Matches 151 - 200 out of 322 < 1 2 3 4 5 6 7 >
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5387836 Rare earth oxysulfide phosphor and high resolution cathode ray tube employing it  
A rare earth oxysulfide phosphor of the formula (Ln 1 -x-y La x Ln' y ) 2 O 2 S wherein Ln is at least one element selected from the group consisting of Y, Gd, Sc and Lu, Ln' is at least one...
5369331 Pigment-attached blue-emitting phosphor and color cathode-ray tube  
The present invention provides a pigment-attached blue-emitting phosphor having attached a blue pigment which has fastness and chemical stability and is excellent in reflection spectrum...
5363012 Pigment-attached blue-emmitting phosphor and color cathode-ray tube  
A pigment-attached blue-emitting phosphor comprising a blue-emitting phosphor and a blue pigment attached to the surface of the blue-emitting phosphor, said blue pigment being a CoO.ZnO.SiO 2 type...
5362470 Ultrafine gold and/or silver chalcogenide and production thereof  
A method for manufacturing an ultrafine gold and/or silver chalcogenide being used for the sensitivity speck seeding sensitization method is disclosed. The gold and/or silver compound, and a...
5330791 Method of reclaiming phosphor  
A method of reclaiming a phosphor from a recovered phosphor slurry containing carbon, a bichromate, and polyvinyl alcohol, comprises, (a) a decomposition treatment step of adding an alkali to the...
5312560 Rare earth phosphor  
Phosphors capable of emitting substantially white luminescent were represented by the following general formulae, (I), (II) and (III). (Y 1 -X-Y-Z Lu X Tb Y Sm Z ) 2 O 2 S (I) ...
5300316 Method of forming thin oxysulfide film  
In order to provide a thin oxysulfide film excellent in crystallinity and suitable for use as a luminescent layer of a thin film EL device and a thin fluorescent film for a CRT, a metal element is...
5296163 Method for producing a scintillator ceramic  
For manufacturing a scintillator ceramic of a rare earth oxisulfide, a pigment powder is compressed by single-axis hot-pressing to form a ceramic member having at least 99.9% of the theoretic...
5268614 Fluorescent lamps and improved yttrium-containing phosphors useful therein  
Yttrium-containing phosphors can be stabilized for use in an aqueous slurry containing a binder, which slurry can be used for coating fluorescent lamps by treating with ammonium dihydrogen...
5256725 Polymerizable luminescent fluid composition and its use  
Polymerizable luminescent fluid composition, characterized by the fact that it contains by weight (a) 30 to 45% of one or more luminescent mineral pigments, (b) 10 to 30% of silica particles,...
5217647 Method for preparing rare earth oxysulfide phosphor  
The present invention relates to a method for preparing a rare earth oxysulfide phosphor which comprises baking a mixture containing a rare earth oxide and/or a rare earth compound which becomes a...
5213894 Red pigment coated phosphor and process for manufacturing said phosphor  
A red pigment coated phosphor comprises a phosphor for color cathode ray tube and red pigment attached to said phosphor by an organic binder, wherein said organic binder is gellatin and casein. A...
5204582 Cathode ray tube with an oxysulfide phosphor  
There are disclosed a europium and terbium-coactivated phosphor having chemical composition formula (M l -x-y Eu x Tb y ) n D wherein M represent Y or Lu, D represents (Al l -z Ga z ) 5 O 12 ...
5171474 Method for treating a phosphor  
A method for treating a phosphor, which comprises treating a phosphor with an aqueous reagent solution comprising a chelating agent, an oxidizing agent and an alkali agent.
5166456 Luminescent phosphor composition  
A luminescent phosphor composition composed essentially of particles formed by fusion of a phosphor and a sulfate of alkaline earth metal.
5145743 X-ray intensifying screens with improved sharpness  
An improved X-ray intensifying screen comprising phosphor crystals having an effective amount of a light scattering particulate material, e.g., barium sulfate, strontium sulfate, calcium sulfate,...
5102579 Method for preparing sulfide phosphors  
A method for preparing a sulfide phosphor where a raw material mixture for a sulfide phosphor is placed in an almost closed first heat-resistant container and fired therein, the method being...
5096614 Process for producing a terbium-activated gadolinium oxysulfide X-ray phosphor wherein the green/blue emission ratio is controlled  
A process is disclosed for adjusting the green/blue emission ratio in a terbium-activated gadolinium oxysulfide x-ray phosphor, which comprises forming a uniform mixture of gadolinium oxide,...
5051204 Multi-element metal chalocogenide  
A novel, multi-element metal chalcogenide is disclosed which has the following general formula (I): X (1-a)x X' ax Y y Z z (I) wherein X stands for at least one element...
5043096 Thermoluminescent material including lanthanum, europium and cerium dopants  
Materials having thermoluminescent properties using a base material and three dopants and made from a process of mixing the parts together, heating the mixture to fuse together, grinding the mass...
5043097 Photoluminescent material for outputting reddish-orange light with reduced phosphorescence after charging  
A photoluminescent material used for detection of infrared light is prepared using a base material, first and second dopants, a carbonate of the base material, and a fusible salt. The base material...
5032316 Fluorescent composition  
A fluorescent composition composed of a mixture of a sulfide phosphor and a conductive material, the sulfide phosphor consisting essentially of a sulfide of the formula (Zn 1 -x, Cd x )S wherein x...
5032374 Preparation of metal sulfides  
Metal sulfides are prepared by reacting a compound of the metal and an oxygen-containing anion, with a source of carbonyl sulfide. The resulting metal sulfide is not contaminated by hydrogen, as in...
5013582 Process for providing hydrolysis resistant phosphors  
A process is disclosed for making a rare-earth oxysulfide phosphor resistant to hydrolysis, which comprises forming a slurry of the phosphor in water, adding to the slurry, a zinc compound in an...
5012098 Photomultiplier with infrared sensitivity  
An efficient energy upconversion unit is optically coupled to a photomultiplier. The upconversion unit receives incident infrared electromagnetic energy of longer wavelengths and emits, in...
5006366 Photoluminescent material for outputting orange light with reduced phosphorescence after charging and a process for making same  
A photoluminescent material used for detection of infrared light is prepared using a base material, first and second dopants, a carbonate of the base material, and a fusible salt. The base material...
4992302 Process for making photoluminescent materials  
Photoluminescent materials useful for detection of infrared light are prepared using a base material, first and second dopants, barium sulfate and a fusible salt. The base material is an alkaline...
4947465 Method of laser discrimination using stimulated luminescence  
A method of determining the nature of an unspecified laser source using the optically and thermally stimulated luminescence characteristics of a single MgS phosphor doped with either Ce, Sm or Eu,...
4940603 Thin film inorganic scintillator and method of making same  
An article, having particular use as a scintillator, includes a thin film of calcium sulfide on a substrate, such as alumina, quartz, sapphire, or most glasses. The material is first formed in bulk...
4925594 Hydrolysis resistance of rare earth oxysulfide phosphors produced by the addition of zinc in synthesis  
A process is disclosed for producing a hydrolysis resistant rare-earth oxysulfide phosphor which comprises forming a uniform mixture of one or more rare earth oxides, sulfur, alkali carbonate,...
4888129 Process for producing a terbium-activiated gadolinium oxysulfide x-ray phosphor having a specific green/blue emission ratio by the addition of zinc  
A terbium activated gadolinium oxysulfide phosphor having a green/blue emission ratio of from about 0.7 to about 2.0 is disclosed. A process is disclosed for producing this phosphor which comprises...
4879186 Photoluminescent materials for outputting reddish-orange light and a process for making the same  
Photoluminescent materials useful for detection of infrared light are prepared using a base material, first and second dopants and a fusible salt. The base material is an alkaline earth metal...
4877994 Electroluminescent device and process for producing the same  
An electroluminescent device comprising an electroluminescent layer capable of emitting light under application of AC voltage, the electroluminescent layer comprising strontium sulfide as a matrix...
4871471 Phosphor for cathode ray tube  
A novel phosphor for a cathode ray tube comprising Y 2 O 2 S:Eu containing barium fluoride is disclosed which has a long afterglow, maintains high emission efficiency, and has high color purity.
4863882 Rare earth oxysulfide ceramics  
Rare earth oxysulfide ceramic material prepared by covering the material with a foil of a metal selected from the group consisting of molybdenum, tungsten, platinum, and rhenium, sealing it into an...
4857228 Phosphors and methods of preparing the same  
Phosphors based on a crystalline matrix of an alkaline earth and a chalcogen together with an activator system are prepared by a process which preferably includes exposure to both S and Se vapors....
4855603 Photoluminescent materials for radiography  
Photoluminescent materials for radiography are prepared using a base material, first and second dopants and a fusible salt. The base material is an alkaline earth metal sulfide such as strontium...
4842960 High efficiency photoluminescent material for optical upconversion  
Photoluminescent materials useful for photonic applications are prepared using a dual base material, first, second and third dopants, and a fusable salt. The base materials are alkaline earth metal...
4839243 Radiographic intensifying screen  
A radiographic intensifying screen comprising a support and a fluorescent layer formed thereon, said fluorescent layer consisting essentially of at least one terbium-activated rare earth oxysulfide...
4839092 Photoluminescent materials for outputting orange light  
Photoluminescent materials useful for detection of infrared light are prepared using a base material, first and second dopants, barium sulfate and a fusable salt. The base material is an alkaline...
4830875 Photoluminescent materials and associated process and infrared sensing device  
Photoluminescent materials useful for detection of infrared light are constructed using a base material of strontium sulfide. Barium sulfate is used to increase brightness of output light of the...
4827318 Silicon based light emitting devices  
An efficient solid state light emitting device wherein sulphur is used to provide isoelectronic centers in silicon which bind excitons which emit light at a wavelength of 1.32 microns (um) and are...
4826727 Phosphorescent material for electroluminescent display, comprising silver sulfide in copper sulfide coating on phosphor particles and/or elemental sulfur in dielectric binder for phosphor particles  
Electroluminescent display panels comprising copper sulfide coated Zns:Mn phosphor powder, bonded in an organic dielectric binder, can be provided with increased useful lives by incorporating (1)...
4822520 Photoluminescent materials for outputting blue-green light  
Photoluminescent materials useful for detection of infrared light are prepared using a base material, first and second dopants, barium sulfate and a fusable salt. The base material is an alkaline...
4818434 Thermoluminescent material including fusible salt  
Materials having thermoluminescent properties use a base material and two dopants and made from a process of mixing the parts together, heating the mixture to fuse together, grinding the mass into...
4812659 Infrared sensing device outputting blue-green light  
Photoluminescent materials useful for detection of infrared light are prepared using a base material, first and second dopants, barium sulfate and a fusable salt. The base material is an alkaline...
4812660 Photoluminescent materials for outputting yellow-green light  
Photoluminescent materials useful for detection of infrared light are prepared using a base material, first and second dopants and a fusible salt. The base material is an alkaline earth metal...
4806772 Infrared sensing device outputting orange light and a process for making the same  
Photoluminescent materials useful for detection of infrared light are prepared using a base material, first and second dopants, barium sulfate and a fusable salt. The base material is an alkaline...
4806268 Luminescing glasses  
There are described luminescent glasses having the following compositions (a) 0 to 80 mole % alkali metal oxide (sodium oxide, potassium oxide, lithium oxide), individually or several together,...
4804882 Cathode-ray tube including a white phosphor screen  
A cathode-ray tube according to the present invention is provided with a phosphor screen comprising phosphors A, B, and C, wherein each of the phosphors A and B constitute 5 to 15% by weight and,...
Matches 151 - 200 out of 322 < 1 2 3 4 5 6 7 >