FR581042A - Manufacturing process of tungsten filaments - Google Patents

Manufacturing process of tungsten filaments

Info

Publication number
FR581042A
FR581042A FR581042DA FR581042A FR 581042 A FR581042 A FR 581042A FR 581042D A FR581042D A FR 581042DA FR 581042 A FR581042 A FR 581042A
Authority
FR
France
Prior art keywords
manufacturing process
tungsten filaments
filaments
tungsten
manufacturing
Prior art date
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
Other languages
French (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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR581042A publication Critical patent/FR581042A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
    • H01K3/02—Manufacture of incandescent bodies
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
    • C22C32/001—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides
    • C22C32/0015—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides with only single oxides as main non-metallic constituents
    • C22C32/0031—Matrix based on refractory metals, W, Mo, Nb, Hf, Ta, Zr, Ti, V or alloys thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
FR581042D 1923-05-17 1924-05-02 Manufacturing process of tungsten filaments Expired FR581042A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL216124X 1923-05-17

Publications (1)

Publication Number Publication Date
FR581042A true FR581042A (en) 1924-11-21

Family

ID=19779082

Family Applications (1)

Application Number Title Priority Date Filing Date
FR581042D Expired FR581042A (en) 1923-05-17 1924-05-02 Manufacturing process of tungsten filaments

Country Status (4)

Country Link
US (1) US1662027A (en)
FR (1) FR581042A (en)
GB (1) GB216124A (en)
NL (1) NL15542C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2498769A (en) * 1944-10-21 1950-02-28 Westinghouse Electric Corp Manufacture of alloys
US3475159A (en) * 1967-01-16 1969-10-28 Dow Chemical Co Method for preparing tungsten powders doped with refractory metal oxides

Also Published As

Publication number Publication date
NL15542C (en)
GB216124A (en) 1924-12-18
US1662027A (en) 1928-03-06

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