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4172224 |
Process for the detection of micro-cracks
A process for the nondestructive testing of ceramic objects to detect the presence of defects and micro-cracks in the surface in which a solution of silver nitrate is applied to the surface of the...
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4160016 |
Receptor fluorescent immunoassay
A novel sensitive method for determining qualitatively and quantitatively the presence of a wide variety of physiologically active organic compounds (ligand) and their receptors is provided. The...
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4152592 |
Water washable dye penetrant composition and method for utilizing same
A water washable substantially biodegradable dye penetrant composition having excellent sensitivity and high stability, for use in non-destructive testing of objects to locate voids and defects...
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4146790 |
Apparatus for converting light energy into heat energy by light concentration by means of fluorescent layers
The present invention provides an apparatus in which one or more light concentrators comprising thin layers of transparent solid or liquid materials with embedded fluorescent centers are combined...
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4146604 |
Differential counting of leukocytes and other cells
A novel composition of matter, process and apparatus is provided for distinguishing and absolutely counting leukocytes, erythrocytes, reticulocytes, and other cells as well as differently counting...
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4144452 |
Fluorometric system, method and test article
A fluorometric system to determine the kind and amount of substances derived from a biological fluid (e.g., serum or urine) or tissue in which the substances to be detected (e.g., antigen,...
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4131064 |
Tagging particles which are easily detected by luminescent response, or magnetic pickup, or both
Small particles for tagging of objects to be identified comprise luminescent material plus other material which provides information indicia for tagging purposes. Included in the tagging particles...
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4125144 |
Refractory material for labeling, which contains an activatable element
The present invention relates to a refractory materials used in processing molten metals comprising combining at least one of the refractory materials selected from the group consisting of SiO 2 ,...
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4124484 |
Developer composition and process for penetrant inspection
Dry developer composition in powder form and process for using same in the inspection of metal surfaces for cracks and defects open to the surface by the penetrant process. The powder composition...
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4087685 |
Fluorescent microanalytical system and method for detecting and identifying organic materials
A rapid, non-destructive system and method for insitu detection and identification of luminescent organic particulates or films on non-luminescent devices, such as semiconductor wafers and chips....
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4084091 |
Chromatographic method for determining additive concentration in gasoline
The approximate concentration of a carburetor additive in a motor fuel is determined by a paper chromatographic method.
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4077773 |
Method and apparatus for detection of monoalkylhalides
A method and apparatus for detection of monoalkylhalides is disclosed. This apparatus contemplates detection of extremely small traces of monoalkylhalides through the nucleophilic substitution of a...
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4071770 |
Method for evaluating perinatal lung maturity
Perinatal lung maturity is evaluated by determining the fluorescence polarization of a sample of pulmonary effluent containing pulmonary surfactant labeled with a fluorescent dye. The sample is...
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4069419 |
Dry developer composition for dye penetrant inspection and method for employing same
Dry developer composition in powder form for use in penetrant inspection of surface flaws in bodies, consisting essentially of silica, preferably fumed silica, e.g. the material marketed as...
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4054535 |
Variable sensitivity water washable dye penetrant
Variable sensitivity biodegradable water washable dye penetrant compositions for use in non-destructive dye penetrant inspection of parts, such compositions basically consisting essentially of an...
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4049568 |
Non-dripping heat resistant dye penetrant
Biodegradable water washable dye penetrant composition in the form of a gel for use in non-destructive dye penetrant inspection of parts, and which can be applied to part surfaces at varying angles...
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4044253 |
Non-destructive inspection of composite and adhesively bonded structures
Surface defects in composite and adhesively bonded structures that penetrate to a metal substrate are detected by applying a solution of 8-hydroxyquinoline to a surface of such a structure and...
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4035641 |
Liquid oxygen compatible biodegradable dye penetrant compositions and method of dye
Liquid oxygen-compatible water washable substantially biodegradable dye penetrant composition having excellent sensitivity and high stability, for use in non-destructive dye penetrant inspection...
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4025310 |
Method for reading a wet fluorescent surface
An improved method for the fluorometric measurement of a fluorescent label on a solid support surface in which the surface is read while coated with a continuous aqueous layer. For reading in a...
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4002905 |
Penetrant flaw inspection method
A water washable substantially biodegradable dye penetrant composition having excellent sensitivity and high stability, for use in non-destructive testing of objects to locate voids and defects...
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4000422 |
Method of luminescence detection of surface discontinuities
A method for detection of surface discontinuities by luminescence which consists in the successive treatment of the surfaces of materials subject to testing and inspection with the following...
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3995157 |
Surface flaw detection
Flaws in the surface of a physical object, such as cracks, breaks, and other physical discontinuities in metal surfaces are detected by inspection under ultraviolet irradiation after the surface...
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3981185 |
Postemulsifiable dye penetrant system and method for using same
Postemulsifiable dye penetrant inspection system and method employing substantially biodegradable dye penetrant compositions and emulsifiers, for use in non-destructive testing of objects to locate...
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3980884 |
Process and apparatus for determining the concentration of a suspension
A representative reading for the concentration of a suspension of luminous and magnetizable particles is provided in every case, even when luminous but non-magnetizable particles are also present....
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3971952 |
Method of detecting abnormal behavior of mammalian cells
Abnormal behavior of mammalian cells is detected in vitro by measuring the fluidity or an associated phenomenon of the lipid layer of the cell surface membrane. Abnormal behavior of cells, in...
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3965360 |
Method for discriminating high-temperature red heated material
In heating a material radiant at high temperatures, such as a steel product, in a heating furnace, the said material is charged into the heating furnace to heat. A discrimination mark is previously...
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3965350 |
Dye penetrant method for detecting flows
A dye penetrant composition adapted to enter minute surface defects when applied over a workpiece surface, which consists essentially of an organic dye, preferably a fluorescent dye, in a lactam...
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3959650 |
Method for detecting and identifying allergy
A method is described for determining the presence of an antigen-specific antibody in a vertebrate. Effluvial tissue is exposed to antigens from known sources and is subsequently examined to detect...
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3958119 |
Method and device for evaluating penetrants
A method is provided for evaluating fluorescent penetrants in which a penetrant to be evaluated is applied to a bevelled edge of a laminate of adhesively bonded metal sheets, the edge having...
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3956630 |
Fluorimetric coat weight measurement
A method and apparatus is disclosed for the on-machine measurement of coat weights of coatings applied to paper webs or the like. The invention provides an accuracy of plus or minus 0.1 pound per...
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3950642 |
Method of inspecting shot peened surfaces for extent of coverage
The method of inspecting shot peened surfaces of a workpiece for the extent of coverage comprises coating the surface to be peened of a workpiece with a material containing a fluorescent dye and...
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3944828 |
Hydrophobic powdered developer for fluorescent penetrant inspection
A method for detecting surface discontinuities in a part which comprises applying a non-water miscible fluorescent penetrant to the part to permit the penetrant to enter and become lodged in...
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3939350 |
Fluorescent immunoassay employing total reflection for activation
Receptors are employed to which one or more fluroescent molecules are bound. When the receptors are bound to the epitopic sites on the surface and light of predetermined wave length is directed...
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3939092 |
Water washable dye penetrant and method for utilizing same
A water washable substantially biodegradable dye penetrant composition having excellent sensitivity and high stability, for use in non-destructive testing of objects to locate voids and defects...
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3929664 |
Water-washable inspection penetrant employing triglycerides and polyglycerides of fatty acids
A water-washable inspection penetrant composition and process in which a low-solubility fatty oil is used as the penetrant vehicle. The solvent liquids of the invention provide enhanced stability...
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3924125 |
Activated aluminum tracer tag
A method of treating a piece of aluminum and detecting the presence of the reated aluminum in an assembly without disassembly of the parts. The small piece of aluminum is made radioactive by...
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RE28605 |
Penetrant inspection process and compositions
Post-emulsifiable inspection penetrant compositions and process for using same, in which the penetrant liquid contains, in addition to an indicator dye, a solvent ingredient which acts to provide a...
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3916205 |
Differential counting of leukocytes and other cells
A mixture of dyes for differentially staining biological cells. A system for the automatic absolute counting of leukocytes, erythrocytes and reticulocytes and differential counting of leukocytes...
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3915886 |
Water washable dye penetrant composition and method for utilizing same
A water washable substantially biodegradable dye penetrant composition having excellent sensitivity and high stability, for use in non-destructive testing of objects to locate voids and defects...
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3912928 |
Permanently coded polymeric compound and method of coding and identifying same
A permanently coded polymeric compound and method of permanently coding and identifying same is provided and such method includes the steps of dispersing particles of a particular phosphor...
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3904545 |
Liquid dye penetrant composition containing a wax
Dye penetrant for detecting cracks and flaws in the surface of an object containing a wax, for example paraffin wax, a volatile solvent, preferably 1, 1, 1-tri-chloroethane, and a dye which is...
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3899450 |
Dye penetrant composition containing a volatile degreaser-type solvent
A liquid dye penetrant composition for detecting cracks and flaws in a specimen surface, consisting essentially of an N-alkyl-2-pyrrolidone, a dye soluble in said pyrrolidone and about 50 to 97...
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3896664 |
Enhanced stability water washable penetrant composition and process
A water-washable inspection penetrant composition and process in which a low-solubility solvent liquid is used as the penetrant vehicle. The solvent liquids of the invention provide enhanced...
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3891844 |
Process for nondestructively testing with radioactive gas using a chill set sealant
An article surface is nondestructively tested for substantially invisible surface voids by adsorbing a radioactive gas thereon. The adsorbed radioactive gas is disproportionately retained on those...
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3869610 |
Method of determining the amount of an isotopic mixture of noble gases present as a tag in a nuclear reactor fuel element
A predetermined small amount of krypton-85 is added to an isotopic mixture employed as a tag to identify a failed fuel element before this mixture is inserted into the void volume of the fuel...
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3864571 |
Method and Apparatus for Automatically, Identifying and Counting Various Cells in Body Fluids
The various types of cells in body fluids are automatically identified by measuring the area of each cell that is occupied by nucleus and cytoplasm and automatically comparing these measurements to...
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3857033 |
DETECTING MALIGNANT CELLS
Techniques for detecting malignant cells, especially useful in Papanicolau smear analysis, comprise placing the scrapings of epithelial cells from the cervix or oral cavity, obtained either as...
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3851171 |
METHOD FOR TRACING THE FLOW OF WATER IN SUBTERRANEAN FORMATIONS
A method for tracing the flow of water through a subterranean formation in which a water-soluble substituted poly(hydroxyalkyl) bis(triazinylamino)stilbene is added to the water at a selected point...
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3843891 |
DEVICE FOR EXAMINING MATERIALS OR FOR SURGICAL TREATMENTS BY GAMMA RAY IRRADIATION
A device for examining materials or treating human or animal patients by local gamma ray irradiation. A capsule containing gamma ray emitting material is mounted in a shielding block. A flexible...
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3839637 |
TEXTILE GUIDING AND MEASURING INDICIA
This invention relates to the impregnation of spaced courses of yarn in a fabric with a material which is not visible under daylight but which is visible only when subjected to ultra-violet light,...
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