FR2476636B1 - - Google Patents

Info

Publication number
FR2476636B1
FR2476636B1 FR8004205A FR8004205A FR2476636B1 FR 2476636 B1 FR2476636 B1 FR 2476636B1 FR 8004205 A FR8004205 A FR 8004205A FR 8004205 A FR8004205 A FR 8004205A FR 2476636 B1 FR2476636 B1 FR 2476636B1
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
FR8004205A
Other languages
French (fr)
Other versions
FR2476636A1 (en
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.)
EUROCERAL
Original Assignee
EUROCERAL
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 EUROCERAL filed Critical EUROCERAL
Priority to FR8004205A priority Critical patent/FR2476636A1/en
Publication of FR2476636A1 publication Critical patent/FR2476636A1/en
Application granted granted Critical
Publication of FR2476636B1 publication Critical patent/FR2476636B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/36—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
FR8004205A 1980-02-26 1980-02-26 Translucent alumina tube for sodium vapour lamps - with opaque, electrically conducting regions to improve service life Granted FR2476636A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8004205A FR2476636A1 (en) 1980-02-26 1980-02-26 Translucent alumina tube for sodium vapour lamps - with opaque, electrically conducting regions to improve service life

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8004205A FR2476636A1 (en) 1980-02-26 1980-02-26 Translucent alumina tube for sodium vapour lamps - with opaque, electrically conducting regions to improve service life

Publications (2)

Publication Number Publication Date
FR2476636A1 FR2476636A1 (en) 1981-08-28
FR2476636B1 true FR2476636B1 (en) 1984-03-23

Family

ID=9238983

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8004205A Granted FR2476636A1 (en) 1980-02-26 1980-02-26 Translucent alumina tube for sodium vapour lamps - with opaque, electrically conducting regions to improve service life

Country Status (1)

Country Link
FR (1) FR2476636A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4603109A (en) * 1984-06-01 1986-07-29 Norton Company Method and apparatus for contacting reactants in chemical and biological reactions

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1118078B (en) * 1958-02-05 1961-11-23 Degussa Hard material body and process for its production
US3544343A (en) * 1967-02-02 1970-12-01 Corning Glass Works High density alumina and method for producing it
US3459564A (en) * 1967-02-14 1969-08-05 Corning Glass Works High density alumina and method for producing it
DE2059679A1 (en) * 1970-12-04 1972-06-15 Rosenthal Stemag Tech Keramik High quality, densely sintered aluminum oxide ceramic
CA969976A (en) * 1971-06-24 1975-06-24 Newton Levy (Jr.) Cermet materials
JPS4893180A (en) * 1972-03-08 1973-12-03
JPS51107683A (en) * 1975-03-18 1976-09-24 Ngk Insulators Ltd Taketsushotomeiaruminahatsukokan
NZ182774A (en) * 1975-12-09 1979-06-19 Thorn Electrical Ind Ltd Electrically conducting cermet
NL7605917A (en) * 1976-06-02 1977-12-06 Philips Nv Sintered articles of aluminium oxide and iron, cobalt or nickel - have good electrical and thermal conductivity e.g. for semiconductors
DE2834146A1 (en) * 1978-08-03 1980-02-21 Siemens Ag Alumina ceramic for mfg. wear resistant parts, esp. valve seats - where mouldings contain at least one heavy metal oxide such as chromic oxide or titanium di:oxide

Also Published As

Publication number Publication date
FR2476636A1 (en) 1981-08-28

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse