Patents by Inventor Roger B. Hunt, Jr.
Roger B. Hunt, Jr. has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8137586Abstract: A phosphor blend for a compact fluorescent lamp is described wherein the phosphor blend comprises a green-emitting Tb3+ phosphor, a Y2O3:Eu3+ phosphor, a Sr6BP5O20:Eu2+ phosphor, a Mg4GeO5.5F:Mn4+ phosphor, and optionally a BaMgAl11O17:Eu2+ phosphor, wherein the blend contains from 1% to 20% by weight of the Sr6BP5O20:Eu2+ phosphor and from 5% to 30% by weight of the Mg4GeO5.5F:Mn4+ phosphor. A compact fluorescent lamp having a phosphor coating containing the phosphor blend produces a light that is perceived as more pleasing than the light produced by standard compact fluorescent lamps.Type: GrantFiled: November 25, 2008Date of Patent: March 20, 2012Assignee: Osram Sylvania Inc.Inventors: Albert M. Cavallaro, Robert E. Levin, Chung-Nin Chau, Roger B. Hunt, Jr.
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Patent number: 7641517Abstract: A lamp base has a projection that carries lamp contacts and has an outer surface formed with retaining formations arrayed with irregular spacing. A socket forms a recess into which the projection can be inserted with play and apertures provided with contacts engageable with the lamp contacts. Retaining formations in the socket fit with the lamp-base retaining formations in only one defined angular alignment of the lamp base and the socket. The projection has a central plug projecting toward the socket and forming a lamp key coded for a predetermined lamp wattage. The socket has a hole corresponding to the plug and itself forming a socket key coded for the maximally admissible lamp wattage for the socket. The lamp base only fits into the socket when the lamp wattage indicated by the lamp key does not exceed the maximally admissible lamp wattage defined by the socket key.Type: GrantFiled: February 12, 2008Date of Patent: January 5, 2010Assignees: BJB GmbH & Co. KG, Osram Sylvania Inc.Inventors: Karl-Wilhelm Vogt, Tobias Brown, Markus Pieper, Albert M. Cavallaro, Roger B. Hunt, Jr., Dennis S. Holt
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Publication number: 20090203260Abstract: A device for holding a compact fluorescent lamp in a light fixture with a socket 10 and a lamp base is shown and described. The bayonet-type fixing of the lamp base in a socket 10 is effected by means of a plug-and-rotate motion. In order to give manufacturers of light fixtures the possibility of manufacturing light fixtures for lamps with a predetermined or maximally admissible lamp wattage, the invention proposes a key system with seven key pairs. Each key pair comprises a lamp key and a socket key and characterizes a predetermined lamp wattage. Concretely speaking, the socket key is a lug arranged in a hole and the lamp key is a plug corresponding to the socket hole with a outwardly open cutout. In addition, a key system for making predetermined lamp types recognizable is described.Type: ApplicationFiled: February 12, 2008Publication date: August 13, 2009Inventors: Karl-Wilhelm Vogt, Tobias Brown, Markus Pieper, Albert M. Cavallaro, Roger B. Hunt, JR., Dennis S. Holt
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Publication number: 20090134769Abstract: A phosphor blend for a compact fluorescent lamp is described wherein the phosphor blend comprises a green-emitting Tb3+ phosphor, a Y2O3:Eu3+ phosphor, a Sr6BP5O20:Eu2+ phosphor, a Mg4GeO5.5F:Mn4+ phosphor, and optionally a BaMgAl11O17:Eu2+ phosphor, wherein the blend contains from 1% to 20% by weight of the Sr6BP5O20:Eu2+hosphor and from 5% to 30% by weight of the Mg4GeO5.5F:Mn4+phosphor. A compact fluorescent lamp having a phosphor coating containing the phosphor blend produces a light that is perceived as more pleasing than the light produced by standard compact fluorescent lamps.Type: ApplicationFiled: November 25, 2008Publication date: May 28, 2009Applicant: OSRAM SYLVANIA INC.Inventors: Albert M. Cavallaro, Robert E. Levin, Chung-Nin Chau, Roger B. Hunt, JR.
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Patent number: 7402955Abstract: A lamp envelope is provided with an alumina layer and a multilayer phosphor coating on the alumina layer. The phosphor coating includes a top phosphor layer with a first weight percent of rare earth activators and a middle phosphor layer with a second weight percent of rare earth activators. The second weight percent is less than the first weight percent so that a total amount of the activators in the coating is reduced while maintaining a required lamp brightness and color rendering index (CRI). Preferably, the second weight percent is about 50-60% of the first weight percent and the middle layer is about 30-50% of a total weight of the coating so that a total weight of the activators in the coating is no more than about 80% of a weight of the activators in the coating if the first and second weight percents were the same.Type: GrantFiled: May 24, 2005Date of Patent: July 22, 2008Assignee: Osram Sylvania Inc.Inventors: Chung-nin Chau, Paul W. Salvi, Roger B. Hunt, Jr.
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Patent number: 6137217Abstract: A fluorescent lamp comprises at least one layer of a four-component phosphor blend for producing visible illumination having a white color. The quad-phosphor blend comprising a first and second red-emitting phosphor component with each red-emitting phosphor component having different visible emission spectrum principally in the 590 to 630 nm wavelength range. A third blue-emitting phosphor component has an emission spectrum principally in the 430 to 490 nm wavelength range. A fourth no-rare-earth green-emitting phosphor component has an emission spectrum principally in the 500 to 570 nm wavelength range. The relative proportions of the phosphor components are such that an enhanced color rendering index is produced as compared to tri-component blends formed from only three of the phosphor components.Type: GrantFiled: August 28, 1992Date of Patent: October 24, 2000Assignee: GTE Products CorporationInventors: Romano G. Pappalardo, Roger B. Hunt, Jr.
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Patent number: 6007741Abstract: A method is provided whereby high brightness metaborate phosphors are made by milling the reactants in a saturated aqueous solution of magnesia and boric acid prior to firing. The method increases the homogeneity of the fired metaborate phosphor cake and reduces the tendency of the fired cake to stick to the firing boats.Type: GrantFiled: August 19, 1998Date of Patent: December 28, 1999Assignee: Osram Sylvania Inc.Inventors: Roger B. Hunt, Jr., Michael A. Krebs
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Patent number: 4979893Abstract: The lumen maintenance of fluorescent lamps containing yttrium vanadate phosphors is markedly improved by the presence of a protective oxide layer for the phosphor. The protective oxide layer is produced by evaporating aluminum isopropoxide, in a vacuum, over phorphor particles forming a continuous aluminum isopropoxide over the phosphor particles. The isopropoxide coating is subsequently oxidized by lehring the phosphor at a temperature from about 500.degree. C. to 625.degree. C. forming an alumina coating on the phosphor particles.Type: GrantFiled: February 21, 1989Date of Patent: December 25, 1990Assignee: GTE Laboratories IncorporatedInventors: Romano G. Pappalardo, Thomas E. Peters, Roger B. Hunt, Jr.
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Patent number: 4952422Abstract: A fluorescent lamp containing a Y.sub.2 O.sub.3 or Al.sub.2 O.sub.3 coating on a layer of yttrium vanadate phosphor and a method of coating the layer of the yttrium vanadate phosphor with a continuous protective coating of Y.sub.2 O.sub.3 or Al.sub.2 O.sub.3 is described. The method comprises applying a coating of a metal, such as yttrium or aluminum, on the yttrium vanadate phosphor then lehring the metallic coating at about 500.degree. C. to about 625.degree. C. to form a continuous protective coating of Y.sub.2 O.sub.3 or Al.sub.2 O.sub.3 overlaying the layer of phosphor.Type: GrantFiled: February 29, 1988Date of Patent: August 28, 1990Assignee: GTE Laboratories IncorporatedInventors: Romano G. Pappalardo, Thomas E. Peters, Roger B. Hunt, Jr.
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Patent number: 4806389Abstract: A method for preventing the hydration/solubilization of the protective oxide coating of a phosphor is described. The method involves coating of the oxide coated phosphor particles with a continuous hydrophobic coating. After the phosphor particles are coated with the continuous hydrophobic coating and the continuous hydrophobic coating cured, they are added to a water-based suspension and subsequently processed into a lamp.Type: GrantFiled: March 2, 1987Date of Patent: February 21, 1989Assignee: GTE Laboratories IncorporatedInventors: Thomas E. Peters, Roger B. Hunt, Jr.
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Patent number: 4803400Abstract: A method for eliminating carbonaceous contaminants and preventing the hydration/solubilization of the oxide coating of a phosphor is described. The method involves the annealing of the oxide coated phosphor at a temperature and for a period sufficient to preclude adversely affecting the protective oxide coating on the phosphor during subsequent water-based suspension processing without detrimentally altering the phosphor. After annealing the phosphor is cooled and then added to a water-based suspension. The optimum conditions for annealing a manganese activated zinc silicate phosphor or a calcium halophosphate phosphor having a protective aluminum oxide coating are the combination of a temperature between about 700.degree. C. and about 850.degree. C. and for a period of time from about 15 minutes to about 20 hours.Type: GrantFiled: February 2, 1987Date of Patent: February 7, 1989Assignee: GTE Laboratories IncorporatedInventors: Thomas E. Peters, Roger B. Hunt, Jr.