Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 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 emission gas sample, via fluorescence of the mercury within the gas sa... | 04/08/2008 |
| 7268889 | Phase-resolved measurement for frequency-shifting interferometry A frequency-shifting interferometer gathers intensity data from a set of interference patterns produced at different measuring beam frequencies. A periodic function is matched to the intensity data gathered from the set of interference patterns over a corresponding ... | 09/11/2007 |
| 7199875 | Furnace A furnace, in particular for an electro thermal atomization device of an atom absorption spectrometer, has a heatable heat duct in which is mounted a trial platform. The trial platform is essentially basin-shaped with radially inward-turned rims, at least at its fre... | 04/03/2007 |
| 7138461 | Fluorine-containing copolymer molding material A molding material consisting of a fluorine-containing copolymer, which has a metal elution index η of at most 10 as the total amount in ng of metals of Na, Mg, Cu, Cr, Ni, K, Ca and Fe per 1 g of the molding material, as obtained by elution analysis of the molding... | 11/21/2006 |
| 7133131 | Atomic absorption spectrometer An atomic absorption spectrometer is disclosed which includes a monochromater (30) and an optical path defined by a toric mirror (14), a flat mirror (16), a flat mirror (20), a flat mirror (24), a toric mirror (22) and a fur... | 11/07/2006 |
| 7130044 | Atomic absorption spectrophotometer At the time of measurement of a sample, before a sample is introduced into a graphite tube, signal voltages which would be detected by a photomultiplier in connection with all programmable combinations of atomizing temperatures of a graphite tube, widths of entrance... | 10/31/2006 |
| 7105042 | Apparatus for separating aerosols or particles from gases An apparatus for separating aerosols or particles from a gas stream composed of a flow housing through which the gas containing the components to be separated flows, a separator, which is arranged in the flow housing, and a corona electrode, which is provided upstre... | 09/12/2006 |
| 7090718 | Device for collecting charged particles with the aid of an ionizer for purposes of analysis A device is provided for collecting particles from a gas for subsequent analysis with a particle analyzer. The device includes an ionizer with at least one ion-emitting unit which emits ions and a collector for collecting particles charged by the ions. An electrical... | 08/15/2006 |
| 7092077 | System and method for monitoring contamination The present invention provides passive sampling systems and methods for monitoring contaminants in a semiconductor processing system. In one embodiment, that passive sampling system comprises a collection device in fluid communication with a sample line that provide... | 08/15/2006 |
| 7050165 | Atomic absorption spectrophotometer A main unit, a lamp chamber, a graphite furnace analyzing section, a flame analyzing section, and a flame gas controller are sequentially placed from right to left. An autosampler is placed on the top of the lamp chamber. A housing section for a transformer and a po... | 05/23/2006 |
| 7016039 | Purging light beam paths in optical equipment Purging of a light beam path in an effective manner that minimizes the affect of the purging requirement on system throughput. In one embodiment, the invention is incorporated into a birefringence measurement system that has several components for directing light th... | 03/21/2006 |
| 6960477 | Closed heat-decomposing appliance, pretreatment method of sample using it, analytical method and device therefor Disclosed are a closed heat-decomposing appliance comprising a heating section with one side closed and other side having common ground portion, screw portion or O-ring-mounted portion and a closed introducing section that allows to connect to this heating section a... | 11/01/2005 |
| 6894776 | Furnace A furnace, in particular for an electro thermal atomization device of an atom absorption spectrometer, has a heatable heat duct in which is mounted a trial platform. The trial platform is essentially basin-shaped with radially inward-turned rims, at least at its fre... | 05/17/2005 |
| 6715371 | Method of testing an airbag module The present invention relates to a method of testing an airbag module for a vehicle and, particularly, but not exclusively, to a method of testing an airbag module for a motor vehicle such as a car. A method of testing an airbag module is provided in which said modu... | 04/06/2004 |
| 6643016 | Multiple pathlength spectrophotometer A spectrometer or multiple wavelength absorbance detection method and apparatus providing improved accuracy for an array of measurements at different wavelengths. The spectrometer utilizes a multiple wavelength illumination system with an array of indepen... | 11/04/2003 |
| 6552786 | Electrothermal furnace for an atomic absorption spectrometer The present invention relates to a thermoelectrical furnace for an atomic absorption spectrometer for converting a sample to be analyzed into the atomized state, the furnace comprising a first hollow furnace part connected to a first pair of electrodes an... | 04/22/2003 |
| 6545757 | Atomizing device for dissolved and solid samples Atomizing device for atomic absorption spectroscopy according to the Zeeman method, wherein a tubular atomizing furnace which is transversely heated via wings and with horizontally oriented furnace tube is located with its furnace wings between vertically... | 04/08/2003 |
| 6545756 | Method for the thermionic atomization of a sample and device for realizing the same The present invention pertains to the construction of analytic instruments and can be used for analyzing natural and industrial water, biological samples, geological samples and air. The purpose of this invention is to reduce substantially the power used ... | 04/08/2003 |
| 6391647 | Method and a device for atomic absorption spectroscopy The present invention refers to a method for atomic absorption spectroscopy of an analyte which is contained in a sample to be analyzed and which is converted into free atoms in an absorption volume of an atomizer, said method comprising the steps of (a) ... | 05/21/2002 |
| 6222626 | Atomic absorption spectrometer The invention relates to an atomic absorption spectrometer, comprising a measuring light path leading from at least one light source emitting line radiation corresponding to at least one element to be detected, through an atomization means for atomizing a... | 04/24/2001 |
| 6141094 | Sensitive laser spectroscopic detection based on three-dimensional nonlinear four-wave mixing Devices and techniques for performing highly-sensitive spectroscopic measurements in a sample vapor by using a four-wave-mixing optical system and an atomizer chamber. One embodiment of a spectrometer comprises a gas-phase atomizer having an atomizer cham... | 10/31/2000 |
| 6020958 | Atomic absorption spectrophotometer An atomic absorption spectrophotometer possessing an electrical heating unit which includes a graphite tube for atomizing a sample by heating the sample; a light emitting unit for emitting measuring light and irradiating the atomized sample with the measu... | 02/01/2000 |
| 5981912 | Electrothermal atomization means for analytical spectrometry An electrically heatable hollow-body furnace with a secondary surface on which an analyte of a sample can be condensed prior to being atomized. The furnace is constructed in two sections which are capable of being electrically heated independently of one ... | 11/09/1999 |
| 5978082 | Atomic absorptiometer and a metal specimen atomic vapor generation apparatus used in the atomic absorotiometer The object of this invention is to provide an atomic absorptiometer and a metal specimen atomic vapor generation apparatus used in the atomic absorptiometer, which enable a light absorption measurement based on the Zeeman effect highly capable of backgrou... | 11/02/1999 |
| 5949538 | Longitudinally or transversely heated tubular atomizing furnace A transversely or longitudinally heated atomizing furnace for flameless atomic absorption spectrometry. The atomizing furnace has a tube furnace segment and a specimen support disposed in the tube furnace segment. The specimen support is rigidly fixed in ... | 09/07/1999 |
| 5910838 | Method of determining concentrations by means of continuous-spectrum atomic absorption spectroscopy In a method of determining concentrations by means of atomic absorption spectrometry, the absorption of structured background is determined in a graphite furnace.... | 06/08/1999 |
| 5866431 | Electrothermal atomization means for analytical spectrometry An electrically heatable hollow-body furnace with a secondary surface on which an analyte of a sample can be condensed prior to being atomized. The furnace is constructed in two sections which are capable of being electrically heated independently of one ... | 02/02/1999 |
| 5861948 | Atomic absorption spectrophotometer The invention relates to optical instrment engineering. It is suggested that a linear solid state detector (photodiode array detector, charge coupled device, charge transfer device) that is positioned along the image of entrance slit of the monochrometer ... | 01/19/1999 |
| 5822059 | Atomic absorption spectrophotometer and graphite tube type cuvette used for the same The invention intends to provide an atomic absorption spectrophotometer which can establish a uniform heat distribution during heating of a sample and can improve analysis accuracy and analyzing efficiency. For this purpose, a graphite tube type cuvette m... | 10/13/1998 |
| 5786887 | Atomic absorption spectrophotometer and atomic absorption spectrochemical analysis A light beam emitted by a hollow cathode lamp is concentrated on a central portion of an electrothermal sample atomizing apparatus by a concave mirror. The light concentrated on the central portion of the electrothermal sample atomizing apparatus is furth... | 07/28/1998 |
| 5742388 | Atomic absorption spectrophotometer The invention relates to optical instrment engineering. It is suggested that a liner solid state detector (photodiode array detector, charge coupled device, charge transfer device) that is positioned along the image of entrance slit of the monochrometer b... | 04/21/1998 |
| 5708502 | Random access charge transfer devices for multi-element atomic absorption spectrometry and temporal shifting A simultaneous multi-element atomic absorption spectrometry system includes a light source, a furnace, a spectrometer, and a random access charge transfer device. The furnace creates vapors of a sample contained within the furnace. The light source passes... | 01/13/1998 |
| 5708507 | Temperature resolved molecular emission spectroscopy of materials System and method for temperature resolved molecular emission spectroscopy of solid, liquid or gaseous materials are described wherein a sample is vaporized and decomposed, and the vaporous sample is transported into a combustion flame; a spectrum of inte... | 01/13/1998 |
| 5638166 | Apparatus and method for rapid detection of explosives residue from the deflagration signature thereof Apparatus and method for rapid detection of explosives residue from the deflagration signature thereof. A property inherent to most explosives is their stickiness, resulting in a strong tendency of explosive particulate to contaminate the environment of a... | 06/10/1997 |
| 5594547 | Multielement atomic absorption spectrometer and measurement method using such an atomic absorption spectrometer The invention relates to a multielement atomic absorption spectrometer for simultaneously performing measurements for determining both one element and a plurality of elements under optimum conditions. The atomic absorption spectrometer comprises at least ... | 01/14/1997 |
| 5579104 | Apparatus applied to spectroscopy A spectroscopic apparatus applicable to both ICP (inductively coupled plasma) emission spectroscopy and atomic absorption spectrometry is provided. The spectroscopic apparatus includes a sample unit on which a plasma torch for ICP emission spectroscopy an... | 11/26/1996 |
| 5568254 | Low pressure discharge tube and atomic absorption spectrophotometer using the same In an atomic absorption spectrophotometer utilizing the direct Zeeman's method, plural lamps are installed in the light source unit in order to enhance the versatility and enable continuous analyses. Accordingly, a plurality of low pressure discharge tube... | 10/22/1996 |
| 5567945 | Compact atomic absorption analyzer A compact atomic absorption analyzer includes a xenon flashlamp, processing circuits, optics, electronic heating apparatus and a photomultiplier. A sample to be tested is heated using electronic (radio frequency) heating apparatus within the optics to sub... | 10/22/1996 |
| 5546182 | Method for determination of trace metal impurity in fluorine-containing polymer and process for production of fluorine-containing polymer using the method In order to quantitatively determine a metal impurity contained in a fluorine-containing polymer directly, and also to improve a detection limit of the metal quantitative determination, there is provided a method for the quantitative determination of a tr... | 08/13/1996 |
| 5434665 | Atomic absorption analyzing apparatus with adjustable carrier gas flow rate A sample disposed in a graphite tube in a furnace is subjected to thermal treatment at successive stages, drying, ashing and atomization and atomic absorption due to an element contained in the sample is measured. Amounts of inert carrier gas supplied to ... | 07/18/1995 |
