FR2168562A1 - - Google Patents
Info
- Publication number
- FR2168562A1 FR2168562A1 FR7301966A FR7301966A FR2168562A1 FR 2168562 A1 FR2168562 A1 FR 2168562A1 FR 7301966 A FR7301966 A FR 7301966A FR 7301966 A FR7301966 A FR 7301966A FR 2168562 A1 FR2168562 A1 FR 2168562A1
- Authority
- FR
- France
- 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.)
- Granted
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
- G11B5/70663—Preparation processes specially adapted therefor, e.g. using stabilising agents
-
- 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
-
- 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
- G11B5/70657—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 with a skin
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/42—Magnetic properties
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Hard Magnetic Materials (AREA)
- Compounds Of Iron (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19722202853 DE2202853A1 (de) | 1972-01-21 | 1972-01-21 | Verfahren zur herstellung von feinteiligen, nadelfoermigen, magnetischen eisenoxiden |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2168562A1 true FR2168562A1 (US20110232667A1-20110929-C00004.png) | 1973-08-31 |
| FR2168562B1 FR2168562B1 (US20110232667A1-20110929-C00004.png) | 1978-12-29 |
Family
ID=5833644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7301966A Expired FR2168562B1 (US20110232667A1-20110929-C00004.png) | 1972-01-21 | 1973-01-19 |
Country Status (10)
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2330650A1 (fr) * | 1975-11-08 | 1977-06-03 | Basf Ag | Procede de preparation de l'oxyde de fer g-(iii). |
| FR2330651A1 (fr) * | 1975-11-08 | 1977-06-03 | Basf Ag | Procede de preparation de l'oxyde de fer g-(iii) |
| FR2336350A1 (fr) * | 1975-11-08 | 1977-07-22 | Basf Ag | Procede de preparation d'oxyde hydrate aciculaire de fer a-(iii) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4096292A (en) * | 1975-01-14 | 1978-06-20 | Montedison S.P.A. | Process for preparing ferrimagnetic acicular ferric oxide |
| DE2520643C2 (de) * | 1975-05-09 | 1983-11-17 | Basf Ag, 6700 Ludwigshafen | Verfahren zur Herstellung von γ-Eisen(III)oxid |
| JPS5295097A (en) * | 1976-02-04 | 1977-08-10 | Nippon Telegr & Teleph Corp <Ntt> | Magnetic recording material |
| US4133677A (en) * | 1976-04-05 | 1979-01-09 | Toda Kogyo Corp. | Process for producing acicular magnetic metallic particle powder |
| US4136158A (en) * | 1976-11-01 | 1979-01-23 | Toda Kogyo Corp. | Production of acicular magnetic iron oxides |
| JPS5356196A (en) * | 1976-11-01 | 1978-05-22 | Toda Kogyo Corp | Process for preparing acicular alphaafeooh particle |
| JPS5420998A (en) * | 1977-07-18 | 1979-02-16 | Toda Kogyo Corp | Method of making coocontaining acicular crystal magnetic ferrite particulates |
| DE2801395C2 (de) * | 1978-01-13 | 1982-04-22 | Bayer Ag, 5090 Leverkusen | Thermisch stabilisiertes ferrimagnetisches Eisenoxid |
| US4221607A (en) * | 1979-03-23 | 1980-09-09 | Cities Service Company | Calcining effect of synthetic iron oxide |
| US4299635A (en) * | 1979-03-23 | 1981-11-10 | Theodore Dickerson | Flow characteristics of synthetic iron oxide |
| JPS5626729A (en) * | 1979-08-11 | 1981-03-14 | Tdk Corp | Powdered magnetic material for magnetic recording medium |
| US4291010A (en) * | 1979-09-05 | 1981-09-22 | Titan Kogyo Kabushiki Kaisha | Heat stable yellow iron oxides |
| JPS5676510A (en) * | 1979-11-28 | 1981-06-24 | Tdk Corp | Manufacture of magnetic recording material |
| JPS5677931A (en) * | 1979-11-28 | 1981-06-26 | Tdk Corp | Magnetic recording medium and its producton |
| DE3022875A1 (de) * | 1980-06-19 | 1982-01-14 | Bayer Ag, 5090 Leverkusen | Verfahren zur herstellung von eisenoxidpigmenten mit verbesserter reinheit sowie deren verwendung |
| JPS5763605A (en) * | 1980-10-01 | 1982-04-17 | Kanto Denka Kogyo Kk | Manufacture of metallic magnetic powder |
| US4451495A (en) * | 1982-08-30 | 1984-05-29 | International Business Machines Corporation | Increasing magnetic particle concentration in magnetic coatings |
| US5045214A (en) * | 1983-03-21 | 1991-09-03 | Union Oil Company Of California | Methods for removing substances from aqueous solutions |
| DE3484652D1 (de) * | 1983-03-21 | 1991-07-04 | Union Oil Co | Verfahren zum abtrennen schwerer metalle aus waessrigen loesungen durch kopraezipitation. |
| EP0160496B1 (en) * | 1984-04-28 | 1989-09-13 | Toda Kogyo Corp. | Magnetic iron oxide particles |
| US5286687A (en) * | 1991-08-09 | 1994-02-15 | Agency Of Industrial Science And Technology | Method for production of needlelike crystalline particles |
| US5814164A (en) * | 1994-11-09 | 1998-09-29 | American Scientific Materials Technologies L.P. | Thin-walled, monolithic iron oxide structures made from steels, and methods for manufacturing such structures |
| US6461562B1 (en) | 1999-02-17 | 2002-10-08 | American Scientific Materials Technologies, Lp | Methods of making sintered metal oxide articles |
| DE102008003615A1 (de) * | 2008-01-09 | 2009-07-16 | Magforce Nanotechnologies Ag | Magnetische Transducer |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1176544B (de) * | 1957-09-18 | 1964-08-20 | Hermsdorf Keramik Veb | Verfahren zur Herstellung von hartmagnetischen Oxydwerkstoffen |
| US3115470A (en) * | 1961-03-29 | 1963-12-24 | Georgia Kaolin Co | Magnetic material, magnetic impulse recording members, and methods of making magnetic material |
| DE1252646B (de) * | 1965-07-26 | 1967-10-26 | VEB Filmfabrik Wolfen Wolfen (Kr Bitterfeld) | Verfahren zur Stabili sierung von a-FeO(OH) fur die Herstellung von } Fe2O3 |
-
0
- BE BE794292D patent/BE794292A/xx unknown
-
1972
- 1972-01-21 DE DE19722202853 patent/DE2202853A1/de active Pending
-
1973
- 1973-01-11 US US05/322,819 patent/US3947502A/en not_active Expired - Lifetime
- 1973-01-17 NL NL7300705A patent/NL7300705A/xx not_active Application Discontinuation
- 1973-01-19 GB GB283273A patent/GB1402801A/en not_active Expired
- 1973-01-19 FR FR7301966A patent/FR2168562B1/fr not_active Expired
- 1973-01-19 IT IT47788/73A patent/IT976964B/it active
- 1973-01-19 PL PL1973160336A patent/PL87763B1/pl unknown
- 1973-01-19 CA CA161,611A patent/CA1019561A/en not_active Expired
- 1973-01-20 JP JP48008297A patent/JPS4883100A/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2330650A1 (fr) * | 1975-11-08 | 1977-06-03 | Basf Ag | Procede de preparation de l'oxyde de fer g-(iii). |
| FR2330651A1 (fr) * | 1975-11-08 | 1977-06-03 | Basf Ag | Procede de preparation de l'oxyde de fer g-(iii) |
| FR2336350A1 (fr) * | 1975-11-08 | 1977-07-22 | Basf Ag | Procede de preparation d'oxyde hydrate aciculaire de fer a-(iii) |
Also Published As
| Publication number | Publication date |
|---|---|
| PL87763B1 (US20110232667A1-20110929-C00004.png) | 1976-07-31 |
| FR2168562B1 (US20110232667A1-20110929-C00004.png) | 1978-12-29 |
| JPS4883100A (US20110232667A1-20110929-C00004.png) | 1973-11-06 |
| IT976964B (it) | 1974-09-10 |
| CA1019561A (en) | 1977-10-25 |
| US3947502A (en) | 1976-03-30 |
| DE2202853A1 (de) | 1973-07-26 |
| GB1402801A (en) | 1975-08-13 |
| NL7300705A (US20110232667A1-20110929-C00004.png) | 1973-07-24 |
| BE794292A (fr) | 1973-07-19 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |