FR581209A - Perfectionnements au travail du quartz - Google Patents

Perfectionnements au travail du quartz

Info

Publication number
FR581209A
FR581209A FR581209DA FR581209A FR 581209 A FR581209 A FR 581209A FR 581209D A FR581209D A FR 581209DA FR 581209 A FR581209 A FR 581209A
Authority
FR
France
Prior art keywords
quartz
work
quartz work
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
English (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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR581209A publication Critical patent/FR581209A/fr
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B20/00—Processes specially adapted for the production of quartz or fused silica articles, not otherwise provided for
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00—Other methods of shaping glass
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Glass Melting And Manufacturing (AREA)
  • Surface Treatment Of Glass (AREA)
FR581209D 1923-04-18 1924-04-16 Perfectionnements au travail du quartz Expired FR581209A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US633018A US1544293A (en) 1923-04-18 1923-04-18 Quartz working

Publications (1)

Publication Number Publication Date
FR581209A true FR581209A (fr) 1924-11-25

Family

ID=24537946

Family Applications (1)

Application Number Title Priority Date Filing Date
FR581209D Expired FR581209A (fr) 1923-04-18 1924-04-16 Perfectionnements au travail du quartz

Country Status (2)

Country Link
US (1) US1544293A (fr)
FR (1) FR581209A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050188724A1 (en) * 2004-03-01 2005-09-01 Hoya Corporation Process for the production of precision press-molding preform and process for the production of optical element

Also Published As

Publication number Publication date
US1544293A (en) 1925-06-30

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