DE1034163C2 - - Google Patents

Info

Publication number
DE1034163C2
DE1034163C2 DE1956D0024600 DED0024600A DE1034163C2 DE 1034163 C2 DE1034163 C2 DE 1034163C2 DE 1956D0024600 DE1956D0024600 DE 1956D0024600 DE D0024600 A DED0024600 A DE D0024600A DE 1034163 C2 DE1034163 C2 DE 1034163C2
Authority
DE
Germany
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
DE1956D0024600
Other languages
German (de)
Other versions
DE1034163B (de
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 filed Critical
Priority to DED24600A priority Critical patent/DE1034163B/de
Priority to CH5178957A priority patent/CH372648A/de
Priority to NL222078A priority patent/NL222078A/xx
Priority to US701708A priority patent/US2950955A/en
Priority to GB40290/57A priority patent/GB836275A/en
Publication of DE1034163B publication Critical patent/DE1034163B/de
Application granted granted Critical
Publication of DE1034163C2 publication Critical patent/DE1034163C2/de
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
    • G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
    • G11B5/70642—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides
    • G11B5/70652—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides gamma - Fe2 O3
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/02—Oxides; Hydroxides
    • C01G49/06—Ferric oxide [Fe2O3]
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
    • G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
    • G11B5/70642—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides
    • G11B5/70647—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides with a skin

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Dermatology (AREA)
  • General Health & Medical Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Iron (AREA)
  • Silicon Compounds (AREA)
DED24600A 1956-12-31 1956-12-31 Verfahren zur Herstellung von feinverteiltem, ferromagnetischem Eisenoxyd Granted DE1034163B (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DED24600A DE1034163B (de) 1956-12-31 1956-12-31 Verfahren zur Herstellung von feinverteiltem, ferromagnetischem Eisenoxyd
CH5178957A CH372648A (de) 1956-12-31 1957-10-21 Verfahren zur Herstellung von feinverteiltem ferromagnetischem Eisenoxyd
NL222078A NL222078A (ja) 1956-12-31 1957-11-01
US701708A US2950955A (en) 1956-12-31 1957-12-10 Process for the preparation of finely divided ferromagnetic ferric oxide
GB40290/57A GB836275A (en) 1956-12-31 1957-12-30 Process for the production of finely divided ferromagnetic iron oxide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED24600A DE1034163B (de) 1956-12-31 1956-12-31 Verfahren zur Herstellung von feinverteiltem, ferromagnetischem Eisenoxyd

Publications (2)

Publication Number Publication Date
DE1034163B DE1034163B (de) 1958-07-17
DE1034163C2 true DE1034163C2 (ja) 1958-12-24

Family

ID=7038241

Family Applications (1)

Application Number Title Priority Date Filing Date
DED24600A Granted DE1034163B (de) 1956-12-31 1956-12-31 Verfahren zur Herstellung von feinverteiltem, ferromagnetischem Eisenoxyd

Country Status (5)

Country Link
US (1) US2950955A (ja)
CH (1) CH372648A (ja)
DE (1) DE1034163B (ja)
GB (1) GB836275A (ja)
NL (1) NL222078A (ja)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4777031A (en) * 1986-07-14 1988-10-11 Cadot Corporation High temperature process for making fine magnetic particles
US4765920A (en) * 1986-07-14 1988-08-23 Cabot Corporation High temperature process for producing fine magnetic particles of M-phase structure
CA1327342C (en) * 1987-11-30 1994-03-01 James Kelly Kindig Process for beneficiating particulate solids
US5794791A (en) * 1987-11-30 1998-08-18 Genesis Research Corporation Coal cleaning process
WO1993007967A1 (en) * 1991-10-15 1993-04-29 Genesis Research Corporation Coal cleaning process

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1816388A (en) * 1924-05-23 1931-07-28 Ig Farbenindustrie Ag Method of producing finely divided metal oxides
US1850286A (en) * 1925-05-20 1932-03-22 Ig Farbenindustrie Ag Process for making finely divided metal oxides
US1992685A (en) * 1928-06-22 1935-02-26 Sulphur And Smelting Corp Production of ferric oxide by burning ferric chloride
GB677878A (en) * 1949-12-29 1952-08-20 Basf Ag Improvements in the production of magnetic iron oxides
BE511837A (ja) * 1951-06-04
GB726250A (en) * 1952-04-02 1955-03-16 Degussa Process for the production of finely divided oxides

Also Published As

Publication number Publication date
GB836275A (en) 1960-06-01
US2950955A (en) 1960-08-30
CH372648A (de) 1963-10-31
NL222078A (ja) 1963-03-15
DE1034163B (de) 1958-07-17

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