| Patent | Date |
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Method of operating quadrupoles with added multipole fields to provide mass analysis in islands of stability
Grant 7,709,786 - Konenkov , et al. May 4, 2 | 2010-05-04 |
Linear quadrupoles with added hexapole fields and method of building and operating same
Grant 7,541,579 - Konenkov , et al. June 2, 2 | 2009-06-02 |
High throughput ion source with multiple ion sprayers and ion lenses
Grant 7,399,961 - Chen , et al. July 15, 2 | 2008-07-15 |
System and method for detecting cheque fraud
Grant 7,366,339 - Douglas , et al. April 29, 2 | 2008-04-29 |
Method of operating quadrupoles with added multipole fields to provide mass analysis in islands of stability
App 20070295900 - Konenkov; Nikolai ; et al. | 2007-12-27 |
Linear quadrupoles with added hexapole fields and method of building and operating same
App 20070272853 - Konenkov; Nikolai ; et al. | 2007-11-29 |
System and method for detecting cheque fraud
App 20070064991 - Douglas; Donald J. ; et al. | 2007-03-22 |
Method and apparatus for providing two-dimensional substantially quadrupole fields having selected hexapole components
Grant 7,141,789 - Douglas , et al. November 28, 2 | 2006-11-28 |
Atmospheric pressure ion lens for generating a larger and more stable ion flux
Grant 7,067,804 - Chen , et al. June 27, 2 | 2006-06-27 |
Ion excitation in a linear ion trap with a substantially quadrupole field having an added hexapole or higher order field
App 20060118716 - Michaud; Anthony L. ; et al. | 2006-06-08 |
Axial ejection with improved geometry for generating a two-dimensional substantially quadrupole field
Grant 7,045,797 - Sudakov , et al. May 16, 2 | 2006-05-16 |
Geometry for generating a two-dimensional substantially quadrupole field
Grant 6,897,438 - Soudakov , et al. May 24, 2 | 2005-05-24 |
Method and apparatus for multiple stages of mass spectrometry
Grant 6,833,544 - Campbell , et al. December 21, 2 | 2004-12-21 |
High throughput ion source with multiple ion sprayers and ion lenses
App 20040206901 - Chen, David D.Y. ; et al. | 2004-10-21 |
Axial ejection with improved geometry for generating a two-dimensional substantially quadrupole field
App 20040108456 - Sudakov, Mikhail ; et al. | 2004-06-10 |
System and method for detecting cheque fraud
App 20040071333 - Douglas, Donald J. ; et al. | 2004-04-15 |
Geometry for generating a two-dimensional substantially quadrupole field
App 20040021072 - Soudakov, Mikhail ; et al. | 2004-02-05 |
Atmospheric pressure ion lens for generating a larger and more stable ion flux
App 20040011953 - Chen, David D.Y. ; et al. | 2004-01-22 |
Mass spectrometer including multiple mass analysis stages and method of operation, to give improved resolution
Grant 6,191,417 - Douglas , et al. February 20, 2 | 2001-02-20 |
Method and apparatus for determining the rates of reactions in liquids by mass spectrometry
Grant 6,054,709 - Douglas , et al. April 25, 2 | 2000-04-25 |
Method and apparatus for plasma mass analysis with reduced space charge effects
Grant 5,565,679 - Tanner , et al. October 15, 1 | 1996-10-15 |
Method of plasma mass analysis with reduced space charge effects
Grant 5,381,008 - Tanner , et al. January 10, 1 | 1995-01-10 |
Multipole inlet system for ion traps
Grant 5,179,278 - Douglas January 12, 1 | 1993-01-12 |
Method and apparatus for sampling a plasma into a vacuum chamber
Grant RE33,386 - Douglas October 16, 1 | 1990-10-16 |
Mass spectrometer and method and improved ion transmission
Grant 4,963,736 - Douglas , et al. October 16, 1 | 1990-10-16 |
Mass analyzer system with reduced drift
Grant 4,746,794 - French , et al. May 24, 1 | 1988-05-24 |
Method and apparatus having RF biasing for sampling a plasma into a vacuum chamber
Grant 4,682,026 - Douglas July 21, 1 | 1987-07-21 |
Method and apparatus for sampling a plasma into a vacuum chamber
Grant 4,501,965 - Douglas February 26, 1 | 1985-02-26 |
Flexibly hinged eye piece headgear
Grant 3,895,397 - Douglas July 22, 1 | 1975-07-22 |
Wind Actuated Devices
Grant 3,757,730 - Douglas September 11, 1 | 1973-09-11 |
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