FR1062889A - Germanium purification process - Google Patents

Germanium purification process

Info

Publication number
FR1062889A
FR1062889A FR1062889DA FR1062889A FR 1062889 A FR1062889 A FR 1062889A FR 1062889D A FR1062889D A FR 1062889DA FR 1062889 A FR1062889 A FR 1062889A
Authority
FR
France
Prior art keywords
germanium
purification process
purification
germanium purification
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 FR1062889A publication Critical patent/FR1062889A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B41/00—Obtaining germanium
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/08—Machine parts specially adapted for dentistry
    • A61C1/14—Tool-holders, i.e. operating tool holders, e.g. burr holders
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C3/00—Dental tools or instruments
    • A61C3/06—Tooth grinding or polishing discs; Holders therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Manufacture And Refinement Of Metals (AREA)
FR1062889D 1951-09-13 1952-09-11 Germanium purification process Expired FR1062889A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL163975 1951-09-13

Publications (1)

Publication Number Publication Date
FR1062889A true FR1062889A (en) 1954-04-28

Family

ID=19750532

Family Applications (2)

Application Number Title Priority Date Filing Date
FR1062839D Expired FR1062839A (en) 1951-09-13 1952-09-09 Sophisticated instrument for milling, grinding and polishing intended for dentistry or other precision work
FR1062889D Expired FR1062889A (en) 1951-09-13 1952-09-11 Germanium purification process

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR1062839D Expired FR1062839A (en) 1951-09-13 1952-09-09 Sophisticated instrument for milling, grinding and polishing intended for dentistry or other precision work

Country Status (7)

Country Link
BE (1) BE514120A (en)
CH (1) CH311304A (en)
DE (1) DE976458C (en)
ES (1) ES205320A1 (en)
FR (2) FR1062839A (en)
GB (1) GB703606A (en)
NL (2) NL163975B (en)

Also Published As

Publication number Publication date
BE514120A (en)
FR1062839A (en) 1954-04-27
CH311304A (en) 1955-11-30
NL163975B (en)
ES205320A1 (en) 1952-11-01
DE976458C (en) 1963-09-12
GB703606A (en) 1954-02-03
NL83988C (en)

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