Patents Assigned to Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
  • Patent number: 7285252
    Abstract: An apparatus for producing oxidic nanocrystals from metal organic compounds or volatile inorganic compounds comprises an apparatus which includes a first vaporizer which is connected to a first carrier gas stream to produce a first reactant gas stream, a second vaporizer is connected to a second carrier gas stream to produce a second reactant gas stream the first and second reactant gas streams are connected to a first feed line and flow heated reactor wherein the reactants are heated and reacted to provide oxidic nanocrystals which are unagglomerated having a mean particle size of up to 20 nanometers.
    Type: Grant
    Filed: September 4, 2003
    Date of Patent: October 23, 2007
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Armin Konrad, Torsten Fries, Alfred Gahn, Franz Kummer
  • Patent number: 7278757
    Abstract: An illumination system for backlighting liquid crystal displays has a flat lamp, which has a front side provided for emitting the light and a rear side opposite the front side, a flat housing having a planar rear wall and four side walls, the flat lamp being arranged within the housing on the rear wall, and a frame that at least partially surrounds the side walls of the housing and extends at least up to the edge of the flat lamp.
    Type: Grant
    Filed: May 12, 2005
    Date of Patent: October 9, 2007
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Lothar Hitzschke, Frank Vollkommer
  • Patent number: 7279839
    Abstract: A short arc high-pressure discharge lamp (1) for dc operation, includes a discharge vessel (2) that has two necks (4) diametrically opposite each other, in which an anode (26) and a cathode (7) made of tungsten are melted in a gastight manner, and which has a filling made of at least one noble gas and possibly mercury. According to the invention, at least the material of the cathode tip (11) contains lanthanum oxide La2O3 and at least another oxide from the group consisting of hafnium oxide HfO2 and zirconium oxide ZrO2 in addition to the abovementioned tungsten.
    Type: Grant
    Filed: March 5, 2003
    Date of Patent: October 9, 2007
    Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
    Inventors: Lars Menzel, Dietmar Ehrlichmann, Thomas Mehr, Stephen Berndanner, Wolfgang Spielmann, Gerhard Leichtfried
  • Patent number: 7271547
    Abstract: The invention relates to a high-pressure discharge lamp having electrodes arranged inside a discharge vessel which define a discharge path of a gas discharge in the discharge vessel, and having a starting device, arranged inside the lamp base for the high-pressure discharge lamp and designed as a pulse starting device, for starting the gas discharge in the discharge vessel, and having, arranged outside its discharge vessel, an auxiliary starting electrode coupled to the pulse starting device, the voltage input of pulse starting device being connected in parallel with the discharge path of the high-pressure discharge lamp, such that according to the invention the voltage across the discharge path serves as supply voltage for the pulse starting device. Also disclosed is an operating method for such a high-pressure discharge lamp.
    Type: Grant
    Filed: November 14, 2005
    Date of Patent: September 18, 2007
    Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
    Inventors: Günther Hirschmann, Bernhard Siessegger
  • Patent number: 7270793
    Abstract: A process for producing a phosphate of the lanthanoids is described. The process is based on a two-jet precipitation, starting from separate reservoirs of a rare earth salt solution and a phosphate solution which are introduced simultaneously by separate feedlines into an aqueous acidified initial charge with stirring at a pH of 0?pH?1. After the solutions are added, the pH is raised to a pH of >2 to complete the phosphate precipitation.
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: September 18, 2007
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Ulrich Muller, Dieter Schmidt, Martin Zachau, Franz Zwaschka
  • Patent number: 7267786
    Abstract: A phosphor with a garnet structure is distinguished by the addition of Si. It is suitable in particular for photon excitation by light sources with an emission between 250 and 550 nm.
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: September 11, 2007
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Tim Fiedler, Torsten Fries, Frank Jermann, Martin Zachau, Franz Zwaschka
  • Patent number: 7239082
    Abstract: The invention relates to a luminescence conversion led based illumination deice that emits primarily radiation in the range of from 370 and 430 nm of the optical spectrum (peak wavelength). Said radiation is converted to radiation having a longer wavelength using three luminescent substances that emit in the red, green and blue range.
    Type: Grant
    Filed: October 27, 2005
    Date of Patent: July 3, 2007
    Assignees: Patent-Treuhand-Gesellschaft für Elektrische Glühlampen mbH, Osram Opto Semiconductors GmbH
    Inventors: Dieter Bokor, Andries Ellens, Günter Huber, Frank Jermann, Manfred Kobusch, Michael Ostertag, Wolfgang Rossner, Franz Zwaschka
  • Patent number: 7199513
    Abstract: A discharge lamp (1) having a discharge vessel (2) that surrounds a discharge medium that emits electromagnetic radiation in the VUV region during operation of the lamp, has on the inner side of the discharge vessel wall a yellow phosphor layer facing the discharge medium, and a blue phosphor layer lying therebelow. By contrast with a conventional three-band phosphor mixture, a higher luminous flux and a smaller color locus displacement are thereby achieved.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: April 3, 2007
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Günter Huber, Frank Jermann, Ulrich Müller, Martin Zachau
  • Patent number: 7196479
    Abstract: The invention relates to an electronic ballast for lamps having a converter, in which a switching transistor is protected against transient disturbances by a detection circuit C1, C2, R1, R2, D1–3, T1. In this case, the time derivative of the voltage is taken into consideration.
    Type: Grant
    Filed: October 14, 2004
    Date of Patent: March 27, 2007
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventor: Arwed Storm
  • Patent number: 7193355
    Abstract: An aluminum oxide particle mixture for reflection layers in discharge lamps, and to discharge lamps of this type. The mixture has a first coarse-grained component and a second fine-grained component, with a primary grain size of preferably d50(1) between 0.3 ?m and 0.5 ?m and d50(2) of at most 0.05 ?m, respectively (with an agglomerated size of the fine particles of less than 0.15 ?m).
    Type: Grant
    Filed: September 22, 2004
    Date of Patent: March 20, 2007
    Assignee: Patent-Treuhand-Gesellschaft fuer elektrische Gluehlampen mbH
    Inventors: Sylvain Mayer, Ulrich Müller, Martin Zachau
  • Patent number: 7190117
    Abstract: The incandescent lamp is equipped with a luminous element which is hermetically inserted in a bulb together with a filling, the luminous element having a metal carbide whose melting point is above that of tungsten. The supply lead is fabricated integrally with the luminous element from a wire and provided with an electrically conducting coating which decisively improves the impact strength and make-proofness.
    Type: Grant
    Filed: March 17, 2005
    Date of Patent: March 13, 2007
    Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
    Inventor: Georg Rosenbauer
  • Patent number: 7173384
    Abstract: A description is given of an illumination device which emits mixed-color light containing light of at least two different color channels (R, R1, G, G1, B, B1). The illumination device contains at least one primary light source (1) of a first color, the light of which forms a first color channel (R, R1, G, G1, B, B1), and at least one primary light source (1) of a second color, the light of which forms a second color channel (R, R1, G, G1, B, B1), at least one sensor device (3), which is positioned such that it can receive mixed-color light and is suitable for detecting brightness of light of a wavelength range comprising the color channels (R, R1, G, G1, B, B1) and which determines the brightnesses of the different color channels (R, R1, G, G1, B, B1) separately and repeatedly during operation.
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: February 6, 2007
    Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
    Inventors: Ludwig Plötz, Alois Biebl, Andre Philipp
  • Patent number: 7157867
    Abstract: The operating method is based on the simultaneous use of FM and AM and is distinguished by passing through a number of steps which are used to find an optimum frequency for the AM and, in addition, to define an optimum AM level. An electronic ballast which has a memory module which can be overwritten is used for implementation.
    Type: Grant
    Filed: January 25, 2005
    Date of Patent: January 2, 2007
    Assignee: Patent-Treuhand-Gesellschaft für Elektrische Glühlampen mbH
    Inventor: Klaus Stockwald
  • Patent number: 7144290
    Abstract: The invention relates to a new design of discharge vessel for a discharge lamp, in which dielectrically impeded discharges are to be generated. In this case, a discharge vessel plate 1, 9 is, as it were, of two-fold design, specifically as a first discharge vessel plate 1 with an external electrode set and, in addition, as a stabilizing plate 9 outside the first discharge vessel plate 1.
    Type: Grant
    Filed: May 19, 2005
    Date of Patent: December 5, 2006
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Lothar Hitzschke, Frank Vollkommer
  • Patent number: 7145292
    Abstract: The present invention relates to novel discharge structures for dielectric barrier discharge lamps, in which discharge electrode sections, which are associated with the individual discharges, of the respective electrode strips overhang adjacent sections of the electrode strips.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: December 5, 2006
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Lothar Hitzschke, Frank Vollkommer
  • Patent number: 7144288
    Abstract: A process for producing a discharge lamp which is designed for dielectric barrier discharges in which, during a filling step, before the discharge chamber is closed, a part of the discharge vessel is held in a raised position by a support element which is then at least partially softened, in order for the part which is being held in a raised position to be lowered. The support element lies outside the discharge chamber.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: December 5, 2006
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Lothar Hitzschke, Frank Vollkommer
  • Patent number: 7126265
    Abstract: The LED has phosphor particles (2) with a mean phosphor particle size d50 selected from the range of from 0.1 ?m, inclusive, to 1.5 ?m, inclusive, in particular the phosphor particles having primary particles (4) with a mean particle size (5) selected from the range of from 0.1 ?m, inclusive, to 1.0 ?m, inclusive. The primary particles, which comprise, for example, an yttrium aluminum garnet (Y3Al5O12) doped with cerium, are agglomerated to form the phosphor particles.
    Type: Grant
    Filed: May 24, 2004
    Date of Patent: October 24, 2006
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Frank Jermann, Martin Zachau
  • Patent number: 7115217
    Abstract: A phosphor for light sources, the emission from which lies in the short-wave optical spectral region, as a garnet structure A3B5O12. It is activated with Ce, the second component B representing at least one of the elements Al and Ga, and the first component A is terbium or terbium together with at least one of the elements Y, Gd, La and/or Lu. In a preferred embodiment, a phosphor having a garnet of structure (Tb1?x?yRExCEy)3(Al,Ga)5O12, where RE=Y, Gd, La and/or Lu; 0?x?0.5?y; 0<y<0.1 is used.
    Type: Grant
    Filed: October 16, 2003
    Date of Patent: October 3, 2006
    Assignees: Patent - Treuhand - Gesellschaft fuer Elektrische Gluehlampen mbH, OSRAM Opto Semiconductors GmbH & Co OHG
    Inventors: Franz Kummer, Franz Zwaschka, Andries Ellens, Alexandra Debray, Guenther Waitl
  • Patent number: 7106003
    Abstract: A dielectric barrier discharge lamp with a discharge vessel (1) has at least one inner electrode (5a; 5b) which is covered with a dielectric layer (6a; 6b) and is arranged on the inner side of the discharge vessel (1) The at least one inner electrode (5a; 5b) is electrically conductively connected to a supply conductor (8a; 8b) in a leadthrough region, the leadthrough region being realized by a gastight pinch (9).
    Type: Grant
    Filed: March 15, 2004
    Date of Patent: September 12, 2006
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventor: Georg Bschorer
  • Patent number: 7083476
    Abstract: A base for a headlight lamp, which has a plastic base part having at least two electrical connections, which have a first end with a contact face, the first ends protruding from the base part when mounted such that the contact faces are perpendicular to the longitudinal extent of the headlight lamp, and a second end to be connected to a power supply wire and extends parallel to the longitudinal extent of the headlight lamp. For each electrical connection, the first and second ends are connected to one another by a central section, and these central sections are embedded in the plastic of the base part and the second ends are bent back from the respective central section.
    Type: Grant
    Filed: February 14, 2005
    Date of Patent: August 1, 2006
    Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
    Inventors: Peter Helbig, Uwe Kantim