FR2304589B1 - - Google Patents

Info

Publication number
FR2304589B1
FR2304589B1 FR7607696A FR7607696A FR2304589B1 FR 2304589 B1 FR2304589 B1 FR 2304589B1 FR 7607696 A FR7607696 A FR 7607696A FR 7607696 A FR7607696 A FR 7607696A FR 2304589 B1 FR2304589 B1 FR 2304589B1
Authority
FR
France
Legal status (The legal status 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 status listed.)
Expired
Application number
FR7607696A
Other languages
French (fr)
Other versions
FR2304589A1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NGK Insulators Ltd
Original Assignee
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
Application filed by NGK Insulators Ltd filed Critical NGK Insulators Ltd
Publication of FR2304589A1 publication Critical patent/FR2304589A1/fr
Application granted granted Critical
Publication of FR2304589B1 publication Critical patent/FR2304589B1/fr
Granted legal-status Critical Current

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
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/64—Burning or sintering processes
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Compositions Of Oxide Ceramics (AREA)
FR7607696A 1975-03-18 1976-03-17 Tube en alumine polycristalline transparente et lampe a vapeur metallique a haute pression utilisant un tel tube Granted FR2304589A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50031769A JPS51107683A (en) 1975-03-18 1975-03-18 Taketsushotomeiaruminahatsukokan

Publications (2)

Publication Number Publication Date
FR2304589A1 FR2304589A1 (fr) 1976-10-15
FR2304589B1 true FR2304589B1 ( ) 1979-09-21

Family

ID=12340241

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7607696A Granted FR2304589A1 (fr) 1975-03-18 1976-03-17 Tube en alumine polycristalline transparente et lampe a vapeur metallique a haute pression utilisant un tel tube

Country Status (7)

Country Link
US (1) US4264541A ( )
JP (1) JPS51107683A ( )
DE (1) DE2609974C3 ( )
FR (1) FR2304589A1 ( )
GB (1) GB1475866A ( )
NL (1) NL176772C ( )
SU (1) SU651686A3 ( )

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1597162A (en) * 1977-03-10 1981-09-03 Ngk Insulators Ltd Transparent polycrystalline alumina and high pressure vapour discharge lamp
JPS5477481A (en) * 1977-12-02 1979-06-20 Ngk Insulators Ltd Polycrystal transparent alumina light emitting tube and high voltage vapor discharge lamp using same
JPS6022670B2 (ja) * 1978-05-12 1985-06-03 日本碍子株式会社 多結晶透明アルミナ及びその製造法ならびに高圧蒸気放射灯用発光管
FR2476636A1 (fr) * 1980-02-26 1981-08-28 Euroceral Tube en alumine translucide localement noir et son procede de fabrication
US4736136A (en) * 1986-06-16 1988-04-05 Gte Laboratories Incorporated Discharge lamps with coated ceramic arc tubes and fabrication thereof
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
CN1245735C (zh) * 2000-07-19 2006-03-15 日本碍子株式会社 高辉度放电灯用多结晶陶瓷发光管的制造方法
JP2002184352A (ja) * 2000-07-19 2002-06-28 Ngk Insulators Ltd 高輝度放電灯用多結晶セラミックス発光管及びその製造方法
US6878456B2 (en) 2001-12-28 2005-04-12 3M Innovative Properties Co. Polycrystalline translucent alumina-based ceramic material, uses, and methods
US6648638B2 (en) 2001-12-28 2003-11-18 3M Innovative Properties Company Orthodontic appliances including polycrystalline alumina-based ceramic material, kits, and methods
WO2003075312A1 (fr) * 2002-03-07 2003-09-12 Ngk Insulators,Ltd Boitier electroluminescent pour lampe a decharge haute tension et procede de preparation d'un produit fritte d'alumine transparente polycristalline
US6949145B2 (en) * 2002-04-05 2005-09-27 Boc, Inc. Vapor-assisted cryogenic cleaning
JP2008177151A (ja) * 2006-09-25 2008-07-31 Toshiba Lighting & Technology Corp 高圧放電ランプ、高圧放電ランプ点灯装置および照明装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3026210A (en) * 1961-01-03 1962-03-20 Gen Electric Transparent alumina and method of preparation
US3026177A (en) * 1961-04-25 1962-03-20 Gen Electric Process for producing transparent polycrystalline alumina
GB1252851A ( ) * 1969-08-27 1971-11-10
US3834939A (en) * 1970-02-19 1974-09-10 Ibm Method of forming doped silicon oxide layers on substrates and paint-on compositions useful in such methods
JPS4898684A ( ) * 1972-03-27 1973-12-14
US3834915A (en) * 1972-07-24 1974-09-10 Gte Sylvania Inc Fine grain translucent alumina
US3875277A (en) * 1973-07-30 1975-04-01 Westinghouse Electric Corp Method for making polycrystalline alumina arc tubes

Also Published As

Publication number Publication date
DE2609974A1 (de) 1976-09-23
NL7602507A (nl) 1976-09-21
DE2609974B2 (de) 1978-02-16
NL176772B (nl) 1985-01-02
JPS51107683A (en) 1976-09-24
SU651686A3 (ru) 1979-03-05
NL176772C (nl) 1985-06-03
DE2609974C3 (de) 1978-10-19
FR2304589A1 (fr) 1976-10-15
GB1475866A (en) 1977-06-10
US4264541A (en) 1981-04-28

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Legal Events

Date Code Title Description
ST Notification of lapse