ATE155452T1 - Hochdruckentladungslampe mit keramischer entladungsröhre, dafür geeigneter keramischer körper und verfahren zu seiner herstellung - Google Patents

Hochdruckentladungslampe mit keramischer entladungsröhre, dafür geeigneter keramischer körper und verfahren zu seiner herstellung

Info

Publication number
ATE155452T1
ATE155452T1 AT93119959T AT93119959T ATE155452T1 AT E155452 T1 ATE155452 T1 AT E155452T1 AT 93119959 T AT93119959 T AT 93119959T AT 93119959 T AT93119959 T AT 93119959T AT E155452 T1 ATE155452 T1 AT E155452T1
Authority
AT
Austria
Prior art keywords
ceramic
producing
discharge lamp
body suitable
suitable therefor
Prior art date
Application number
AT93119959T
Other languages
English (en)
Inventor
Rita Tiedt
Helmut Weske
Koichiro Maekawa
Junishi Doi
Original Assignee
Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh
Ngk Insulators Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8213478&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ATE155452(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh, Ngk Insulators Ltd filed Critical Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh
Application granted granted Critical
Publication of ATE155452T1 publication Critical patent/ATE155452T1/de

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
    • C04B35/111—Fine ceramics
    • C04B35/115—Translucent or transparent products
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/302—Vessels; Containers characterised by the material of the vessel
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
    • C04B2235/3225—Yttrium oxide or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
    • C04B2235/3246—Stabilised zirconias, e.g. YSZ or cerium stabilised zirconia
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
    • C04B2235/442—Carbonates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
    • C04B2235/443—Nitrates or nitrites
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
    • C04B2235/449—Organic acids, e.g. EDTA, citrate, acetate, oxalate
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/658—Atmosphere during thermal treatment
    • C04B2235/6581—Total pressure below 1 atmosphere, e.g. vacuum
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/658—Atmosphere during thermal treatment
    • C04B2235/6582—Hydrogen containing atmosphere
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/66—Specific sintering techniques, e.g. centrifugal sintering
    • C04B2235/661—Multi-step sintering

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Discharge Lamp (AREA)
AT93119959T 1993-12-10 1993-12-10 Hochdruckentladungslampe mit keramischer entladungsröhre, dafür geeigneter keramischer körper und verfahren zu seiner herstellung ATE155452T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP93119959A EP0657399B1 (de) 1993-12-10 1993-12-10 Hochdruckentladungslampe mit keramischer Entladungsröhre, dafür geeigneter keramischer Körper und Verfahren zu seiner Herstellung

Publications (1)

Publication Number Publication Date
ATE155452T1 true ATE155452T1 (de) 1997-08-15

Family

ID=8213478

Family Applications (1)

Application Number Title Priority Date Filing Date
AT93119959T ATE155452T1 (de) 1993-12-10 1993-12-10 Hochdruckentladungslampe mit keramischer entladungsröhre, dafür geeigneter keramischer körper und verfahren zu seiner herstellung

Country Status (7)

Country Link
US (1) US5625256A (de)
EP (1) EP0657399B1 (de)
JP (1) JP2780941B2 (de)
CN (1) CN1069442C (de)
AT (1) ATE155452T1 (de)
DE (1) DE69312299T2 (de)
HU (1) HU215321B (de)

Families Citing this family (61)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3507179B2 (ja) * 1995-01-13 2004-03-15 日本碍子株式会社 高圧放電灯
US6083451A (en) * 1995-04-18 2000-07-04 Applied Materials, Inc. Method of producing a polycrystalline alumina ceramic which is resistant to a fluorine-comprising plasma
US5621275A (en) * 1995-08-01 1997-04-15 Osram Sylvania Inc. Arc tube for electrodeless lamp
US5682082A (en) * 1996-07-29 1997-10-28 Osram Sylvania Inc. Translucent polycrystalline alumina and method of making same
DE19943075A1 (de) * 1999-09-03 2001-03-15 Fraunhofer Ges Forschung Poröse Aluminiumoxidstrukturen und Verfahren zu ihrer Herstellung
JP4613408B2 (ja) * 1999-10-15 2011-01-19 日本碍子株式会社 高圧放電灯用発光管の製造方法
US6399528B1 (en) 2000-09-01 2002-06-04 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Porous aluminum oxide structures and processes for their production
US6639362B1 (en) * 2000-11-06 2003-10-28 General Electric Company High pressure discharge lamp
CN1289434C (zh) * 2002-01-04 2006-12-13 皇家飞利浦电子股份有限公司 烧结体和电灯
US7628666B1 (en) 2002-05-21 2009-12-08 Imaging Systems Technology Process for manufacturing plasma-dome PDP
US8198812B1 (en) 2002-05-21 2012-06-12 Imaging Systems Technology Gas filled detector shell with dipole antenna
US7727040B1 (en) 2002-05-21 2010-06-01 Imaging Systems Technology Process for manufacturing plasma-disc PDP
US8513887B1 (en) 2002-05-21 2013-08-20 Imaging Systems Technology, Inc. Plasma-dome article of manufacture
US7405516B1 (en) 2004-04-26 2008-07-29 Imaging Systems Technology Plasma-shell PDP with organic luminescent substance
US7638943B1 (en) 2002-05-21 2009-12-29 Imaging Systems Technology Plasma-disc article of manufacture
US8198811B1 (en) 2002-05-21 2012-06-12 Imaging Systems Technology Plasma-Disc PDP
US7932674B1 (en) 2002-05-21 2011-04-26 Imaging Systems Technology Plasma-dome article of manufacture
AU2003280970A1 (en) * 2002-07-10 2004-02-02 Fraunhofer-Gesellschaft Transparent ploycrystalline aluminium oxide
US7253122B2 (en) * 2002-08-28 2007-08-07 Micron Technology, Inc. Systems and methods for forming metal oxides using metal diketonates and/or ketoimines
US7087481B2 (en) * 2002-08-28 2006-08-08 Micron Technology, Inc. Systems and methods for forming metal oxides using metal compounds containing aminosilane ligands
US6984592B2 (en) * 2002-08-28 2006-01-10 Micron Technology, Inc. Systems and methods for forming metal-doped alumina
US6844285B1 (en) 2003-09-03 2005-01-18 Osram Sylvania Inc. Transparent polycrystalline yttrium aluminum garnet
US7772773B1 (en) 2003-11-13 2010-08-10 Imaging Systems Technology Electrode configurations for plasma-dome PDP
JP4951842B2 (ja) * 2004-02-25 2012-06-13 パナソニック株式会社 高圧ナトリウムランプ
US8129906B1 (en) 2004-04-26 2012-03-06 Imaging Systems Technology, Inc. Lumino-shells
US8339041B1 (en) 2004-04-26 2012-12-25 Imaging Systems Technology, Inc. Plasma-shell gas discharge device with combined organic and inorganic luminescent substances
US8368303B1 (en) 2004-06-21 2013-02-05 Imaging Systems Technology, Inc. Gas discharge device with electrical conductive bonding material
US8113898B1 (en) 2004-06-21 2012-02-14 Imaging Systems Technology, Inc. Gas discharge device with electrical conductive bonding material
US7456122B2 (en) * 2004-10-01 2008-11-25 Ceranova Corporation Polycrystalline alumina articles
US8951608B1 (en) 2004-10-22 2015-02-10 Imaging Systems Technology, Inc. Aqueous manufacturing process and article
US7622866B1 (en) 2005-02-22 2009-11-24 Imaging Systems Technology Plasma-dome PDP
US8299696B1 (en) 2005-02-22 2012-10-30 Imaging Systems Technology Plasma-shell gas discharge device
US7247591B2 (en) * 2005-05-26 2007-07-24 Osram Sylvania Inc. Translucent PCA ceramic, ceramic discharge vessel, and method of making
US7481963B2 (en) * 2005-06-28 2009-01-27 Osram Sylvania Inc. Method of reducing magnesium loss during sintering of aluminum oxide articles
US8618733B1 (en) 2006-01-26 2013-12-31 Imaging Systems Technology, Inc. Electrode configurations for plasma-shell gas discharge device
US7863815B1 (en) 2006-01-26 2011-01-04 Imaging Systems Technology Electrode configurations for plasma-disc PDP
US8410695B1 (en) 2006-02-16 2013-04-02 Imaging Systems Technology Gas discharge device incorporating gas-filled plasma-shell and method of manufacturing thereof
US8035303B1 (en) 2006-02-16 2011-10-11 Imaging Systems Technology Electrode configurations for gas discharge device
US8278824B1 (en) 2006-02-16 2012-10-02 Imaging Systems Technology, Inc. Gas discharge electrode configurations
US7535175B1 (en) 2006-02-16 2009-05-19 Imaging Systems Technology Electrode configurations for plasma-dome PDP
US20080283522A1 (en) * 2007-05-14 2008-11-20 Shuyl Qin Translucent polycrystalline alumina ceramic
US7678725B2 (en) * 2007-05-14 2010-03-16 General Electric Company Translucent polycrystalline alumina ceramic
DE102007032267B4 (de) * 2007-07-11 2018-01-18 Emcon Technologies Germany (Augsburg) Gmbh Abgasanlagen-Rohr mit maßgeschneiderter Wandstärke
US8029595B2 (en) * 2008-06-02 2011-10-04 Nitto Denko Corporation Method and apparatus of producing nanoparticles using nebulized droplet
JP5272658B2 (ja) * 2008-10-31 2013-08-28 東ソー株式会社 高靭性で透光性のアルミナ焼結体及びその製造方法並びに用途
WO2010058745A1 (ja) * 2008-11-18 2010-05-27 東ソー株式会社 高靭性且つ高透光性の着色アルミナ焼結体及びその製造方法並びに用途
US8137587B2 (en) 2009-02-19 2012-03-20 Nitto Denko Corporation Method of manufacturing phosphor translucent ceramics and light emitting devices
US8123981B2 (en) * 2009-02-19 2012-02-28 Nitto Denko Corporation Method of fabricating translucent phosphor ceramics
US9013102B1 (en) 2009-05-23 2015-04-21 Imaging Systems Technology, Inc. Radiation detector with tiled substrates
US8339025B2 (en) * 2009-06-01 2012-12-25 Nitto Denko Corporation Luminescent ceramic and light-emitting device using the same
US8206672B2 (en) * 2009-07-10 2012-06-26 Nitto Denko Corporation Production of phase-pure ceramic garnet particles
EP2305621B1 (de) 2009-09-09 2015-04-22 NGK Insulators, Ltd. Durchscheinender gesinterter Polykristallinkörper, Verfahren zu dessen Herstellung und Lichtbogen für Entladungslampe mit hoher Intensität
WO2012052054A1 (de) 2010-10-19 2012-04-26 Osram Ag Keramische durchführung für eine hochdruckentladungslampe
US20120306365A1 (en) * 2011-06-06 2012-12-06 General Electric Company Polycrystalline transluscent alumina for high intensity discharge lamps
WO2013054219A1 (en) * 2011-10-11 2013-04-18 Koninklijke Philips Electronics N.V. Diffusive ceramic envelope
US8482198B1 (en) 2011-12-19 2013-07-09 General Electric Company High intensity discharge lamp with improved startability and performance
CN102709148B (zh) * 2012-06-06 2014-10-22 宁波泰格尔陶瓷有限公司 具有净化空气的氧化铝陶瓷电弧管及制造方法
JP6035682B2 (ja) * 2013-04-19 2016-11-30 岩崎電気株式会社 セラミックメタルハライドランプ用発光管の製造方法
US9287106B1 (en) 2014-11-10 2016-03-15 Corning Incorporated Translucent alumina filaments and tape cast methods for making
JP6835748B2 (ja) * 2015-06-16 2021-02-24 セラムテック−イーテック ゲゼルシャフト ミット ベシュレンクテル ハフツングＣｅｒａｍＴｅｃ−Ｅｔｅｃ ＧｍｂＨ 耐破壊性光学素子用の構成要素としての透明なセラミック
JP5861853B1 (ja) * 2015-08-25 2016-02-16 岩崎電気株式会社 高圧ナトリウムランプ

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1252851A (de) * 1969-08-27 1971-11-10
US4285732A (en) * 1980-03-11 1981-08-25 General Electric Company Alumina ceramic
DE3174149D1 (en) * 1980-12-20 1986-04-24 Emi Plc Thorn Discharge lamp arc tubes
HU185242B (en) * 1981-02-18 1984-12-28 Egyesuelt Izzolampa Method for producing light-passing alumina sintered bodies advantageously cylinder-symmetrical ones
US4949010A (en) * 1982-02-04 1990-08-14 Tektronix, Inc. X-ray attenuating ceramic materials
US4580075A (en) * 1982-11-26 1986-04-01 General Electric Company High pressure sodium lamp having improved coloring rendition
US4567396A (en) * 1982-11-26 1986-01-28 General Electric Company Increased efficacy high pressure sodium lamp yielded by increased wall temperature operation
CA1207372A (en) * 1982-11-26 1986-07-08 General Electric Company High pressure sodium lamp having improved efficacy
US4762655A (en) * 1985-11-27 1988-08-09 Gte Laboratories Incorporated Method of sintering translucent alumina
US4797238A (en) * 1985-11-27 1989-01-10 Gte Laboratories Incorporated Rapid-sintering of alumina
DE3774594D1 (de) * 1986-03-11 1992-01-02 Philips Nv Verbundkoerper.
US5082809A (en) * 1987-12-21 1992-01-21 Kyocera Corporation High-strength alumina sintered body and process for preparation thereof
DE8907848U1 (de) * 1989-06-27 1989-08-24 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Hochdruckentladungslampe
DE4037721C2 (de) * 1990-11-27 2003-02-13 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Verfahren zur Herstellung einer Natriumhochdrucklampe sowie dafür geeignete Vorrichtung
US5382556A (en) * 1992-04-22 1995-01-17 Sumitomo Chemical Company, Limited Translucent polycrystalline alumina and process for producing the same
US5426343A (en) * 1992-09-16 1995-06-20 Gte Products Corporation Sealing members for alumina arc tubes and method of making the same
US5403794A (en) * 1994-04-14 1995-04-04 Vesuvius Crucible Company Alumina-zirconia refractory material and articles made therefrom

Also Published As

Publication number Publication date
CN1069442C (zh) 2001-08-08
JPH0817396A (ja) 1996-01-19
DE69312299T2 (de) 1998-01-15
EP0657399B1 (de) 1997-07-16
CN1110003A (zh) 1995-10-11
US5625256A (en) 1997-04-29
JP2780941B2 (ja) 1998-07-30
HUT69828A (en) 1995-09-28
HU215321B (hu) 1998-11-30
DE69312299D1 (de) 1997-08-21
EP0657399A1 (de) 1995-06-14

Similar Documents

Publication Publication Date Title
DE69312299D1 (de) Hochdruckentladungslampe mit keramischer Entladungsröhre, dafür geeigneter keramischer Körper und Verfahren zu seiner Herstellung
HUT71073A (en) Ceramic discharge vessel and method of manufacture
DE69209813D1 (de) Absaugrohr zur Verwendung bei chirurgischen Eingriffen
EP0502273A3 (en) Discharge lamp and method of operation
SE9101684D0 (sv) Connecting block for ignition devices
GB2213318B (en) Excitation coil for hid electrodeless discharge lamp
EP0603472A3 (en) Self contained gas powered surgical apparatus.
ATE174779T1 (de) Implantat mit mikrogewinde
EP0822575A3 (de) Durchsichtiges polykristallines Aluminiumoxyd und dessen Herstellunsgverfahren
EP0602529A3 (de) Hochdruckentladungslampe mit einem keramischen Entladungsgefäss.
AU3531189A (en) Excitation supply for gas discharge tubes
EP0769803A3 (de) Elektrodenlose Leuchtstofflampe
EP0438036A3 (en) Method for determining the end of useful life of an inert gas purified and apparatus therefor
HUP9600073A3 (en) Starting aid for into the arc tube and high-pressure discharge lamp with said arc tube
EP0449791A3 (en) A method for determining the end of useful life of a gas purifier and apparatus therefor
GR3020584T3 (en) Geometry enhanced optical output for RF excited fluorescent lights
HU9401480D0 (en) Method for making discharge lamp havin ceramig discharge vessel
AU2381692A (en) Improved tip separator and method of operation for fluorescent tube digester
EP0462120A4 (en) Circuit and method for driving and controlling gas discharge lamps
MX9100749A (es) Procedimiento para la purificacion de un gas de descarga de oxidacion
EP0619144A3 (de) Schlauchanordnordnung für eine gleitdichtungsfreie Zentrifuge.
DE69417188D1 (de) Niederdruck-Quecksilber-Entladungslampe und Verfahren zur Herstellung derselben
HU913681D0 (en) Process and device for manufacturing discharge vessel of high-pressure sodium-vapour discharge lamp
ITMI922432A1 (it) Procedimento per la preparazione di diltiazem
EP0407373A3 (en) Gas discharge tube

Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties