous structure varying across the medium.
    Type: Grant
    Filed: December 30, 1993
    Date of Patent: November 21, 1995
    Assignee: Pall Corporation
    Inventors: Nigel J. D. Cook, Kenneth R. Weight, Richard G. Gutman, Roger A. Buttery, Michael Grimes
  • Depth filter media
    Patent number: 5279731
    Abstract: A porous filter medium is formed by a pleated cylinder of a depth filter medium. An absolute rated inner filtration layer is arranged between upstream and downstream drainage layers. The depth filter medium is formed from a continuous sleeve. Additionally or alternatively at least the downstream drainage layer may be formed integrally with at least a part of an inner filtration layer. The material of the medium may be a fibrous mass of non-woven synthetic polymeric micro-fibers which are free of fiber-to-fiber bonding and are secured to each other by mechanical entanglement or intertwining, with the diameter of the fibrous structure varying across the medium.
    Type: Grant
    Filed: September 9, 1991
    Date of Patent: January 18, 1994
    Assignee: Pall Corporation
    Inventors: Nigel J. D. Cook, Kenneth R. Weight, Richard G. Gutman, Roger A. Buttery