Patents by Inventor Khanh Pham Gia

Khanh Pham Gia 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).

  • Patent number: 8115390
    Abstract: A high-pressure discharge lamp may include a ceramic discharge vessel and a longitudinal axis, with electrodes respectively being led out from the discharge vessel by means of a feed-through via capillaries, wherein a tubular cermet part, which consists of individual layers of different composition layered axially in succession, is fitted on the capillary, each layer containing Mo and Al2O3, the proportion of Mo in the first layer facing toward the capillary being from 3 to 15 vol. % and in the last layer being from 85 to 97 vol. %, and a molybdenum cover cap, the cover cap being welded to the feed-through and the cover cap being connected to the cermet part by means of solder containing metal, and the connection between the capillary and the cermet part being established by means of high-melting glass solder or sinter-active Al2O3 powder.
    Type: Grant
    Filed: August 21, 2008
    Date of Patent: February 14, 2012
    Assignee: OSRAM AG
    Inventors: Roland Huettinger, Stefan Juengst, Stefan Kotter, Khanh Pham Gia, Steffen Walter
  • Publication number: 20110089826
    Abstract: A halogen incandescent lamp may include a bulb, in which a light-emitting element and a fill with a halogen-containing additive is accommodated, the halogen containing F, wherein a fluorine-resistant layer which is passive at suitable temperatures is accommodated in the interior of the bulb and completely covers the inner wall.
    Type: Application
    Filed: October 21, 2010
    Publication date: April 21, 2011
    Applicant: OSRAM GESELLSCHAFT MIT BESCHRAENKTER HAFTUNG
    Inventors: Janbernd Hentschel, Ute Liepold, Khanh Pham Gia, Steffen Walter, Raquel de la Pena Alonso
  • Publication number: 20110006677
    Abstract: An arc tube of ceramic material has an aluminum nitride (AlN) end structure (36) wherein a feedthrough (30) is sealed by direct bonding. Said feedthrough is comprised of a refractory metal, W or Mo, that is aluminized on its outer surface. Preferably, the feedthrough is a Mo pipe that had been provided with a Mo3191Al layer (36) prior to direct bonding, the aluminized layer provides a bonding interface between the AlN ceramic and the refractory metal feedthrough.
    Type: Application
    Filed: September 18, 2008
    Publication date: January 13, 2011
    Applicant: OSRAM GESELLSCHAFT MIT BESCHRAENKTER HAFTUNG
    Inventors: Roland Huettinger, Khanh Pham Gia, Steffen Walter, George C. Wei
  • Patent number: 7863819
    Abstract: The invention relates to a metal halide lamp comprising a ceramic discharge vessel (10), characterized in that an MoV leadthrough is connected to a PCA element (Al2O3) by means of a specific adhesive layer containing Al and Mo.
    Type: Grant
    Filed: November 29, 2006
    Date of Patent: January 4, 2011
    Assignee: OSRAM Gesellschaft Mit Beschraenkter Haftung
    Inventors: Roland Hüttinger, Stefan Jüngst, Khanh Pham Gia, Steffen Walter
  • Patent number: 7858948
    Abstract: A radiation detector is disclosed for X- or gamma rays. In at least one embodiment, the radiation detector includes an array of scintillation detectors and a reflector layer separating these from one another. The reflector layer includes a binder matrix and particles of a light-reflecting material embedded therein, the surfaces of the particles being coated at least partially with a dispersant.
    Type: Grant
    Filed: May 17, 2007
    Date of Patent: December 28, 2010
    Assignee: Siemens Aktiengesellschaft
    Inventors: Wilhelm Metzger, Khanh Pham Gia
  • Publication number: 20100301745
    Abstract: A high-pressure discharge lamp may include a ceramic discharge vessel and a longitudinal axis, with electrodes respectively being led out from the discharge vessel by means of a feed-through via capillaries, wherein a tubular cermet part, which consists of individual layers of different composition layered axially in succession, is fitted on the capillary, each layer containing Mo and Al2O3, the proportion of Mo in the first layer facing toward the capillary being from 3 to 15 vol. % and in the last layer being from 85 to 97 vol. %, and a molybdenum cover cap, the cover cap being welded to the feed-through and the cover cap being connected to the cermet part by means of solder containing metal, and the connection between the capillary and the cermet part being established by means of high-melting glass solder or sinter-active Al2O3 powder.
    Type: Application
    Filed: August 21, 2008
    Publication date: December 2, 2010
    Applicant: OSRAM GESELLSCHAFT MIT BESCHRAENKTER HAFTUNG
    Inventors: Roland Huettinger, Stefan Juengst, Stefan Kotter, Khanh Pham Gia, Steffen Walter
  • Patent number: 7719192
    Abstract: The invention relates to a metal halide lamp comprising a ceramic discharge vessel (21), characterized in that a molybdenum leadthrough (11) is connected to a cermet stopper (15) via an intermetal interface gradient (20).
    Type: Grant
    Filed: November 29, 2006
    Date of Patent: May 18, 2010
    Assignee: OSRAM Gesellschaft mit beschraenkter Haftung
    Inventors: Roland Hüttinger, Stefan Jüngst, Khanh Pham Gia, Steffen Walter
  • Publication number: 20090134796
    Abstract: The invention relates to a metal halide lamp comprising a ceramic discharge vessel (10), characterized in that an MoV leadthrough is connected to a PCA element (Al2O3) by means of a specific adhesive layer containing Al and Mo.
    Type: Application
    Filed: November 29, 2006
    Publication date: May 28, 2009
    Inventors: Roland Huttinger, Stefan Jungst, Khanh Pham Gia, Steffen Walter
  • Publication number: 20090039784
    Abstract: The invention relates to a metal halide lamp comprising a ceramic discharge vessel (21), characterized in that a molybdenum leadthrough (11) is connected to a cermet stopper (15) via an intermetal interface gradient (20).
    Type: Application
    Filed: November 29, 2006
    Publication date: February 12, 2009
    Applicant: OSRAM GESELLSCHAFT MIT
    Inventors: Roland Huttinger, Stefan Jungst, Khanh Pham Gia, Steffen Walter
  • Publication number: 20070269009
    Abstract: A radiation detector is disclosed for x- or gamma rays. In at least one embodiment, the radiation detector includes an array of scintillation detectors and a reflector layer separating these from one another. The reflector layer includes a binder matrix and particles of a light-reflecting material embedded therein, the surfaces of the particles being coated at least partially with a dispersant.
    Type: Application
    Filed: May 17, 2007
    Publication date: November 22, 2007
    Inventors: Wilhelm Metzger, Khanh Pham Gia
  • Patent number: 7265357
    Abstract: A scintillator layer is disclosed for a spatially resolving X-ray detector. Apertures provided in a plate and in the form of a grid, are filled with a filling compound formed from a polymer and a phosphor powder.
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: September 4, 2007
    Assignee: Siemens Aktiengesellschaft
    Inventors: Khanh Pham Gia, Wolfgang Rossner
  • Publication number: 20070072762
    Abstract: A method of manufacturing a ceramic discharge vessel for a lamp application is described. The method uses a low viscosity suspension of ceramic powder in a liquid resin. The discharge vessel is formed layer by layer using a stereolithography system. Preferably, the layers are formed by locally exposing the ceramic-resin mixture to a UV light source that solidifies and cures the resin only in the areas which correspond to the particular cross-sectional profile of the discharge vessel for a respective layer.
    Type: Application
    Filed: January 4, 2006
    Publication date: March 29, 2007
    Applicant: OSRAM SYLVANIA INC.
    Inventors: Jeffrey Neil, Khanh Pham-Gia, Berit Wessler, Martin Schaefer, Martina Schwarz