CH522567A - Verfahren zur Herstellung von ferromagnetischem Chromdioxid - Google Patents
Verfahren zur Herstellung von ferromagnetischem ChromdioxidInfo
- Publication number
- CH522567A CH522567A CH1492669A CH1492669A CH522567A CH 522567 A CH522567 A CH 522567A CH 1492669 A CH1492669 A CH 1492669A CH 1492669 A CH1492669 A CH 1492669A CH 522567 A CH522567 A CH 522567A
- Authority
- CH
- Switzerland
- Prior art keywords
- production
- chromium dioxide
- ferromagnetic chromium
- ferromagnetic
- dioxide
- Prior art date
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
- G11B5/70636—CrO2
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G37/00—Compounds of chromium
- C01G37/02—Oxides or hydrates thereof
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Hard Magnetic Materials (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Magnetic Record Carriers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681802469 DE1802469A1 (de) | 1968-10-11 | 1968-10-11 | Verfahren zur Herstellung von ferromagnetischem Chromdioxid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH522567A true CH522567A (de) | 1972-06-30 |
Family
ID=5710250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH1492669A CH522567A (de) | 1968-10-11 | 1969-10-03 | Verfahren zur Herstellung von ferromagnetischem Chromdioxid |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS4840799B1 (da) |
| BE (1) | BE740103A (da) |
| CH (1) | CH522567A (da) |
| DE (1) | DE1802469A1 (da) |
| FR (1) | FR2020441B1 (da) |
| GB (1) | GB1287614A (da) |
| NL (1) | NL6915398A (da) |
| SE (1) | SE365492B (da) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1244457B (de) * | 1963-01-04 | 1967-07-13 | Ernst Zimlich | Motorisch angetriebener Rasenmaeher mit waagerecht umlaufendem Messer |
| DE2022820C3 (de) * | 1970-05-11 | 1980-01-03 | Basf Ag, 6700 Ludwigshafen | Verfahren zur Herstellung von hochkoerzitivem Chromdioxid |
| IT1045191B (it) * | 1975-10-31 | 1980-05-10 | Montedison Spa | Procedimento per la produzione di biossido di cromo ferromagnetico |
-
1968
- 1968-10-11 DE DE19681802469 patent/DE1802469A1/de active Pending
-
1969
- 1969-10-03 CH CH1492669A patent/CH522567A/de not_active IP Right Cessation
- 1969-10-07 GB GB4913769A patent/GB1287614A/en not_active Expired
- 1969-10-10 NL NL6915398A patent/NL6915398A/xx unknown
- 1969-10-10 BE BE740103D patent/BE740103A/xx unknown
- 1969-10-10 SE SE13980/69A patent/SE365492B/xx unknown
- 1969-10-10 FR FR6934842A patent/FR2020441B1/fr not_active Expired
- 1969-10-11 JP JP44081035A patent/JPS4840799B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1802469A1 (de) | 1971-10-28 |
| BE740103A (da) | 1970-04-10 |
| NL6915398A (da) | 1970-04-14 |
| GB1287614A (en) | 1972-09-06 |
| JPS4840799B1 (da) | 1973-12-03 |
| FR2020441A1 (da) | 1970-07-10 |
| FR2020441B1 (da) | 1973-12-07 |
| SE365492B (da) | 1974-03-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |