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Class 73/61.52 - Chromatography


Subclass of Class 73 - Measuring and testing
Definition: Subject matter wherein the determination is made by successively
No. of patents: 267
Last issue date: 02/28/2012


1              
NumberTitleIssue Date
8122760Method of analyzing phosphorous acid, fosetyl-Al, or both simultaneously
Method for analyzing one or more pesticidal compounds present in amounts of less than or equal to 0.00005 mg/kg of a sample, comprising the following steps: a) preparation of the sample; b) optional dilution of the...
02/28/2012
7921696Liquid chromatograph device
This liquid feeding system has the first and second pumps each of which is provided with a plunger. Liquid sucked through each of the pump suction ports is discharged out of the discharging port through the first pump and/or second pump. Under the starting operation...
04/12/2011
7866203Method for the quantitative determination of poloxamers
The invention relates to the analytical determination of poloxamers in a liquid protein sample. ...
01/11/2011
7596988High performance liquid chromatography sample introduction optimized with bubble detection
A device (100) for detecting a condition in a fluid system (14) and initiating a response based on the condition. The device consists of a sensor (12) that responds to a first and second condition of the fluid (13) in the system and a con...
10/06/2009
7403863Correlation method for measurements of total and fractional immiscible media flow rates and a device for its embodiment
A correlation method for measuring total and fractional flow rates of multiphase immiscible media comprises identifying two control sections along the multiphase flow, and scanning each control section so as to measure fluctuations in the dielectric flow characteris...
07/22/2008
7373255Method and system for determination of molecular interaction parameters
A method of determining kinetic parameters for a reversible molecular interaction between a ligand immobilized to a solid support surface and a binding partner to the ligand in solution, comprises sequentially, without intermediate regeneration or renewal of the imm...
05/13/2008
7356446Method and apparatus for analyzing multi-channel chromatogram
A method for analyzing a multi-channel chromatogram is realized for accurately resolving overlapping peaks on a multi-channel chromatogram to permit analysis of the composition of a sample. First, components of overlapping peaks are specified. A data matrix Dij is d...
04/08/2008
7350401Liquid feeding system
This liquid feeding system has the first and second pumps each of which is provided with a plunger. Liquid sucked through each of the pump suction ports is discharged out of the discharging port through the first pump and/or second pump. Under the starting operation...
04/01/2008
7337653Liquid chromatography specimen filling method
A sample injection apparatus and sample injection method capable of sufficiently reducing carry-over, having simple cleaning means for a short cleaning time period, a small influence of vibration of the cleaning means, and a small error in the amount of injected sam...
03/04/2008
7327068Sensors and related devices and methods
Sensors that include SAW devices, related methods, and related devices. Many embodiments are included. Some of the present sensors include an inlet structure; a mounting structure that is spaced apart from the inlet structure, the mounting structure having a top sur...
02/05/2008
7312611Apparatus and method for trapping bead based reagents within microfluidic analysis systems
The present invention provides an on-chip packed reactor bed design that allows for an effective exchange of packing materials such as beads at a miniaturized level. In accordance with the present invention, there is provided a method of concentrating an analyte wit...
12/25/2007
7302830Flow detectors having mechanical oscillators, and use thereof in flow characterization systems
An improved system, device and method for characterizing a fluid sample that includes injecting a fluid sample into a mobile phase of a flow characterization system, and detecting a property of the fluid sample or of a component thereof with a flow detector comprisi...
12/04/2007
7282367Method for verifying amount of sample solution, method for controlling measurement system and method for measuring concentration of solution in apparatus for measuring optical characteristic
A verification method of a sample solution amount includes the steps of: detecting at least one of a transmitted light component, a scattered light component and a reflected light component of a light by a photosensor while irradiating a sample solution, which is be...
10/16/2007
7278329Chromatography system with blockage determination
There is provided a method that includes, (a) monitoring a pressure on a fluid being conveyed through an intake tube into a chamber by a pump, (b) determining a deviation of the pressure from a predefined value, (c) determining a blockage of the intake tube based on...
10/09/2007
7273517Non-planar microfabricated gas chromatography column
A non-planar microfabricated gas chromatography column comprises a planar substrate having a plurality of through holes, a top lid and a bottom lid bonded to opposite surfaces of the planar substrate, and inlet and outlet ports for injection of a sample gas and elut...
09/25/2007
7269994Chromatograph/mass spectrometer
The present invention provides a chromatograph/mass spectrometer capable of producing a composite chromatogram from plural chromatogram signals without causing the baseline level to rise or the intensity of the chromatogram peak to decrease. The chromatograph/mass s...
09/18/2007
7261812Multi-column separation devices and methods
Chromatographic separation devices include multiple batch-processed columns joined by a body structure and adapted to perform parallel analyses. Both slurry-packed and monolithic column embodiments are provided. One or more liquid-permeable frits of various types ma...
08/28/2007
7229539Destructible surfactants and uses thereof
Destructible surfactants and methods of using same are provided. The invention includes anionic surfactants having a dioxolane or dioxane functional group which enables the surfactant to be broken down under acidic conditions. The invention also includes methods of ...
06/12/2007
7225360Automatic analysis apparatus and method for controlling an analysis unit
When an instruction by a person in charge is required during an analysis operation, a transmitted e-mail processing unit creates an e-mail that includes, as a message or an attached file, information concerning data to be currently analyzed and an analysis condition...
05/29/2007
7216113Remote Execution of Materials Library Designs
Methods, apparatus, and business processes enabling individual chemists to design, order, and obtain data for multiple experiments or measurements in a timely and cost-effective manner. In particular implementations, the invention includes methods and apparatus for ...
05/08/2007
7214348Microfluidic size-exclusion devices, systems, and methods
Microfluidic devices, assemblies, and systems are provided, as are methods of manipulating micro-sized samples of fluids. Microfluidic devices having a plurality of specialized processing features are also provided. ...
05/08/2007
7214320Systems and methods for high throughput sample analysis
Systems and methods for analyzing a plurality of samples in parallel include a plurality of liquid phase separation regions, a plurality of microfluidic storage regions, and a common mass spectrometer. Samples are separated in parallel in the separation regions to y...
05/08/2007
7195461Liquid chromatographic method and system
To economically perform preparatory chromatography, a plurality of pumps each having a corresponding one of a plurality of pistons and a corresponding one of a plurality of cylinders are driven by one motor to draw and pump solvent simultaneously into corresponding ...
03/27/2007
7178386Parallel fluid processing systems and methods
A parallel fluid processing system including multiple fluid process regions containing solid material in fluid communication with a common first fluid source may be used to conduct analyses and/or synthesis in parallel. A parallel fluid processing data correction me...
02/20/2007
7160513Batch reactor with injection system
An apparatus and method for injection of one or more chemical components into a reaction chamber are disclosed. The apparatus includes a reaction chamber for receiving one or more libraries in a fixed position relative to the chamber and configured to form a sealed ...
01/09/2007
7153692Diagnostic methods for determining susceptibility to convulsive conditions
The present invention exploits the discovery that amounts of uracil and thymine metabolites, especially β-aminoisobutyric acid, in various bodily fluids, especially urine, are correlated with the occurrence of epilepsy when compared to matched control subjects. Ana...
12/26/2006
7153421Frit material and bonding method for microfluidic separation devices
A multi-layer microfluidic separation device comprises a polymeric membrane frit that may be securely bonded within the device and minimizes lateral wicking. Stationary phase material having an average particle size is retained by a frit having an average pore size ...
12/26/2006
7144740Method for chromatographic finger printing and standardization of single medicines and formulations
The present invention provides a method for the chromatographic fingerprinting, chemical and therapeutic standardization, bar-coding of the fingerprints and preparation of a data base for Enterprise Resource Planning (ERP) and Customer Relationship Management (CRM) ...
12/05/2006
7138062Mobile phase gradient generation microfluidic device
The present invention relates to a microfluidic device for separating the components of a fluid sample. A cover plate is arranged over the first surface of a substrate, which, in combination with a microchannel formed in the first surface, defines a separation condu...
11/21/2006
7138050Fractionating/collecting device of liquid chromatograph
In a preferred embodiment, a sample container storage part for storing a number of sample containers S, a nozzle for dropping a sample component separated and supplied by an LC and an additive liquid such as digestive fluid supplied from another liquid supplying par...
11/21/2006
7126031Bridged bi-aromatic ligands, catalysts, processes for polymerizing and polymers therefrom
New ligands and compositions with bridged bis-aromatic ligands are disclosed that catalyze the polymerization of monomers into polymers. These catalysts with metal centers have high performance characteristics, including higher comonomer incorporation into ethylene/...
10/24/2006
7111501Devices and methods for separating constituents
The subject invention includes constituent separation apparatuses that include a fluid pathway and a pair of spaced-apart electrodes positioned within the pathway for detecting current flow within a mobile phase present in the pathway. Coupled to the pair of spaced-...
09/26/2006
7110886Method and apparatus for analyzing multi-channel chromatogram
A method for analyzing a multi-channel chromatogram is realized for accurately resolving overlapping peaks on a multi-channel chromatogram to permit analysis of the composition of a sample. First, components of overlapping peaks are specified. A data matrix Dij is d...
09/19/2006
7095501Ethyl alcohol sensor and method of use
An ethanol sensing unit and a method of using, wherein the unit is particularly suitable for use in a confined environment such as the passenger compartment of a passenger vehicle. The sensing unit comprises a device for collecting ethanol vapors while the device is...
08/22/2006
7089785Method to assay sacrificial light absorbing materials and spin on glass materials for chemical origin of defectivity
Numerous embodiments of a method to assay sacrificial material are disclosed. In one embodiment, a sacrificial material may be analyzed by high performance liquid chromatography. Chemical markers that correlate with material contaminants in the sacrificial material ...
08/15/2006
7091292Bridged bi-aromatic catalysts, complexes, and methods of using the same
Ligands, compositions, metal-ligand complexes and arrays with substituted bridged bis-biaromatic ligands, and methods of making and using the same, are disclosed that are useful in the catalysis of transformations such as the polymerization of monomers into polymers...
08/15/2006
7084007Fabrication and assembly structures and methods for memory devices
The present invention provides for a common substrate with multiple sections, each constituting a separate layer of a memory device. Fold lines are arranged on the substrate to define separate sections and to provide a means for folding the sections on each other to...
08/01/2006
7081182Method and apparatus for automatically measuring the concentration of TOC in a fluid used in a semiconductor manufacturing process
The present invention relates to a method and apparatus for automatically measuring the concentration of total organic carbon (TOC) in chemicals and ultra-pure water that are used in a wet etch process. The apparatus includes a sampling line extending from a process...
07/25/2006
7074327Sample preparation for parallel chromatography
Systems and methods are provided for preparing samples for chromatographic separations and then chromatographically separating the prepared samples, preferably in a high-throughput fashion utilizing multiple parallel first (fluid) processing regions in fluid communi...
07/11/2006
7074870Styrene polymers and phenol-triazole type complexes, catalysts, and processes for polymerizing
Metal-ligand complexes that are useful as precursors to catalysts for the polymerization of olefins are provided. Certain of the catalysts are particularly effective at polymerizing ethylene and styrene into copolymers having novel properties, including a low molecu...
07/11/2006
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