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7354553 |
Method and apparatus for detecting the presence of elemental mercury in a gas sample
An improved elemental mercury analyzer utilizes a fluorescence assembly in combination with a fluorescence quenching reduction mechanism to detect the concentration of elemental mercury within an...
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7339657 |
Low-cost on-line and in-line spectral sensors based on solid-state source and detectors combinations for monitoring lubricants and functional fluids
A series of optical spectral sensors is based on a combination of solid-state sources (illumination) and detectors housed within an integrated package that includes the interfacing optics and...
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7335885 |
Ultra low power NDIR gas sensor fire detector
A fire detector and method for generating an alarm signal in response to a fire uses an NDIR sensor to generate a detector signal based upon one or more absorption bands selected from the 15.1μ...
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7326576 |
Raman spectroscopic monitoring of hemodialysis
Spectroscopic systems and methods are disclosed for determining levels of at least one analyte in blood undergoing hemodialysis. In one aspect, the invention employs Raman spectroscopy to monitor...
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7312452 |
Mobile remote detection device and remote detection method for methane gas accumulations
The invention relates to a mobile remote detection device for accumulations of methane, comprising an emitter device having a light source in order to generate light, the wavelength of said light...
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7288768 |
Method for measuring the amount of an organic substance in a food product with infrared electromagnetic radiation
A method for measuring the amount of an organic substance in a food product with infrared electromagnetic radiation.
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7276701 |
Method of infrared-optically determining the concentration of at least one analyte in a liquid sample
A method of infrared-optically determining the concentration of at least one analyte in a liquid sample, wherein the infrared absorption of the analyte(s) is measured and compared with a standard,...
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7276700 |
Method of analysing a pharmaceutical sample
The present invention relates to a method for analysing the amount of free gas within a pharmaceutical sample. According to the invention the method comprises the following steps: providing a...
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7274456 |
Non-destructive single seed or several seeds NIR analyzer and method
A method and apparatus for optically interrogating a particle comprising obtaining a plurality of optical interrogations from a plurality of orientations relative the particle. In one aspect, the...
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7260485 |
Method and systems for distinguishing between materials having similar spectra
Various computer-implemented methods and systems are provided. One computer-implemented method includes determining a ratio between output signals generated by detecting spectra for a single event...
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7255835 |
Single pass attenuated total reflection fourier transform infrared microscopy apparatus and method for identifying protein secondary structure, surface charge and binding affinity
Apparatus and method for acquiring an infrared spectrum of a sample having or suspected to have an amide I band, an amide II band, an amide III band, an amide A band, an OH stretching region or a...
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7233001 |
Multi-channel infrared optical phase fraction meter
Methods and apparatus for measuring a phase fraction of a flow stream are disclosed. An infrared phase fraction meter includes a light source for emitting into a flow stream infrared radiation that...
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7230244 |
Method and apparatus for the detection of terahertz radiation absorption
The invention is a method and apparatus for the detection of terahertz radiation. In one embodiment, frequency modulated spectroscopy is performed on a swept source of coherent far infrared...
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7227147 |
Process for monitoring and controlling nitrating processes with the aid of an online spectrometer
A process for monitoring and/or controlling a nitrating process, having the following steps:
measuring inline infrared spectra of nitric acid content in a reaction mixture stream downstream...
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7214939 |
Ultra low power NDIR carbon dioxide sensor fire detector
A fire detector and method for generating an alarm signal in response to a fire uses an NDIR CO 2 sensor to generate a detector signal based upon a 15μ absorption band of CO 2 and generates an...
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7197405 |
Interactive method of providing analysis of potency and purity of pharmaceutical compounds
A computer facilitated, interactive method of requesting an spectrographic analysis of a sample having an unknown concentration or purity, performing an energy absorbance analysis of the sample to...
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7193213 |
Method for measurement of silanol group concentration and cell for measurement
The removal of intra-cell moisture can be performed within a short period of time by the use of pressure cell. In particular, a method of measuring the concentration of silanol groups characterized...
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7186979 |
Passive NDIR carbon dioxide sensor fire detector
A fire detector with a passive CO 2 sensor generates a detector signal based upon a 15μ absorption band of CO 2 and a signal processor generates an alarm signal when a preselected criterion is...
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7176460 |
Passive NDIR gas sensor fire detector
A fire detector and method for detecting fires uses a passive NDIR sensor that generates a detector signal based upon either a 15μ absorption band of CO 2 or a 6.27μ absorption band of H 2 O and...
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7173536 |
Substance detection and alarm using a spectrometer built into a steering wheel assembly
A spectrometer for infrared reflectance measurements of samples for identification of the sample materials is built into a steering wheel assembly. The spectrometer includes a window and optics on...
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7161151 |
Plastic identifying method
A plastic identifying method of the present invention is provided with a step (i) of obtaining a first infrared absorption spectrum by irradiating infrared light of a predetermined wave number onto...
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7157713 |
Device and method for identifying plastic
A plastic identifying apparatus of the present invention is provided with a sampling unit ( 2 ) that samples a test piece ( 1 ) from an item to be identified that contains plastic; an identifying...
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7153391 |
Method in connection with the production of pulp, paper or paperboard
Method for predicting properties of a product of cellulose-fibre-based pulp, paper or paperboard, wherein a suspension of cellulose fibre is subjected to analysis, during manufacture of the...
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7145147 |
Apparatus and methods of determining chemical properties of a resin-based material using infrared absorbance
Apparatus and methods of determining the chemical properties of a composite material using infrared spectroscopy are disclosed. In one embodiment, an apparatus for determining the chemical...
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7122799 |
LED or laser enabled real-time PCR system and spectrophotometer
A system for conducting a polymerase chain reaction (PCR) assay upon a collection of samples is disclosed. The PCR assay is performed by absorption detection. The system includes a multi-well plate...
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7102131 |
Device for photometric measurement of several samples
A device for photometric measurement of several samples ( 12 ) that are exposed to radiation from a light source ( 14 ) associated therewith. The light modified by the samples ( 12 ) is intercepted...
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7091487 |
Non-dispersive ir measurement of gases using an optical filter
A method and apparatus for determining the safety of a gas mixture containing flammable components such as methane together with ethane or other hydrocarbon, together with a diluent gas. The method...
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7068357 |
Near infrared chemical imaging microscope
A chemical imaging system is provided which uses a near infrared radiation microscope. The system includes an illumination source which illuminates an area of a sample using light in the near...
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7067812 |
Multispectral selective reflective Lidar
A multispectral selective reflection Lidar system generates alternating pulses of at least two wavelengths and senses returns for determining the presence of a predetermined material absorbing and...
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7067811 |
NIR spectroscopy method for analyzing chemical process components
A method is described for providing rapid on-line analyses of chemical compositions such as chemical process streams, utilizing near-infrared (NIR) spectroscopy in combination with chemometrics. In...
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7064329 |
Amplifier-enhanced optical analysis system and method
An amplifier-enhanced optical analysis system and method to optically analyze a molecular component of a gas, liquid, or solid. The amplifier-enhanced optical system comprises a laser, a light...
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7038193 |
Method and device for separating different emission wavelengths in a scanning microscope
A method for separating different emission wavelengths in a scanning microscope includes scanning a specimen with an illuminating light beam by passing the illuminating light beam over the specimen...
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7030380 |
Apparatus for on-line monitoring quality/condition of fluids
An apparatus for on-line optical monitoring of the quality and/or chemical condition of a fluid; in particular, a hydrocarbon-based fluid used in transportation and industrial applications. The...
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7016026 |
Method and apparatus for a downhole refractometer and attenuated reflectance spectrometer
The invention relates to refractometry and attenuated reflectance spectrometry in a wellbore environment. Specifically, it pertains to a robust apparatus and method for measuring refractive index...
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7012255 |
Method of measuring the concentration of hydroperoxides of alkylaromatic hydrocarbons
A method for measuring a concentration of a hydroperoxide of an alkylaromatic hydrocarbon in a process stream comprises immersing a probe into the process stream; wherein the probe is coupled to a...
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7009180 |
Pathlength-independent methods for optically determining material composition
A method uses spectroscopy to determine an analyte concentration in a sample. The method includes producing an absorbance spectrum of the sample. The method further includes shifting the absorbance...
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6993444 |
Measuring method of component concentration in solution
A measuring method of determining component concentration in a solution by calculating component concentrations in the solution at various temperatures in a small number of steps. The component...
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6992293 |
Real-time infrared chemical imaging spectroscopic apparatus
This invention relates to a real-time infrared chemical imaging spectroscopic apparatus, including a light source for generating infrared radiation. A test sample absorbs a narrow-bandwidth...
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6989277 |
Method for immunoassays based on infrared reflection absorption spectroscopy
This invention relates to a method for immunoassays based on infrared reflection absorption spectroscopy that utilizes proteins such as antigen and antibody that have specific absorptions in...
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6975891 |
Raman spectroscopic system with integrating cavity
The present invention provides an apparatus for measurement of Raman scattered radiation comprising. The apparatus comprises at least one source of electromagnetic radiation for producing an...
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6960769 |
Infrared measuring apparatus and method for on-line application in manufacturing processes
A single vane shutter flag is asynchronously controlled so that a measuring system light source is interrupted for a minimum necessary amount of time for standardization/calibration and...
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6958479 |
Method of processing data from a spectrophotometer
A method of processing data from at least one spectrophotometer characterized by the steps of transferring the data from the spectrophotometer to a control processing unit, processing the data at...
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6947848 |
System and method for identifying unknown compounds using spectra pattern recognition
A method of identifying and unknown compound comprises: (a) obtaining an absorption spectrum of the compound; (b) obtaining an absorbance value A n (ν n ) wherein A n is the absorption value at a...
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6930773 |
Spectral imaging
A method is described that includes measuring, at each of a set of W wavelength bins, a spectral response of at least one region of a sample stained with multiple stains, and determining the...
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6927393 |
Method of in situ monitoring of supercritical fluid process conditions
A method and apparatus are provided for in situ monitoring and analyzing of process parameters for semiconductor fabrication processes including cleaning semiconductor wafers utilizing a...
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6903329 |
Cooled mounting for light detector
A new type of mounting mechanism for a light detector that cools the mounting for a light detector such that the maximum efficiency of the light detector's internal cooler can be achieved despite...
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6881381 |
Apparatus for marking and identifying liquids
A liquid can be marked for identification purposes with at least first and second miscible markers. The markers are mixed in the liquid so that the ratio of the concentration of the first marker to...
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6879425 |
Device for determining and/or monitoring the density and/or the level of a filling material in a container
The invention relates to a device for determining and/or monitoring the density and/or the level (L) of a filling material in a container. A transmitting unit which emits radioactive radiation and...
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6855901 |
Process and apparatus for spectroscopic identification and sorting of barrier materials
An apparatus and process that makes use of spectral information in the mid-infrared range (400 to 4500 cm −1 ) to identify recyclable materials containing barrier polymers from recyclable...
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6852977 |
Method and apparatus for identifying plastic
A method for distinguishing a kind of plastic materials, by preparing a test piece of a plastic material; measuring an infrared spectrum of the test piece by attenuated total reflection...
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