CH311304A - Process for purifying germanium. - Google Patents

Process for purifying germanium.

Info

Publication number: CH311304A
Authority: CH; Switzerland
Prior art keywords: purifying germanium; germanium; purifying
Prior art date: 1951-09-13

Application number

Other languages

German (de)

Inventor

Gloeilampenfabrieken N Philips

Original Assignee

Philips 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.)

1951-09-13

Filing date

1952-09-11

Publication date

1955-11-30

1952-09-11 Application filed by Philips Nv filed Critical Philips Nv

1955-11-30 Publication of CH311304A publication Critical patent/CH311304A/en

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)

CH311304D 1951-09-13 1952-09-11 Process for purifying germanium. CH311304A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number	Publication Date
CH311304A true CH311304A (en)	1955-11-30

Family

ID=19750532

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CH311304D CH311304A (en)	1951-09-13	1952-09-11	Process for purifying germanium.

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)	NL83988C (en)

0
- BE BE514120D patent/BE514120A/xx unknown
- NL NL7606796.A patent/NL163975B/en unknown
- NL NL83988D patent/NL83988C/xx active
1952
- 1952-09-09 FR FR1062839D patent/FR1062839A/en not_active Expired
- 1952-09-10 GB GB2272752A patent/GB703606A/en not_active Expired
- 1952-09-10 ES ES0205320A patent/ES205320A1/en not_active Expired
- 1952-09-11 CH CH311304D patent/CH311304A/en unknown
- 1952-09-11 FR FR1062889D patent/FR1062889A/en not_active Expired
- 1952-09-12 DE DEN6063A patent/DE976458C/en not_active Expired

Also Published As

Publication number	Publication date
ES205320A1 (en)	1952-11-01
GB703606A (en)	1954-02-03
NL83988C (en)
FR1062889A (en)	1954-04-28
NL163975B (en)
FR1062839A (en)	1954-04-27
BE514120A (en)
DE976458C (en)	1963-09-12

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