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| Number | Title | Issue Date |
| 7911606 | Method for operating an optical emission spectrometer The invention relates to a method for the spectral analysis of metal samples with the following steps: a. Recording of a spectrum of an unknown sample with a number of preset excitation parameters, b. Comparison of the spectrum with stored ... | 03/22/2011 |
| 7511810 | Plasma generating electrode inspection device The present invention provides a plasma generating electrode inspection device capable of efficiently inspecting the parallelism, flatness, surface roughness, and dielectric strength of a plasma generating electrode. A plasma generating electrode inspection device | 03/31/2009 |
| 7420195 | Frequency-optimized detection of gun muzzle flashes Methods for remotely detecting a gun muzzle flash, using frequency-optimized detection methods. Small explosive charges are best detected at I/R and visible wavelengths, using optical detectors, whereas large explosive charges may also be detected with antennas. Det... | 09/02/2008 |
| 7391508 | Arc/spark optical emission spectroscopy correlated with spark location Two or more high-frequency microphones are used to determine where an individual spark or other excitation beam strikes a sample in an optical emission spectroscopy (OES) instrument. The position of the spark can be correlated with the elemental composition of the m... | 06/24/2008 |
| 7365841 | Method for analysis of a molten material, device and immersion sensor A method and device are provided for analysis of a molten material using optical emission spectrometry. The molten material may be, for example, a molten metal, such as casting iron or steel, or slag, glass, or lava. A sensitive element is used having at least one e... | 04/29/2008 |
| 7285247 | Apparatus and method for operating a fuel reformer so as to purge soot therefrom A method of operating a fuel reformer includes advancing a first air/fuel mixture having a first air-to-fuel ratio into the fuel reformer. The method further includes determining if a soot purge is to be performed and generating a purge-soot signal in response there... | 10/23/2007 |
| 7280202 | Ingredient analysis method and ingredient analysis apparatus In an ingredient analysis method and an ingredient analysis apparatus in accordance with the present invention, high-frequency power is supplied from a power source 4 while helium gas is supplied to an atmospheric pressure plasma source 2 disposed near... | 10/09/2007 |
| 7256880 | Goniophotometer A hemispherical goniophotometer is disclosed, in which two pivoting arms are articulated on a revolving rotating arm and are each fitted with a measurement head. The geometry of the arrangement is chosen such that the measurement heads can move along the envelope su... | 08/14/2007 |
| 7257145 | Spectroscopy-based safety system and method for a vacuum arc remelt furnace A vacuum arc remelt furnace system that automatically monitors for electrode to crucible arcing in a VAR furnace. The vacuum arc remelt furnace system includes a crucible, an electrode provided within the crucible, and a spectrometer operatively coupled to the gap b... | 08/14/2007 |
| 7244281 | Method and apparatus for trapping and purging soot from a fuel reformer A plasma fuel reformer assembly for producing reformate gas includes a fuel reformer having an air/fuel input assembly, an electrode assembly, and a soot trap positioned downstream of the electrode assembly. The electrode assembly includes a first electrode and a se... | 07/17/2007 |
| 7227636 | Apparatus and method for the spectroscopic determination of carbon An optical emission spectrometer for analysis, identification or identity testing of metallic materials, and a method for optical emission analysis of metallic materials with a spectrometer, wherein the spectrometer has at least one arc or spark generator for produc... | 06/05/2007 |
| 7210930 | Apparatus and method for curing materials with radiation A hand held dental instrument for curing light-curable compounds comprises a housing and an array of solid state, light emitting junctions or dies for generating light having wavelengths within a narrow band of wavelengths (e.g. 400–500 nm). Preferably, a peak wav... | 05/01/2007 |
| 7196791 | Optical detection device A diffractive optical element device for use in spectroscopy, where broadband light is emitted from a light source (31) towards the optical element (24) and from there is transmitted to at least one detector (29; 29′). The optical element has ... | 03/27/2007 |
| 7157710 | Corona discharge detection An apparatus and process are provided for detecting whether a corona discharge has occurred external or internal to equipment in which a broadband optical spectra sensor is placed. The broadband optical spectra sensor senses both the ultraviolet energy of the corona... | 01/02/2007 |
| 7095022 | Electron beam apparatus and method of manufacturing semiconductor device using the apparatus The present invention provides an electron beam apparatus for irradiating a sample with primary electron beams to detect secondary electron beams generated from a surface of the sample by the irradiation for evaluating the sample surface. In the electron beam appara... | 08/22/2006 |
| 7066733 | Apparatus and method for curing materials with light radiation An instrument and method for curing light-curable compounds in the mouth of a patient, the instrument comprising a housing and a plurality of solid state, light-emitting elements on a substrate supported by the housing. The elements form a collective array on the su... | 06/27/2006 |
| 6934021 | Method and arrangement for applying optical emission spectroscopy to the detection of the 193 nm spectral line of carbon A measurement device and method are provided for OES measurements in air. An arc electrode (201, 501) has a certain thickness and a pointed end having a certain grinding angle. Holding means (202, 502) hold the arc electrode (201, 501) at a cert... | 08/23/2005 |
| 6734964 | Pulsed, atmospheric pressure plasma source for emission spectrometry A low-power, plasma source-based, portable molecular light emission generator/detector employing an atmospheric pressure pulsed-plasma for molecular fragmentation and excitation is described. The average power required for the operation of the plasma is between 0.02... | 05/11/2004 |
| 6480274 | Method of analyzing oxygen and oxide in metallic material This invention provides a quantitative determination method capable of quickly determining a mean composition of oxide type inclusions and oxygen concentration of a metallic material such as a steel by using an optical emission spectrometer alone. This me... | 11/12/2002 |
| 6452179 | On-site analyzer An apparatus (10) for analyzing lubricant oils and functional fluids includes an optical emission spectrometer (OES) (26) having a substantially continuously valued wavelength versus intensity output (140). The OES (26) analyzes light captured from a spar... | 09/17/2002 |
| 6411379 | Method and apparatus for the localization of element concentrations in a continuous casting In order to localize element concentrations in the edge areas of a horizontally manufactured continuous casting of alloyed non-ferrous metals, a longitudinal section is removed from the continuous casting. At least one strip of surface layer is then remov... | 06/25/2002 |
| 6314796 | Method and device for nondestructively testing fluid-filled containers for leaktightness Apparatus and process for non-destructively testing a fluid-filled container for leaktightness, the process comprising: (a) subjecting the fluid-filled container to a vacuum or near vacuum environment; (b) utilizing electrical equipment to form an electrical d... | 11/13/2001 |
| 5920400 | Method and device for determining the purity and/or pressure of gases for electric lamps According to the method the intensity of at least one pressure-independent (impurity detection) or pressure-dependent (gas pressure determination) spectral line is measured selectively. Indirect detection utilizes the intensity of spectral lines whose wav... | 07/06/1999 |
| 5760897 | Process for atomising electrolytes and the chemical analysis thereof The present invention relates to a one-step process useful in the chemical analysis for atomising electrolyte solutions or fluids with electric conductivity, and a multielement direct analysis method of the components of such fluids, which is also operabl... | 06/02/1998 |
| 5728253 | Method and devices for detecting the end point of plasma process Disclosed herein is a method of detecting an end point of plasma process performed on an object, and a plasma process apparatus. The method includes the steps of detecting an emission spectrum over a wavelength region specific to C2 in the plas... | 03/17/1998 |
| 5699155 | Emission spectral analysis method and instrument therefor An improved emission spectral analysis method and apparatus for analyzing a sample by causing discharge and light emission between the sample and the counter electrode, spectroscopically dispersing the spectral lines peculiar to the elements, and measurin... | 12/16/1997 |
| 5641640 | Method of assaying for an analyte using surface plasmon resonance In a method of assaying for an analyte in a fluid sample, the presence of the analyte is detected by determining the resulting change in refractive index at a solid optical surface in contact with the sample, which change is caused by the analyte involvin... | 06/24/1997 |
| 5610706 | Analysis system An analytical system for analyzing a liquid sample includes structure defining an analysis region with an inlet and an outlet, a polychromator system disposed in sensing relation to the analysis region, structure defining a sample inlet port, and structur... | 03/11/1997 |
| 5521698 | Analysis system An analytical system for analyzing a liquid sample that includes structure defining an analysis region with an inlet and an outlet, a spectrometer system disposed in sensing relation to the analysis region, structure defining a sample inlet port, and stru... | 05/28/1996 |
| 5513002 | Optical corona monitoring system An instrument system for monitoring corona and like conditions of electrical equipment such as generators includes an optical probe which receives light from a plurality of different areas in the equipment and separately conveys the light acquired from ea... | 04/30/1996 |
| 5408306 | Rotating disk electrode method and apparatus for multi-elemental determination of concentration of particles in used oil Spectrometric analysis for determining the elemental concentration of various wear metals, contaminants and additives present in a fluid sample for condition monitoring and preventive maintenance. RDE spectroscopy method and apparatus includes use of rotr... | 04/18/1995 |
| 5363189 | Spectroscopic analysis method and analyzing system A plurality of elements in a sample are specified as monitoring elements. Each time at a exciting the sample, the light intensity of the line of the monitoring elements and the measured elements is detected and memorized. From the memorized data, the dist... | 11/08/1994 |
| 5333487 | Spark-excited fluorescence sensor A spark-excited fluorescence sensor (10) is provided which enables monitoring of various gas species (14), such as H2, COx, NOx, N2, NHx and hydrocarbons added to a system as source fuels and/or additive agents,... | 08/02/1994 |
| 5303025 | Emission spectrochemical quantitative analysis method and apparatus A quantitative analysis of the constituents in a specimen and being classified by the conditions of the constituents in the specimen, using a spectroscopic analysis is made by exciting the specimen a number of times for emission, detecting the light inten... | 04/12/1994 |
| 5285251 | Apparatus and methods for optical emission spectroscopy A spark generator suitable for use in an optical emission spectrometer, and capable of generating a spark in a spark gap formed between an electrode and a sample to be analyzed, comprises a generator for generating a current of programmable amplitude in t... | 02/08/1994 |
| 5284533 | Method for the preparation of reference samples for spectrographic analysis A method is disclosed for the preparation of metal reference samples for spectrographic analysis. The method consists of producing a substantially cylindrical preform or blank by spray deposition, followed by the consolidation of the blank in the form of ... | 02/08/1994 |
| 5278629 | Atomic emission spectrometry A method and apparatus of atomic emission spectrometry includes confining a solution within an emission chamber for on-line analysis or individual sample analysis. An electrical discharge created within the liquid to directly excite an internal portion of... | 01/11/1994 |
| 5216482 | Apparatus for emission spectrochemical analysis Apparatus for emission spectrochemical analysis of a sample containing elements to be analyzed, wherein the sample is cyclically excited with relatively high energy to vaporize the sample elements and successively with relatively low energy to cause the v... | 06/01/1993 |
| 5172183 | Glow discharge atomic emission spectroscopy and apparatus thereof An improved glow discharge atomic emission spectroscopy method and apparatus is offered in which the introduction of a rare gas into a glow discharge tube is temporarily cut off and after the inside of the glow discharge tube is maintained at a higher deg... | 12/15/1992 |
| 5168323 | Device and method for determining impurities in a gas A device for determining small amounts of impurities in gases comprises a measuring cell in which an arc is generated with a low frequency alternating voltage source between two electrodes. The emission spectrum of the arc is observed by means of interfer... | 12/01/1992 |
