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4716121 |
Fluorescent assays, including immunoassays, with feature of flowing sample
An assay method and apparatus employing total internal reflection of excitation radiation at an activated region on the surface of an optically conductive rod or fiber surrounded by a liquid phase...
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4675728 |
Apparatus for performing internal inspection of piping
A carriage is designed for transport into and out of a pipe, carrying appropriate lighting and a television camera with a lens cover movable from a remote location between covering and uncovering...
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4652395 |
Taggant composition
Resin based, film-forming compositions such as adhesives are coded for identification by dispersing insoluble fluorescent taggant particles within the resin phase of the composition. The taggant is...
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4645618 |
Water soluble floors
Water soluble fluors useful in enhancing images obtained in autoradiography have the general formula: [F] x [B] y [S] z F is a moiety which acts as a fluor, e.g., a dehydro derivative of a...
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4641518 |
Process for the non-destructive inspection of surface defects
In a process for the non-destructive inspection of surface defects, initially a solution with one or more dyes substantially having no emission under UV-light are applied and excess solution is...
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4621193 |
Fluorescent penetrant crack detection
A method for detecting surface defects in parts by entrapped fluorescent dye penetrant uses a novel applicator which conveys liquid fluorescent dye penetrant by capillary action from a reservoir...
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4605857 |
Tensile tester
A tensile tester especially useful for colored specimens having pairs of projector-optic arrangements for detecting the presence of bench marks on a specimen and each including an ultraviolet lamp...
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4582809 |
Apparatus including optical fiber for fluorescence immunoassay
A method and apparatus for fluorescent immunoassay utilizes total internal reflection at the interface between a solid phase and a liquid phase of lower index of refraction to produce an evanescent...
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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...
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4536654 |
Device for detecting flaws on a piece
A device automatically reads indications of flaws in a piece using the swing method. An ultraviolet beam illuminates the piece to be checked after successive reflections on a separating mirror and...
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4536322 |
Fluorescent corrosive fluoride solution
A composition of matter including an aqueous solution of hydrofluoric acid or ammonium fluoride and a dye that fluoresces when illuminated by ultra-violet light. Spilled corrosive fluoride...
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4436999 |
Structural defect detection
A method and composition for the detection of microdefects in the surface layer of a substrate is disclosed. The composition utilizes dimethylsulfoxide as a primary solvent and a fluorescent...
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4437010 |
Method and apparatus for analyzing conditioner on a bowling lane surface
A method and apparatus for analyzing and evaluating the thickness and distribution of conditioning material applied to the surface of a bowling lane, wherein the conditioning material is treated...
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4428672 |
Variable threshold workpiece examination
An automated system for examining a workpiece 6 treated so that flaws are revealed by concentrations of indicator on its surface scans the workpiece surface to provide an output signal...
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4400618 |
Method of detecting and analyzing damage in printed circuit boards
A method of detecting flaws in a printed circuit board laminate having drilled holes wherein a penetrating solution containing a UV fluorescing dye is applied to the laminate to fill the drilled...
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4394577 |
Displacement measurement device and method
At least two types of reflective or emissive materials are applied in alternating manner to a pile or other object to be moved. Ultraviolet energy is emitted toward the materials and reflections or...
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4392982 |
Extended biodegradable dye penetrant composition
A liquid dye penetrant composition for use in non-destructive testing of objects to locate cracks and other defects or flaws therein, said composition comprising (1) a nonionic surfactant, such as...
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4363965 |
Detection and identification method employing mossbauer isotopes
A detection/identification method for determining the presence of a Mossbauer isotope-containing taggant in a carrier material, e.g., explosives, weapons, currency, tax stamps, or identification...
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4343782 |
Cytological assay procedure
Disclosed is a method ofbioassay based on the detection of changes in the membrane potential of individual cells. A cell suspension is incubated with a solution of a substance capable of affecting...
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4341757 |
Stable isotopic immunoassay method employing non-radioactive selenium label
There is disclosed a "cold", i.e., non-radioactive (stable) isotope method for the immunoassay of biological compounds. The method uses selenium as the tracer label in compounds which compete in...
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4341997 |
Magnetic particle inspection process useable with simultaneous illumination by ultra-violet and white light
A method and composition for non-destructive testing of a magnetizable workpiece in which the surface of the workpiece is coated with a composition containing discrete magnetic particles consisting...
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4341957 |
Fluorescent antibody composition for immunofluorometric assay
A new family of fluorescent antibodies (FAB) and a method for their synthesis is disclosed for use in an apparatus and method wherein the effects of background fluorescence are virtually eliminated...
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4331871 |
Fluorescent detection of flaws
In a method for detecting flaws in the surface of a workpiece, initially microcapsules containing a fluorescent dye are deposited on the surface. After removal of excess microcapsules from the...
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4329986 |
Treatment of an extracorporeal stream of blood with a dialyzable chemotherapeutic and a fluorescable tracer
A therapeutic composition suitable for extracorporeal treatment of whole blood comprises a dialyzable chemotherapeutic agent and a dialyzable fluorescable tracer means. The removal rate of the...
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4327155 |
Coated metal structures and method for making
Dual coated erosion resistant metal or ceramic structures are provided having an interior adherent indicating metallic or ceramic layer containing a UV sensitive phosphor and an exterior ceramic or...
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4327120 |
Method for coating a metal substrate
A plasma or flame spraying method is provided for applying a ceramic or metallic UV sensitive indicating coating onto a metal substrate. Particle size control of the ingredients used in the plasma...
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4323785 |
Method of and apparatus for observing sheet surfaces for traces of fluorescent materials thereon
An inspection system for ascertaining the surface of a glass sheet that contacted the molten metal bath during production of the glass by the float process and thus has traces of fluorescent metal...
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4317996 |
Methods for detection of roof leaks and areas or zones of the leakage
Methods for detection of the presence or absence of water leaks in building roofs and for tracing any leaks to the zone or area thereof in the roof by applying on all or part of the roof...
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4302678 |
Fluorescent standard for scanning devices
A standard specimen for calibrating an ultraviolet scanning system of the type used to detect surface flaws in workpieces by penetrant testing including a piece of glass which has the...
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4272505 |
Competitive binding analysis by fluorescence
Thyroid hormones such as thyroxine and triiodothyronine are assayed in biological fluid samples by a competitive binding analysis in which a fluorescent label is used. Upon formation of complexes,...
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4272506 |
Purification of reagents by disulfide immobilization
A method is provided for preparing immunoassay reagents involving labeled members of specific binding pairs substantially enriched relative to contaminating labeled materials. The method involves...
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4267449 |
Testing the integrity of liquid containing hermetically sealed containers by the use of radioactive markers
A method for detecting leaky ampules filled with a liquid such as a parenteral solution. The ampules to be tested are immersed in a solution containing a short-lived radionuclide, and a pressure...
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4261968 |
Fluorescence quenching with immunological pairs in immunoassays
Immunoassays are provided employing antibodies and fluorescer-quencher (F-Q) chromophoric pair, wherein one or both of the chromophoric pair are bonded to antibodies. Depending on the particular...
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4259574 |
Microanalysis by pulse laser emission spectroscopy
A system for detecting and identifying the composition of a material, such as semiconductor wafers and chips, subject to one or more stages of processing. The material is laser irradiated to induce...
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4254097 |
Method of detecting antibodies to human thyroglobulin
A method of detecting antibodies to native deoxyribonucleic acid (n-DNA), anti-nuclear antibodies, antibodies to non-histone containing protein, rheumatoid factors, antibodies to thyroglobulin, and...
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4252783 |
Reducing fluorescent background in fluorescent immunoassays
Background fluorescence which interferes with the measurement of an analyte in fluorescent immunoassays in serum samples is substantially diminished by treating the serum sample with a sufficient...
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4251514 |
Insolubilized deoxyribonucleic acid (DNA)
A method of detecting antibodies to native deoxyribonucleic acid (n-DNA), anti-nuclear antibodies, antibodies to non-histone containing protein, rheumatoid factors, antibodies to thyroglobulin, and...
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4250382 |
Coat detection method
Disclosed is a method of detecting a cured silicone coating applied to a paper substrate or the like in web form, comprising adding an effective amount of a fluorescent pigment to the silicone...
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4250383 |
Thread inspection apparatus and method
A method of and apparatus for inspecting the threads of tubular elements for flaws, cracks and the like are disclosed. The invention is particularly useful in performing thread inspections of the...
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4248854 |
Production of antibody toward asbestos and immunoassay therewith
The invention provides a reaction product of chrysotile asbestos with an antigenic serum protein, preferably albumin, that has particular utility as an antigen in producing antibody to asbestos....
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4238384 |
Method of incorporating additives in polymeric materials
Additives, such as stabilizers, antioxidants, anti-static agents etc., are intimately blended with an irradiation-responsive substance, such as an optical brightener, and incorporated in a...
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4237379 |
Method for inspecting electrical devices
A method of inspecting electrical devices such as integrated circuit devices which have conductors covered by a protective layer of passivating material to determine the quality of the protective...
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4235869 |
Assay employing a labeled Fab-fragment ligand complex
Methods and compositions are provided for improved protein binding assays by preparing compositions having indirectly labeled ligands substantially free of label conjugated to materials other than...
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4231750 |
Methods for performing chemical assays using fluorescence and photon counting
Improved methods for determining very low concentrations of substances present in fluid samples are provided by employing light emitting tracer compounds and (1) counting the photons emitted...
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4227081 |
Method of evaluating the integrity of the outer carbon layer of triso-coated reactor fuel particles
This invention relates to a method for determining defective final layers of carbon on triso-coated fuel particles and the like. Samples of the particles are subjected to a high temperature...
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4225783 |
Determination of microbial cells in aqueous samples
The present invention encompasses a method for enumerating microbial cells in an aqueous test sample comprising: fluorescently labeling the microbial cells in test sample intermixing a known amount...
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4208583 |
Detection of analysis of particulate material in fluid streams
Apparatus for the detection and analysis of particulate material carried in a fluid stream comprising a sampling device through which the fluid stream may be passed, said sampling device...
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4197104 |
Magnetic tag process
Ferrite particles having a plurality of distinct Curie temperatures are encapsulated within a glass matrix to provide tagging material especially useful in identifying explosive materials even...
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4191885 |
Method for determining weight of molten metal in situ
Method for rapid and accurate weight determination of molten metal in a slag-containing bath preferably without any necessity for direct gross weighings in a hostile steel works environment or...
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4186304 |
Extender for dye penetrant composition
A liquid dye penetrant composition for use in nondestructive testing of objects to locate cracks and other defects or flaws therein, said composition comprising (1) a nonionic surfactant, such as...
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