Patents Assigned to Finnigan MAT Limited
  • Sample holder for mass spectrometer
    Patent number: 5859431
    Abstract: A sample holder (1) for use in mass spectrometry comprises a plate having a flat (5), which flat includes a first region having a smooth surface surrounding a second region having a rough surface (7). The second region defines the location for loading a sample.
    Type: Grant
    Filed: December 21, 1993
    Date of Patent: January 12, 1999
    Assignee: Finnigan Mat Limited
    Inventors: John Stanley Cotrell, Kuldip Kaur Mock
  • Method of preparing a sample for analysis
    Patent number: 5308978
    Abstract: A sample for analysis by Laser Desorption Mass Spectrometry is prepared by dissolving the sample material in a solvent and applying the solution to a matrix material. The matrix material is applied to a target for a mass spectrometer prior to the application of the sample solution thereto.
    Type: Grant
    Filed: February 20, 1992
    Date of Patent: May 3, 1994
    Assignee: Finnigan Mat Limited
    Inventors: John S. Cottrell, Kuldip K. Mock
  • Method of preparing a sample for analysis by laser desorption mass spectrometry
    Patent number: 5281538
    Abstract: A sample for analysis by Laser Desorption Mass Spectrometry is prepared by dissolving the sample material in a solvent and applying the solution to a matrix material applied to a target for a mass spectrometer. The matrix material is selected from the group consisting of (i) cis-Cinnamic Acid with the aromatic ring substituted by one or more groups which possess an electron pair on the atom adjacent to the ring; (ii) trans-Cinnamic Acid with the aromatic ring substituted by one or more groups which possess an electron pair on the atom adjacent to the ring; (iii) Benzoic Acid, with one or more substituent groups as described in (i); and (iv) Coumarin, with one or more substituent groups as described in (i).
    Type: Grant
    Filed: February 20, 1992
    Date of Patent: January 25, 1994
    Assignee: Finnigan Mat Limited
    Inventors: John S. Cottrell, Kuldip K. Mock
  • Method of preparing a sample for analysis
    Patent number: 5260571
    Abstract: A sample for analysis by Laser Desorption Mass Spectrometry is prepared by applying a substrate material to a target for the mass spectrometer, dissolving the sample material in a solvent and applying the solution to a substrate material on the target to be absorbed thereby. A matrix material is also dissolved in a solvent and this matrix material in solution is applied to the substrate material on the target. The solvent used to dissolve the matrix material is chosen such as to release the sample material from the substrate so that, after evaporation of the matrix material, there is provided on the substrate material an intimately mixed deposit of sample material and matrix material.
    Type: Grant
    Filed: February 20, 1992
    Date of Patent: November 9, 1993
    Assignee: Finnigan MAT Limited
    Inventors: John S. Cottrell, Kuldip K. Mock