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| Number | Title | Issue Date |
| 4692935 | Automatic steel analysis apparatus An automatic steel analysis apparatus for analyzing the composition of steel materials by carrying out an element analysis using an X-ray excited energy dispersion type fluorescent analysis in the conveying path of the steel materials. A movable housing i... | 09/08/1987 |
| 4680716 | Automatic method and apparatus for dosing samples In an automatic sample-dosing method and machine a "bead" is formed which is to be analysed by X-ray fluorescence with, the mixture being dosed in three stages: feeding with flux material (lithium tetraborate), feeding with sample material, and feeding wi... | 07/14/1987 |
| 4660859 | Process for incorporating a novel nuclear signature on currency which permits easy authentication at a later date A new process for marking currency to permit easy and positive authentication at a later date comprising exposing a small region of the currency to bombardment by high energy neutrons for a short period, treating the exposed small region with a chemical r... | 04/28/1987 |
| 4612660 | Time resolved extended X-ray absorption fine structure spectrometer The present invention relates to an X-ray spectrometer for obtaining EXAFS data from a target material. The target material is exposed to incident pulsed synchrotron/X-ray radiation having a selected range of continuous spectrum and intensity suitable for... | 09/16/1986 |
| 4577338 | X-Ray fluorescence spectrometer and method of calibrating the same X-ray fluorescence spectrometer for determining the sulfur content of oil and other matrices, and method of calibrating the same. The spectrometer comprises a pulse height analyzer and a computer for analyzing the energy spectrum of photons emitted by a s... | 03/18/1986 |
| 4577337 | X-Ray fluorescence testing of laminate structures An X-ray fluorescence method and apparatus of detecting subsurface impact caused delaminations and cracks in cloth and epoxy-catalyst laminates which method and apparatus permit nondestructive testing and evaluation of the existance, location, parameters ... | 03/18/1986 |
| 4572667 | Fluorescent air data measurement device Induced fluorescence of air molecules is used to determine air data parameters such as barometric altitude. The air molecules at a sample location are caused to fluoresce by means of a suitable energy source. A detector having an effective field of view i... | 02/25/1986 |
| 4541107 | Moving X-ray mask with spiral window An X-ray system includes an X-ray source directing X-radiation on a first path through a subject to an X-radiation receptor which responds to X-rays to direct light radiation on a secondary path to a light image plane. In either path or both paths is a ro... | 09/10/1985 |
| 4538290 | Apparatus for detecting an abnormality in paperlike material An X-ray generating apparatus for detecting an abnormality in paperlike material, wherein the paperlike material is irradiated by X-rays and the secondary X-ray from the paperlike material is detected and compared against an X-ray emission standard to det... | 08/27/1985 |
| 4485308 | Photo detection system A photo detection system is described utilizing an x-ray source to produce light emission on one or more phosphor materials being used to mark or tag various objects. More particularly, x-ray excitable phosphors are contained in a suitable medium such as ... | 11/27/1984 |
| 4484331 | Regulator for bias current of semiconductor laser diode Current regulator circuits using electrical feedback to stabilize the bias currents of semiconductor laser diodes are disclosed. In these electrical feedback circuits laser diode current is sensed with negative-temperature-coefficient resistance to develo... | 11/20/1984 |
| 4461017 | Fluorescent X-ray device A flourescent x-ray device for irradiating x-rays to a sample so that flourescent x-rays emitted from the sample can be detected is described. A stationary fixed collecting plate is used instead of the movable reflecting plate employed in the prior art. T... | 07/17/1984 |
| 4445225 | Encoding scheme for articles A scheme for encoding an article involves marking the article with a first material of at least one element, at least one compound of at least one element or a mixture located at a predetermined position on the article. The article is also marked with a s... | 04/24/1984 |
| 4393512 | Hyper-filter-fluorescer spectrometer for x-rays above 120 keV An apparatus utilizing filter-fluorescer combinations is provided to measure short bursts of high fluence x-rays above 120 keV energy, where there are no practical absorption edges available for conventional filter-fluorescer techniques. The absorption ed... | 07/12/1983 |
| 4365156 | Tunable θ-2θ device A tunable monochromator selects a narrow range of wavelengths from a broadband source of radiation, such as a synchrotron X-ray source, visible light, etc. Wavelength selectivity is obtained by Bragg reflection from crystal surfaces or by diffraction grad... | 12/21/1982 |
| 4355395 | Injection lasers Apparatus for stabilizing output characteristics of an injection laser has a light sensitive device for producing an electrical signal indicative of the d.c. output light level of the laser. The electrical signal is compared with a reference signal to pro... | 10/19/1982 |
| 4317035 | Gold monitoring procedure A gold plating process is described in which gold concentration is monitored by a radioactive excitation procedure. This procedure for measuring gold concentration requires no chemical manipulation and yields immediate results. The procedure can be adapte... | 02/23/1982 |
| 4228512 | Nuclear pulse counting apparatus and technique A nuclear pulse counting experiment, such as typified by the art of X-ray fluorescence empolys a multichannel analog to digital converter (ADC) which is interfaced with a microprocessor to yield sample/matrix concentration data, as an illustrative example... | 10/14/1980 |
| 4219092 | Automatic guidance apparatus The invention relates to apparatus for automatically guiding a moving object such as a vehicle along a pre-determined path, the apparatus including two detectors which are mounted in a spaced apart relationship on the object, the detectors being responsiv... | 08/26/1980 |
| 4179100 | Radiography apparatus Radiography apparatus including radiation generating means, collimator means interposed between the radiation generating means and an object to be exposed to radiation, scintillator means disposed on the opposite side of the object from the radiation gene... | 12/18/1979 |
| 4178513 | Art object analyzer An apparatus for analyzing certain properties of an object with a beam of radiation capable of emitting fluorescent x-rays by (1) aligning a pivotally mounted radiation-emitting generator with a pivotally mounted radiation detector relative to a specific ... | 12/11/1979 |
| 4136778 | Linen sorter A method, system, and attachment for sorting articles, such as laundry or the like whereby each article includes as a part thereof a quantity of each of a number of different materials of the type which each produce secondary radiation at a characteristic... | 01/30/1979 |
| 4110625 | Method and apparatus for monitoring the dose of ion implanted into a target by counting emitted X-rays Practice of this disclosure obtains a measure of the dose or fluence of implanted ions into a target for device fabrication by monitoring emitted X-rays. Illustratively, ion beams of B+, P+ or As+ have been implanted into ... | 08/29/1978 |
| 4104519 | Method and apparatus for retrieval of exposure information from film images A method for retrieving exposure information from film images includes selecting an exposed and developed photographic emulsion, regionally bombarding the emulsion with X-rays, regionally measuring and recording the resultant X-ray fluorescence therefrom.... | 08/01/1978 |
| 4085329 | Hard X-ray and fluorescent X-ray detection of alignment marks for precision mask alignment The specification describes a process wherein short wavelength or "hard" x-rays (less than about 4 Angstroms) are used to align a semiconductor processing mask with a semiconductor wafer without the requirement for thinning the wafer to permit the x-rays ... | 04/18/1978 |
| 4029963 | X-ray spectral decomposition imaging system Projection measurements are made of the transmitted x-ray beam in low and high energy regions. These are combined in a non-linear processor to produce atomic-number-dependent and density-dependent projection information. This information is used to provid... | 06/14/1977 |
| 4015124 | Determining the concentration of sulphur in coal This invention relates to a method for determining the concentration of sulphur in coal and to apparatus which enables this method to be put into practice. The method involves measuring the intensities of the X-ray fluorescent radiations from iron and sul... | 03/29/1977 |
| 3984680 | Soft X-ray mask alignment system An alignment system for aligning one or more soft X-ray lithographic masks with respect to a substrate to be exposed in a soft X-ray lithographic apparatus includes alignment marks on the masks and corresponding alignment marks on a substrate, and a means... | 10/05/1976 |
| 3982126 | Method and device for determining particle size categories of particles dispersed in a liquid In order to determine the size category or categories of particles dispersed in a liquid a sample flow is passed through a flow channel of sufficient length to allow, at a certain point, a stable flow with a predetermined flow velocity distribution over t... | 09/21/1976 |
| 3937953 | Non-contactive proximity sensor system utilizing nucleonic radiation fluorescence A proximity sensor utilizing nucleonic radiation fluorescence to detect the presence, position and/or distance of a target object from a monitoring object. The inventive system has particular application in collision avoidance systems for subsatellites, f... | 02/10/1976 |
