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| Number | Title | Issue Date |
| 8178834 | Ion detection and parameter estimation for N-dimensional data Methods and apparatus for LC/IMS/MS analysis involve obtaining noisy raw data from a sample, convolving the data with an artifact-reducing filter, and locating, in retention-time, ion mobility, and mass-to-charge-ratio dimensions, one or more ion peaks of the convol... | 05/15/2012 |
| 8176932 | Defined leak path for high pressure seal Embodiments of the present invention are directed to methods and devices for conveying or containing fluids under pressure in which seals are provided with a defined path to vent fluid in the event of a seal failure. ... | 05/15/2012 |
| 8173070 | Sample injector system for liquid chromatography An injection device (10) includes a carrier inlet (40), a sample inlet (46), waste outlet (44) and a chamber outlet (64) attached to separation column (66). Valves (52, 54, 56) are used to control flow such that sampl... | 05/08/2012 |
| 8165820 | Methods and apparatus for performing retention-time matching A method for matching a precursor ion with one or more related product ions includes providing input data sets obtained from sample injections, each of the data sets including a precursor ion and one or more product ions, normalizing the input data sets in accordanc... | 04/24/2012 |
| 8160751 | Devices, systems and methods for flow-compensating pump-injector synchronization Systems, devices, and methods to mitigate the pressure disturbance associated with the injection of low-pressure analyte samples into a high-pressure HPLC fluid stream, to enhance chromatographic performance related to retention time and reproducibility. The preferr... | 04/17/2012 |
| 8153009 | Apparatus and methods for mass-spectrometric directed purification of biopolymers A method for extracting at least one target compound from a sample includes injecting an overloaded amount of the sample into a chromatographic conduit (110), and flowing a solvent having a time-varying composition through the conduit (110). An apparat... | 04/10/2012 |
| 8151629 | Pressure monitor optimization of fluid path utilization A device comprising a pressure monitor and a control means that receives a signal representing measured pressure at the pressure monitor and controls the controllable elements of a fluid system is utilized to monitor a fluid system for error conditions, to optimize ... | 04/10/2012 |
| 8143066 | Methods and apparatus for performing retention-time matching A method (100) for analyzing chemicals includes fractionating a complex sample into at least two sample portions that each includes portions of two polypeptides though in different concentration ratios, digesting and performing LC/MS on each of the sample por... | 03/27/2012 |
| 8123949 | Methods for separating compounds Methods and systems for analyzing samples using multi-dimensional chromatography are disclosed. ... | 02/28/2012 |
| 8107067 | Opaque additive to block stray light in teflon AF light-guiding flowcells The present invention is directed to the use of a light absorbing wall material to eliminate stray light paths in light-guiding structures, such as those used for HPLC absorbance detection. More specifically, the present invention relates to the use of carbon-doped ... | 01/31/2012 |
| 8105838 | Generation and use of a catalog of polypeptide-related information for chemical analyses A method (100) for performing chemical analyses includes digesting a reference sample to obtain precursors associated with a peptide in the sample (110), separating the precursors to determine values associated with retention times of the separated pre... | 01/31/2012 |
| 8089627 | Evaporative light scattering detector Described is a detector for receiving the eluent from a liquid- or supercritical-fluid chromatograph in which a signal indicative of the presence of an analyte in the eluent is generated by the scattering of light by desolvated particles of the analyte. The detector... | 01/03/2012 |
| 8087821 | Infrared heated differential scanning calorimeter A heat flux differential scanning calorimeter (DSC) is disclosed. The DSC can be configured with a highly conductive sample assembly enclosure. The enclosure can include a high emissivity coating. In one embodiment, the enclosure extends along a longitudinal directi... | 01/03/2012 |
| 8076635 | Apparatus and method for performing mass spectroscopy Embodiments of the present invention are directed to apparatus and methods for performing mass spectrometry. Data pair information is subjected to an ion audit process in which data pair information that relates to scored compounds is subtracted from the data pair i... | 12/13/2011 |
| 8066429 | System and method for thermal analysis using variable thermal resistance A thermal measurement apparatus and method for performing heat flux differential scanning calorimetry (DSC) is disclosed. A variable thermal resistor is used to couple a measurement assembly to a heat sink in the thermal measurement apparatus, such that samples can ... | 11/29/2011 |
| 8048305 | Methods for separating and analyzing anionic compounds Systems, methods and compositions for the purification, separation and analysis of anionic compounds, including polyanionic compounds are disclosed. ... | 11/01/2011 |
| 8047060 | Method and apparatus for sample injection in liquid chromatography The present invention provides a method and apparatus for substantially eliminating destructive transients of pressure or flow rate which can degrade the efficiency and useful lifetime of chromatography columns. The present invention enables a substantially constant... | 11/01/2011 |
| 8035088 | Device, apparatus and methods for mass spectrometry The invention comprises apparatus for use with atmospheric pressure ionization sources in which an aerosol is formed from a solution of a sample. The aerosol is received in a hollow member and discharged outside the chamber of the ionization source in order to reduc... | 10/11/2011 |
| 8017908 | Apparatus and method for identifying peaks in liquid chromatography/mass spectrometry data and for forming spectra and chromatograms Chromatograms and mass spectra produced by an LC/MS system are analyzed by creating a two-dimensional data matrix of the spectral and chromatographic data. The two-dimensional matrix can be created by placing the spectra generated by the mass spectrometer portion of... | 09/13/2011 |
| 7977114 | Method and apparatus for monitoring processes using a single detector Embodiments of the invention feature methods and apparatus for the efficient utilization of detectors and other components. The apparatus comprises a pump for receiving and propelling one or more samples in a fluid path. The apparatus further comprises a valve eleme... | 07/12/2011 |
| 7958774 | Device and method for sample preparation A system and method for sample preparation and/or sample enrichment are provided. The system comprises the following components: a first switch element with a switch element input and at least two mutually exclusive switch element outputs and a second corresponding ... | 06/14/2011 |
| 7955059 | Fluid control device for a high pressure analytical instrument In various embodiments a fluid control device suitable for high pressure analytical instruments includes a housing having an interior surface with an end wall. The interior surface defines a chamber. A valve assembly disposed in the chamber controls the flow of flui... | 06/07/2011 |
| 7951597 | Pressurized fluid sample injector and method of injecting fluid samples The present invention is a pressurized fluid sample injector system consisting of a sample needle, multiport valve, sample loop, metering syringe and a pressure assist pump. The speed of sample transport into the sample loop is increased by pressurizing the fluid in... | 05/31/2011 |
| 7943900 | Mass analysis using alternating fragmentation modes A method for the analysis of mixtures of components includes separating or partially separating different components of a mixture of a sample by means that causes the components to elute sequentially over a period of time, forming precursor ions from the components ... | 05/17/2011 |
| 7938961 | Capillary loop with a built-in retaining frit Disclosed herein are an apparatus and method for effectuating increased chromatographic efficiency in a capillary column by employing a retaining frit disposed within an analytical capillary. By disposing the retaining frit within the analytic capillary, the void vo... | 05/10/2011 |
| 7919177 | Porous inorganic/organic hybrid particles for chromatographic separations and process for their preparation Novel material for chromatographic separations, processes for its preparation, and separations devices containing the chromatographic material. In particular, the disclosure describes porous inorganic/organic hybrid particles having a chromatographically-enhancing p... | 04/05/2011 |
| 7917250 | Devices, systems and methods for flow-compensating pump-injector synchronization Systems, devices, and methods to mitigate the pressure disturbance associated with the injection of low-pressure analyte samples into a high-pressure HPLC fluid stream to enhance chromatographic performance related to retention time and reproducibility. The injectio... | 03/29/2011 |
| 7911609 | Evaporative light scattering detector Embodiments of the present invention are directed to evaporation light scattering detectors having an evaporative chamber having a wall that is in good thermal contact with a heat sink. The heat has a high thermal mass such that a change in temperature of the wall d... | 03/22/2011 |
| 7909994 | Mobile phase dilution scheme for enhanced chromatography A method and device for increasing the loading capacity of a chromatography column through dilution of a mobile phase at the head of the column. A strong mobile phase is provided for dissolving a sample. A sample is injected into the strong mobile phase, and subsequ... | 03/22/2011 |
| 7909367 | Capillary interconnection fitting and method of holding capillary tubing The present invention is a capillary interconnection fitting and method of clamping a capillary in the fitting that separates a forward ferrule that holds the capillary from a secondary clamping device. The fitting comprises a sealing ferrule, a compression screw an... | 03/22/2011 |
| 7897917 | Methods and apparatus for performing chromatography and mass spectroscopy with supercritical fluid samples Embodiments of the present invention are directed to devices and methods for receiving NSC Fluids having at least one analyte from a chromatograph and directing analyte ions into the vacuum regions of a mass spectrometer. The device has a housing having at least one... | 03/01/2011 |
| 7888637 | Sample preparation plate for mass spectrometry Disclosed herein is a sample preparation plate used to prepare a sample for mass spectrometry. In particular, a sample plate used to concentrate a sample as well as remove contaminants from the sample while providing easy manipulation of small liquid droplets on a s... | 02/15/2011 |
| 7887754 | Polymeric solid supports for chromatography nanocolumns Nanocolumn chromatography devices useful, e.g., in CEC and nanoLC are disclosed. An exemplary chromatography device of the invention includes a nanocolumn, e.g., a capillary, packed with a particulate stationary phase material and a solid support. The solid support,... | 02/15/2011 |
| 7847936 | Evaporative light scattering device and methods of use thereof Apparatus for the detection of analytes in a fluid, for example the eluant from a liquid chromatography is described. Solvent is evaporated from the eluant to produce a stream of particles when analyte is present in the fluid. The resultant stream of particles is pa... | 12/07/2010 |
| 7875175 | Mobile phase dilution scheme for enhanced chromatography A method and device for increasing the loading capacity of a chromatography column through dilution of a mobile phase at the head of the column. A strong mobile phase is provided for dissolving a sample. A sample is injected into the strong mobile phase, and subsequ... | 01/25/2011 |
| 7863561 | Mass-spectrometer interface housing An apparatus for performing chemical analyses includes a mass spectrometry module and an interface module that processes sample materials for delivery to the mass spectrometry module. The interface module includes a vessel having an opening to access a vessel chambe... | 01/04/2011 |
| 7859657 | Methods of making and using an apparatus and devices for placing light and sample in photo-emitting or absorbing devices The present invention relates to apparatus and devices (11) for placing light with samples for analysis and method of making and using such apparatus and device. ... | 12/28/2010 |
| 7858932 | Capillary emitter for electrospray mass spectrometry Disclosed herein is an electrospray device for mass spectrometry that includes a fluid inlet, an outlet orifice, and a passage for fluid communication between the fluid inlet and outlet orifice. This passage is formed from a capillary (i.e., a first capillary). This... | 12/28/2010 |
| 7851742 | Method and apparatus for identifying proteins in mixtures A system and method for mass analysis where a sample (102) is separated in a liquid chromatograph (104), and subsequently analyzed in a mass spectrometer (112). ... | 12/14/2010 |
| 7841190 | Freeze-thaw valve that self-limits cryogenic agent usage Methods and devices for the management of cryogenic agents within analytical systems using freeze thaw valving having an expansion chamber that limits the flow of the cryogenic agent. The expansion chamber is fitted with an expansion nozzle through which a cryogen f... | 11/30/2010 |
