Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8137589 | Non stoichiometric tetragonal copper alkaline earth silicate phosphors and method of preparing the same Disclosed are non stoichiometric Copper Alkaline Earth Silicate phosphors activated by divalent europium for using them as high temperature stable luminescent materials for ultraviolet or daylight excitation. The phosphors are represented as the formula (Bau | 03/20/2012 |
| 8114313 | Phosphor, process for producing the same, and luminescent device A blue phosphor, which has excellent durability and high brightness, and in particular a blue phosphor in a powder state, which can realize high-brightness luminescence upon exposure to an electron beam, are provided. The phosphor being characterized by comprising a... | 02/14/2012 |
| 8114312 | Display device and green phosphor A display device comprising at least one phosphor layer, the phosphor layer containing a green phosphor represented by the following formula: (A1-xBx) (Zn1-yMny) Al10O17 wherein, A is an element selec... | 02/14/2012 |
| 7985352 | Phosphor for plasma display panel and plasma display panel using the same Provided are a phosphor used in a PDP, which is a compound represented by Formula 1 below and a PDP including a phosphor layer comprising the phosphor. (Y1-x-yGdxTby)AlrQ3-r(BO3)4 | 07/26/2011 |
| 7976727 | Chromium-doped zinc-nitro-antimony-gallium-tellurium infrared phosphors This patent covers infrared phosphorescent materials which exhibit extended persistence lifetimes and are composed of mixtures of the elements zinc, antimony, gallium, tellurium, oxygen and nitrogen, and are doped with varying amounts of chromium, neodymium, dyspros... | 07/12/2011 |
| 7846354 | Method of making red-emitting borate phosphor There is described a method of producing a red-emitting manganese and cerium co-activated gadolinium magnesium zinc pentaborate phosphor that comprises combining a hydrated hexaborate of zinc, magnesium, and manganese with oxides of Gd and Ce to form a mixture, and ... | 12/07/2010 |
| 7404913 | Codoped direct-gap semiconductor scintillators Fast, bright inorganic scintillators at room temperature are based on radiative electron-hole recombination in direct-gap semiconductors, e.g. CdS and ZnO. The direct-gap semiconductor is codoped with two different impurity atoms to convert the semiconductor to a fa... | 07/29/2008 |
| 7048872 | Codoped direct-gap semiconductor scintillators Fast, bright inorganic scintillators at room temperature are based on radiative electron-hole recombination in direct-gap semiconductors, e.g. CdS and ZnO. The direct-gap semiconductor is codoped with two different impurity atoms to convert the semiconductor to a fa... | 05/23/2006 |
| 6838020 | Isotopically enriched luminescent materials and methods of making same The invention is directed to luminescent materials containing isotopically-enriched atomic elements and methods of making these luminescent materials. Individual embodiments of the invention include isotopically-enriched ZnO:Zn, ZnS:Cu:Cl, Zn2SiO4 | 01/04/2005 |
| 6702959 | Long life, white light emitting electroluminescent phosphor A long-life, white-emitting phosphor blend is provided which comprises about 75 wt. % of a first electroluminescent phosphor having an x color coordinate of about 0.530 and a y color coordinate of about 0.455; about 10 wt. % of a second electroluminescent... | 03/09/2004 |
| 6695981 | Method for manufacturing luminescent material, luminescent material manufactured by the same manufacturing method, and display substrate and display apparatus having the same luminescent material The present invention provides a method for manufacturing a luminescent material whereby the surfaces of phosphor particles are uniformly coated with glass, and a luminescent material made up of such particles is easily obtainable, a luminescent material ... | 02/24/2004 |
| 6695980 | Compressed fluid formulation containing electroluminescent material An imaging composition comprises a mixture of a fluid and a functional material; wherein the fluid is compressed and the functional material is an electroluminescent material which is dissolved, dispersed and/or solubilized in the compressed fluid; and wh... | 02/24/2004 |
| 6696782 | Green-emitting phosphor and image display device using the same Green-emitting phosphor having a composition formula represented by (Y1-x-a Gdx Ma)3-3y Tb3y (Al1-z Gaz)5 O12, where 0 | 02/24/2004 |
| 6692660 | High luminescence phosphor particles and related particle compositions Methods for producing metal/metalloid oxide particles comprise rare earth metals herein include reacting a reactant stream in a gas flow. The reactant stream includes a rare earth metal precursor and an oxygen source. A collection of particles comprising ... | 02/17/2004 |
| 6683405 | Fluorescent CWX lamp with reduced mercury An electric lamp has an envelope with an inner surface and two electrodes located at each end of the envelope. The electrodes transfer electric power to generate ultraviolet radiation in the envelope which is filled with mercury and a charge sustaining ga... | 01/27/2004 |
| 6666991 | Fluorescent or phosphorescent composition A fluorescent or luminous composition, comprising a multilayered film-coated powder having at least two coating films on a base particle, and a fluorescent or luminous substance; the composition, wherein at least one layer of the coating films contains th... | 12/23/2003 |
| 6660185 | Photoluminescent phosphor powders, methods for making phosphor powders and devices incorporating same Photoluminescent phosphor powders and a method for making phosphor powders. The phosphor powders have a small particle size, narrow particle size distribution and are substantially spherical. The method of the invention advantageously permits the economic... | 12/09/2003 |
| 6627115 | Electroluminescent phosphor powders, methods for making phosphor powders and devices incorporating same Electroluminescent phosphor powders and a method for making phosphor powders. The phosphor powders have a small particle size, narrow particle size distribution and are substantially spherical. The method of the invention advantageously permits the econom... | 09/30/2003 |
| 6627113 | Phosphor consisting of hollow particles, phosphor slurry, phosphor beads for analysis using tracer technique and their production processes A phosphor consisting of hollow particles, each hollow particle having an outer shell and a space in the inside of said outer shell.... | 09/30/2003 |
| 6576155 | Fluorescent ink compositions comprising functionalized fluorescent nanocrystals A fluorescent ink composition comprising functionalized fluorescent nanocrystals, an aqueous-based ink carrier comprising water or a water-based solution, and a binder. Also provided are methods of providing an image or a security mark on a substrate for ... | 06/10/2003 |
| 6572784 | Luminescent pigments and foils with color-shifting properties Interference pigment flakes and foils are provided which have luminescent and color-shifting properties. The pigment flakes can have a symmetrical coating structure on opposing sides of a core layer, can have an asymmetrical coating structure with all of ... | 06/03/2003 |
| 6572786 | Phosphor and fluorescent display device A phosphor capable of preventing a deterioration in luminous characteristics thereof, particularly, high-temperature operation characteristics thereof due to a SiO2 -containing pigment added thereto. The phosphor has a pigment contained therein... | 06/03/2003 |
| 6565770 | Color-shifting pigments and foils with luminescent coatings Interference pigment flakes and foils are provided which have luminescent and color-shifting properties. A luminescent material coating structure is provided which partially covers or encapsulates a color-shifting pigment flake, or covers the outer surfac... | 05/20/2003 |
| 6562260 | Recovery of electroluminescsent phosphor from encapsulated material A method of recovering a base phosphor from encapsulated phosphors, which comprises the steps of selecting a recovery vessel including a magnetic stir bar; adding to the recovery vessel, deionized water, a first batch of concentrated hydrochloric acid and... | 05/13/2003 |
| 6558574 | Red phosphor having effective emission at low voltages and method for preparing the same using conductive luminescent material A red phosphor having effective emission at low voltages, prepared using a conductive luminescent material, and a method for preparing the same, which is applicable in low-voltage driving image display displays such as field emission displays (FEDs) with ... | 05/06/2003 |
| 6540941 | Green phosphor for fluorescent display and method of manufacturing the same The present invention provides a green phosphor for fluorescent display having a composition represented by a chemical formula: xZnO+(2-x-y/2)Ga2 O3 +yAl2 O3 :zMn2+ where 0.8ࣘx | 04/01/2003 |
| 6531420 | Transparent lithium zinc magnesium orthosilicate glass-ceramics A glass-ceramic which is substantially and desirably totally transparent, and which contains a predominant, orthosilicate crystal phase whose composition lies within the ternary Mg2 SiO4 --Zn2 SiO4 --Li4 | 03/11/2003 |
| 6517741 | Color display screen with color pigment A color display screen comprises a red phosphor and a color pigment having a general formula selected from the group consisting of: A1-x A'x BO2-x N1+x, where 0 | 02/11/2003 |
| 6458512 | Oxynitride encapsulated electroluminescent phosphor particles Encapsulated electroluminescent phosphor particles and a method of making same. Each electroluminescent phosphor particle is encapsulated by a substantially transparent metal oxynitride coating. The coating provides the phosphor particle with reduced sens... | 10/01/2002 |
| 6444143 | Water-soluble fluorescent nanocrystals A water soluble semiconductor nanocrystal capable of light emission is provided, including a quantum dot having a selected band gap energy, a layer overcoating the quantum dot, the overcoating layer comprised of a material having a band gap energy greater... | 09/03/2002 |
| 6417611 | Phosphor composition comprising an amide group-containing or urethane group-containing organic binder A display screen, in particular a color display screen for a cathode ray tube, comprises a phosphor layer which includes a phosphor composition of a phosphor with a coating comprising a water-soluble organic binder, which is selected from the group formed... | 07/09/2002 |
| 6416688 | High luminance blue color fluorescent substance for low-voltage and manufacturing method of the same Disclosed is a low-voltage blue color fluorescent substance which is doped with 0.5 to 3 weight % of P, and a manufacturing method of the same. The above blue color fluorescent substance is manufactured by mixing phosphoric compound as flux with a mixture... | 07/09/2002 |
| 6402985 | Method for preparing efficient low voltage phosphors and products produced thereby Doped phosphors (e.g., metal orthosilicates) are made by adding solid particulate precursor to a solution of an alkoxide precursor and a dopant precursor before hydrolysis is allowed to occur. The mixture is then allowed to hydrolyze, resulting in a sol-g... | 06/11/2002 |
| 6395196 | Process for producing electroluminescent phosphor with extended half-life An electroluminescent phosphor with an extended half-life is created by means of the present invention by taking an amount of a phosphor and treating it with antimony comprising the steps of placing an amount of antimony in an inert reaction vessel, placi... | 05/28/2002 |
| 6380669 | Signaling lamp with phosphor excitation in the VUV range and having specified phosphor mixtures The invention relates to a signaling lamp with VUV phosphor excitation, in particular for traffic applications. It further relates to the use of phosphor mixtures for red, green and yellow signaling lamps and to a correspondingly constructed traffic light... | 04/30/2002 |
| 6379583 | Nanoparticle phosphors manufactured using the bicontinuous cubic phase process Nanocrystalline phosphors are formed within a bicontinuous cubic phase.... | 04/30/2002 |
| 6372155 | Oxide glass showing long afterglow and accelerated phosphorescence The object of the present invention is to provide an oxide glass capable of exhibiting a long lasting afterglow and photostimulated phosphorescence, whereby energy can be accumulated by radiation excitation, for example, by γ-rays, X-rays, UV-rays, etc. ... | 04/16/2002 |
| 6344425 | Fluorotellurite, amplifier glasses A family of fluorotellurite glasses, the composition of which consist essentially of, as calculated in mole percent, 30-75% TeO2, 15-60% ZnF2 and 0.005-10% of an oxide of erbium, thulium or holmium, and amplifying optical components ... | 02/05/2002 |
| 6322725 | Low-voltage excited blue phosphor and method of preparing the same A low-voltage excited blue phosphor is provided. The phosphor comprises a matrix represented by general formula ZnO.Ga2 O3, and Bi doped in the matrix. To prepare the phosphor, ZnO, Ga2 O3, Bi compound, and a fl... | 11/27/2001 |
| 6319426 | Water-soluble fluorescent semiconductor nanocrystals A water-soluble semiconductor nanocrystal capable of light emission is provided. The nanocrystal including a semiconductor nanocrystal core having a selected band gap energy, a shell layer overcoating the core comprised of a semiconductor material having ... | 11/20/2001 |
