Patents by Inventor Judith Marjorie Anderson

Judith Marjorie Anderson 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).

  • Methods and apparatus for monitoring the growth of microorganisms in liquid culture
    Patent number: 5863752
    Abstract: A method of monitoring the growth of microorganisms in liquid culture involving the detection of pressure change in a gas-tight container such as a blood culture bottle incorporating a flexible diaphragm (septum) by detecting displacement of the septum, is characterised by the position or conformation of the diaphragm being repeatedly sensed using a distance-measuring means, such as a laser, preferably capable of detecting a variation in the position or conformation of the diaphragm to an accuracy of 200.mu. or better, with a portion of the container adjacent the diaphragm conveniently being used as a reference to detect any relative positional or conformational change of the diaphragm. Preferably the laser repeatedly scans a plurality of containers mounted in a holder such as a flat bed or a carousel.
    Type: Grant
    Filed: June 2, 1993
    Date of Patent: January 26, 1999
    Assignee: Oxoid Limited
    Inventors: Nigel Timothy Court, Richard Paul Hayes-Pankhurst, Neil Laurence Evans, Judith Marjorie Anderson, Roy Holbrook, Peter Richard Stephenson, Arthur Maurice Weightman
  • Containers
    Patent number: 5707823
    Abstract: A gas-tight container incorporates a flexible diaphragm made of chlor-butyl rubber. The container finds particular use in systems for monitoring growth of microorganisms.
    Type: Grant
    Filed: December 12, 1995
    Date of Patent: January 13, 1998
    Assignee: Oxoid Limited
    Inventors: Anthony Hugh Carr, Judith Marjorie Anderson, Roy Holbrook