Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8188426 | Quadropole mass spectrometer If a scanning rate of a mass scanning is set to be high, the amount of change in an applied voltage between a time of an incidence of a certain ion into a quadrupole mass filter and a time of an emission of the ion therefrom increases. This leads to a change in the ... | 05/29/2012 |
| 8178835 | Prolonged ion resonance collision induced dissociation in a quadrupole ion trap A technique is disclosed for conducting collision induced dissociation (CID) in a quadrupole ion trap (QIT) having higher order field components. In order to compensate for the shift in the frequency of motion with amplitude of the excited ions arising from the infl... | 05/15/2012 |
| 8173961 | Ion trap mass spectrometer While applying a square wave voltage to the ion electrode (21) so that ions already captured in the ion trap (20) do not disperse, the timing of irradiating a laser light for ion generation is controlled in such a manner that ions reach the ion inlet (... | 05/08/2012 |
| 8164056 | Method for operating three-dimensional RF ion traps with high ion capture efficiency In a three-dimensional Paul RF ion trap the ring electrode and end cap electrodes are formed from pairs of pole rods. This multipole rod system is then operated as a linear ion trap with a constant field distribution along the multipole rod system. While the system ... | 04/24/2012 |
| 8138474 | Method and apparatus for digital differential ion mobility separation A method for differential mobility separation of ions using digital-drive based high voltage fast switching electronics. The digital waveform delivered to the spectrometer is characterized by at least two substantially rectangular pulses of different amplitude and p... | 03/20/2012 |
| 8134123 | Mass spectrometer One virtual rod electrode is composed by a plurality of electrode plane plates arranged in the ion optical axis direction, and four virtual rod electrodes are arranged around the ion optical axis to form a virtual quadrupole rod type ion transport optical system ( | 03/13/2012 |
| 8124930 | Multipole ion transport apparatus and related methods An ion transport apparatus includes an ion entrance end, an ion exit end, and electrodes arranged along a longitudinal axis from the ion entrance end toward the ion exit end. The electrodes are configured for applying an RF electrical field that varies along the lon... | 02/28/2012 |
| 8110798 | Method for cooling ions in a linear ion trap Methods for cooling ions retained in an ion trap are described. In various embodiments, a cooling gas is delivered into a linear ion trap causing a non-steady state pressure elevation in at least a portion of the trap above about 8×10−5 Torr for a dura... | 02/07/2012 |
| 8101910 | Method, system and apparatus for multiplexing ions in MSmass spectrometry analysis A method and apparatus for multiplexing ions in an MSn mass spectrometer is provided. Ion are filtered to produce a group of ions of interest, the group of ions below a space charge limit of the MSn mass spectrometer. At least a portion of the group of ions are frag... | 01/24/2012 |
| 8084737 | Array-based ion storage system and method therefor An array-based ion storage system includes an ion generation section, and an ion storage section having a first end electrode coupled to the ion generation section and having multiple holes, a second end electrode having multiple holes, an intermediate electrode hav... | 12/27/2011 |
| 8049169 | Ion guide device, ion reactor, and mass analyzer A charged particle reaction cell of the present invention has a serially-arranged plurality of ring electrodes, wherein a modulated radio frequency voltage obtained by modulating the amplitude of a radio frequency voltage is applied, whereby ions are captured at the... | 11/01/2011 |
| 8030613 | RF power supply for a mass spectrometer The present invention provides a radio frequency (RF) power supply in a mass spectrometer. The power supply provides an RF signal to electrodes of a storage device to create a trapping field. The RF field is usually collapsed prior to ion ejection. In an illustrativ... | 10/04/2011 |
| 8022363 | Ion trap mass spectrometer While applying a square wave voltage to the ion electrode (21) so that ions already captured in the ion trap (20) do not disperse, the frequency of the square wave voltage is temporarily increased at the timing when the ions generated in response to th... | 09/20/2011 |
| 8017909 | Ion trap An ion trap comprises substantially elongate electrodes 10, 20 some of which are curved along their axis of elongation and which define a trapping volume between them. The sectional area of this trapping volume towards the extremities of the trap in the direc... | 09/13/2011 |
| 7999224 | Ion mobility spectrometers An ion mobility spectrometer has a reaction region separated from a drift region by an electrostatic gate. A doping circuit supplies a dopant to the reaction region but the drift region is undoped. Two high field ion modifiers are located one after the other in the ... | 08/16/2011 |
| 7994475 | Ion mobility spectrometer comprising two drift chambers An ion mobility spectrometer has two drift chambers and a common, doped reaction region. Each drift chamber includes an ion modifier, such as one that fragments the doped ions by a high electrical field. One of the drift chambers is doped and the other is undoped. I... | 08/09/2011 |
| 7989764 | Ion trap mass spectrometry method According to an aspect of the present invention, there are provided an ion trap mass spectrometry method and an ion trap mass spectrometry device using a mass spectrometer, the mass spectrometer including: an ion source part for ionizing a sample; an ion trap part f... | 08/02/2011 |
| 7989765 | Method and apparatus for trapping ions An ion trap comprising elongate rods, electrodes, a first circuit, and a second circuit. The rods are for defining the radial extent of a trapping volume. The first circuit is connected to the rods for applying thereto a first RF signal that generates adjacent the t... | 08/02/2011 |
| 7960693 | Microengineered electrode assembly Microengineered stacked ring electrode assemblies capable of acting as either RF or DC ion guides in an ion optical system, and method of fabricating same are described. The electrodes are fabricated using planar processing as sets of grooved, proud features formed ... | 06/14/2011 |
| 7960694 | Mass spectrometer A mass analyser (2) is provided comprising a plurality of electrodes having apertures through which ions are transmitted in use. A plurality of pseudo-potential corrugations are created along the axis of the mass ((analyser 2). The amplitude or depth o... | 06/14/2011 |
| 7952070 | Interlaced Y multipole A method and apparatus of combining two independent multipoles in an interlaced fashion to form a resultant multipole structure is introduced. Such an arrangement enables ions from two separate sources to be merged along a predetermined longitudinal direction but al... | 05/31/2011 |
| 7935924 | Batch fabricated rectangular rod, planar MEMS quadrupole with ion optics A quadrupole mass filter (QMF) is provided. The QMF includes a plurality of rectangular shaped electrodes aligned in a symmetric manner to generate a quadrupole field. An aperture region is positioned in a center region parallel to and adjacent to each of the rectan... | 05/03/2011 |
| 7935923 | Performance enhancement through use of higher stability regions and signal processing in non-ideal quadrupole mass filters A quadrupole mass filter (QMF) is provided. The QMF includes a plurality of rectangular shaped electrodes aligned in a symmetric manner to generate a quadrupole field. An aperture region is positioned in a center region parallel to and adjacent to each of the rectan... | 05/03/2011 |
| 7928375 | Microfabricated linear Paul-Straubel ion trap An array of microfabricated linear Paul-Straubel ion traps can be used for mass spectrometric applications. Each ion trap comprises two parallel inner RF electrodes and two parallel outer DC control electrodes symmetric about a central trap axis and suspended over a... | 04/19/2011 |
| 7928373 | Isolating ions in quadrupole ion traps for mass spectrometry Ions in a predefined narrow mass to charge ratio range are isolated in an ion trap by adjusting the field and using ejection frequency waveform(s). The ejection waveforms have frequency components in a first and a second dimension, and, are applied across electrodes... | 04/19/2011 |
| 7928374 | Resolution improvement in the coupling of planar differential mobility analyzers with mass spectrometers or other analyzers and detectors Prior work on differential mobility analysis (DMA) combined with mass spectrometry (MS) has shown how to couple the output of the DMA with the inlet of an atmospheric pressure ionization mass spectrometer (APCI-MS). However, the conventional ion inlet to an APCI-MS ... | 04/19/2011 |
| 7880140 | Multipole mass filter having improved mass resolution A multipole mass filter having improved mass resolution. The multipole mass filer having a first electrode set coupled to at least a RF voltage source and a second electrode set interposed and parallel to the first electrode set. The second electrode set having a va... | 02/01/2011 |
| 7872228 | Stacked well ion trap In an apparatus for performing a mass spectrometric analysis of a sample, a plurality of electrodes are positioned and driven by RF potentials to form a plurality of adjacent pseudopotential wells. Ions may be manipulated, reacted, analyzed, and ejected from the app... | 01/18/2011 |
| 7872229 | Three-dimensional RF ion traps with high ion capture efficiency In a three-dimensional Paul RF ion trap at least one of the ring electrode and end cap electrodes is structured to produce a high capture efficiency for analyte ions introduced into the trap. The electrode structuring may be produced by an electrode surface profile ... | 01/18/2011 |
| 7868289 | Mass spectrometer ion guide providing axial field, and method An ion guide includes a plurality of rods, arranged about an axis that extends lengthwise from one end to the other of the guide. The rods guide ions in a guide region along and about the axis. A conductive casing surrounds the rods. The casing and the rods are geom... | 01/11/2011 |
| 7863562 | Method and apparatus for digital differential ion mobility separation A method for differential mobility separation of ions using digital-drive based high voltage fast switching electronics. The digital waveform delivered to the spectrometer is characterized by at least two substantially rectangular pulses of different amplitude and p... | 01/04/2011 |
| 7855361 | Detection of positive and negative ions An ion detector comprises an ion guide with electrodes arranged about a first axis; a positive ion detection device with an ion inlet at a first side of the ion output section offset from and at an angle to the first axis; and a negative ion detection device with an... | 12/21/2010 |
| 7851752 | Ion guide for mass spectrometers The present invention relates generally to mass spectrometry and the analysis of chemical samples, and more particularly to ion guides for use therein. The invention described herein comprises an improved method and apparatus for transporting ions from a first press... | 12/14/2010 |
| 7847248 | Method and apparatus for reducing space charge in an ion trap Ion trap apparatus and methods for efficiently addressing the effects of charge space caused by ion trap overfilling, useful in linear ion traps of mass spectrometers. ... | 12/07/2010 |
| 7829851 | Method and apparatus for collisional activation of polypeptide ions A method and apparatus for identification of activating ions by collisions is described. The method uses a plurality of linear ion taps and a plurality of sources of ions and a mass measuring device. A first source is operated to dispense first ions into first trap,... | 11/09/2010 |
| 7804065 | Methods of calibrating and operating an ion trap mass analyzer to optimize mass spectral peak characteristics A method for calibrating an ion trap mass spectrometer is disclosed. The method includes steps of identifying a phase (defined by the RF trapping and resonant ejection voltages) that optimizes peak characteristics, and then determining, for each of a plurality of ca... | 09/28/2010 |
| 7800058 | Mass spectrometer and mass spectrometry method A mass spectrometer that is switchable to operate as a linear trap or as a mass filter, and attaining both high ejection efficiency when operated as a linear trap and high mass resolving power when operated as a mass filter. A mass spectrometer includes an ion sourc... | 09/21/2010 |
| 7786435 | RF surfaces and RF ion guides Apparatus and methods are provided for trapping, manipulation and transferring ions along RF and DC potential surfaces and through RF ion guides potential wells are formed near RF-field generating surfaces due to the overlap of the radio-frequency (RF) fields and el... | 08/31/2010 |
| 7767960 | Multi-electrode ion trap This invention relates generally to multi-reflection electrostatic systems, and more particularly to improvements in and relating to the Orbitrap electrostatic ion trap. A method of operating an electrostatic ion trapping device having an array of electrodes operabl... | 08/03/2010 |
| 7737398 | Linear RF ion trap with high mass resolution In a linear ion trap in which an essentially quadrupole RF electrical field is generated between at least four rod-shaped electrodes, ions may be mass-selectively ejected orthogonally to the axis. An aspect of the invention comprises compensating for field irregular... | 06/15/2010 |
