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8148691 |
Calibration methodology for NDIR dew point sensors
A method for calibrating a dual-beam NDIR gas sensor for detecting water vapor by obtaining a variant sensor components domain (“G0”) when there is no water vapor gas in the sample chamber, obt...
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8106361 |
Method and device for determining an alcohol content of liquids
A method determines an alcohol content of liquids that contain at least water and alcohol as well as sugar or similar substances, in the liquid. The liquid is located in an analysis cell is...
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8096165 |
Spectrophone assembly for identifying and detecting multiple species
A spectrophone assembly comprises a single detector chamber, a plurality of lasers, a gas inlet for supplying a gas sample to the single detector chamber, and at least one microphone. The detector...
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8094311 |
Spectroscopic method of determining the amount of an analyte in a mixture of analytes
The invention relates to a multivariate calibration which can be used when the optical system used for that method does not comprise a multi-channel detector such as a CCD sensor or a line array of...
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8044354 |
Method for classifying resins types in carbon fiber reinforced plastic materials using IR spectroscopy
In one embodiment, a method of classifying a polymer containing surface is provided including collecting one or more spectra of infrared energy reflected from the surface over a spectrum of...
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8017910 |
Method for predicting hydrocarbon process stream stability using near infrared spectra
A method of predicting the stability of a hydrocarbon process stream is disclosed and claimed. The method includes obtaining samples from one or more process streams and measuring the actual...
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8018596 |
Interactive variable pathlength device
This disclosure relates generally to a sampling device, and more particularly, a sampling device that facilitates spectroscopic measurements with a variable path length and the necessary software...
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7977636 |
Infrared imaging using thermal radiation from a scanning probe tip
A method for performing sub-micron optical spectroscopy, using a heated SPM probe and far-field collection optics is described. The enhanced emission characteristics at a sharp heated tip...
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7965391 |
Airborne tunable mid-IR laser gas-correlation sensor
A method and apparatus for measuring target gas concentrations in an atmosphere. The method and apparatus emit in the atmosphere a laser beam tuned to a molecular absorption line of a target gas,...
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7919754 |
Breath analyzer
A system for the detection and analysis of at least one volatile substance in breath samples of a subject, including at least one source of infrared radiation adapted to the wavelength range of...
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7904251 |
Method for modification of a synthetically generated assay using measured whole crude properties
The present invention is a method for modifying any synthetically generated assay of a whole crude oil or a portion of a whole crude, such as a condensate or resid material, by using measured crude...
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7884937 |
Airborne tunable mid-IR laser gas-correlation sensor
A method and apparatus for measuring target gas concentrations in an atmosphere. The method and apparatus emit in the atmosphere a laser beam tuned to a molecular absorption line of a target gas,...
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7857964 |
Method of refining heavy oil and refining apparatus
The present invention relates to a method in which grades of oil are refined according to their object from a feed oil. This method has a solvent extraction process that obtains an extracted oil,...
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7838835 |
Development of disposable/sealable caps for spectroscopic probes
The present invention relates to a sealable cell for measuring a liquid sample comprising a spectroscopic probe and a removable cap that can accommodate at least the head of the probe, wherein the...
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7799835 |
Recycling and reduction of plastics and non-plastics material
The present invention provides, e.g., methods to recycle and/or reduce plastic, non-plastic, or a combination thereof, from a waste stream. The methods of the present invention include contacting...
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7796256 |
Oil-immersion enhanced imaging flow cytometer
A flow chamber, imaging objective, condenser and imaging light source as part of an optical system includes an oil-immersion objective and high numerical aperture condenser matched to a rectangular...
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7754490 |
Microfluidic preconditioning of (bio)fluids for reagent-free infrared clinical analysis and diagnostics
A number of reagent-free infrared spectroscopic diagnostic and analytical methods have been established previously, making use of dry biofluid films. For example, this approach has successfully...
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7755051 |
Method and device for the quantitative analysis of solutions and dispersions by means of near infrared spectroscopy
The present invention relates to a method for quantifying the composition of a product, including: irradiating the product with a radiation source in the near infrared range; receiving radiation...
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7750302 |
Method and apparatus for detecting naphthenic acids
A method and apparatus for determining the concentration of organic acids in formation fluids is provided including pumps for pumping fluids from a subterranean formation into the body of a...
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7659512 |
Oil type discrimination method and oil type discriminator
To provide an oil type discrimination method and an oil type discriminator capable of accurately discriminating a type of oil even when light-shielding components exist in the oil and of preventing...
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7647815 |
Method of identifying and detecting the concentrations of multiple species by means of a spectrophone
A method of identifying and determining the concentrations of multiple species in a gas sample, includes providing a spectrophone assembly having a detector chamber, supplying the gas sample to the...
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7598493 |
Method of identifying peat moss
A method of identifying different brands of peat moss including the steps of separation of the peat and sand by first adding water to the peat and sand mixture to enable the peat to float to the...
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7528373 |
Method and system for detection of gas leakage sources
A system for detection of gas leakage sources. An open-path FTIR detection system is located before the return filter of recirculating air of a factory to detect gas composition of recirculating...
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7528374 |
Sensing apparatus having optical assembly that collimates emitted light for detection
An apparatus for optical sensing of samples includes an optical source, an optical assembly, a sample holder, an objective lens, and a detector. The objective lens collimates light emitted by the...
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7502693 |
Spectral feature-based identification of substances
A spectroscopic identification method and system are provided that uses the primary or main spectroscopic features of a source, such as those as arising from chemical functional groups, to describe...
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7483137 |
Non-destructive derivation of weight of single seed or several seeds
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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7442936 |
Infrared spectroscopy method for measuring the base number of overbased lubricants
The present invention provides a method for measuring a lubricant's total basicity by measuring one or more preselected infrared absorption bands of a lubricant and correlating the measured bands...
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7442935 |
Device for analyzing the composition of the contents of a container
The present invention relates to a device for analyzing the composition of the contents of a receiver comprising: means (40) for emitting/receiving an electromagnetic field at a variable frequency...
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7433552 |
Obtaining analyte information
Light, such as from an analyte-wavelength converter or other optical sensor, is propagated to a detector or transmission structure with an entry surface and with output positions such as in an exit...
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7414244 |
Mixing ration detecting apparatus, method of controlling mixing ration detecting apparatus, and fuel cell system incorporating mixing ratio detecting apparatus
A mixture ratio detecting apparatus comprises: a light source which emits light including light of an infrared region; a first light detecting unit which detects the light of the infrared region...
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7399968 |
Spectroscopic instruments and methods employing array detector and variable filtering
Disclosed are pharmaceutical dosage unit manufacturing process control apparatus and methods. These can include acquiring a plurality of multi-pixel images of a flow of pharmaceutical dosage units...
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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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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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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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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 of the...
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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 CO2 sensor to generate a detector signal based upon a 15μ absorption band of CO2 and generates an alarm ...
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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 CO2 sensor generates a detector signal based upon a 15μ absorption band of CO2 and a signal processor generates an alarm signal when a preselected criterion is met. ...
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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 CO2 or a 6.27μ absorption band of H2O and a s...
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