BE729304A - - Google Patents
Info
- Publication number
- BE729304A BE729304A BE729304DA BE729304A BE 729304 A BE729304 A BE 729304A BE 729304D A BE729304D A BE 729304DA BE 729304 A BE729304 A BE 729304A
- Authority
- BE
- Belgium
- 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
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
- G11B5/70605—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 metals or alloys
- G11B5/70615—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 metals or alloys containing Fe metal or alloys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/06—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder
- H01F1/065—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder obtained by a reduction
Landscapes
- Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Power Engineering (AREA)
- Hard Magnetic Materials (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Soft Magnetic Materials (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6803123A NL6803123A (xx) | 1968-03-05 | 1968-03-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE729304A true BE729304A (xx) | 1969-09-03 |
Family
ID=19802944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE729304D Expired BE729304A (xx) | 1968-03-05 | 1969-03-03 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3607219A (xx) |
| AT (1) | AT306763B (xx) |
| BE (1) | BE729304A (xx) |
| CH (1) | CH515331A (xx) |
| FR (1) | FR2003248A1 (xx) |
| GB (1) | GB1204991A (xx) |
| NL (1) | NL6803123A (xx) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2130921A1 (de) * | 1970-06-23 | 1971-12-30 | Sony Corp | Verfahren zur Herstellung von Magnetpulver |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4207092A (en) * | 1977-03-03 | 1980-06-10 | E. I. Du Pont De Nemours And Company | Acicular α-iron particles, their preparation and recording media employing same |
| JPS5813008B2 (ja) * | 1977-10-06 | 1983-03-11 | 日本ビクター株式会社 | 磁性鉄粉の製造方法 |
| US4310349A (en) * | 1979-02-02 | 1982-01-12 | Ampex Corporation | Highly orientable iron particles |
| US4316738A (en) * | 1979-02-02 | 1982-02-23 | Ampex Corporation | Economical process for producing metal particles for magnetic recording |
| US4273807A (en) * | 1979-03-19 | 1981-06-16 | E. I. Du Pont De Nemours And Company | Acicular α-iron particles and recording media employing same |
| US4318734A (en) * | 1980-02-25 | 1982-03-09 | Ampex Corporation | Reduction of iron oxide utilizing dehydrating agent |
| JPS5980901A (ja) * | 1982-11-01 | 1984-05-10 | Fuji Photo Film Co Ltd | 強磁性金属粉末の製造法 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3005701A (en) * | 1957-10-15 | 1961-10-24 | Bethlehem Steel Corp | Method of making melting stock by direct reduction |
| US3347659A (en) * | 1965-05-19 | 1967-10-17 | Hydrocarbon Research Inc | Process of reducing iron oxide |
-
1968
- 1968-03-05 NL NL6803123A patent/NL6803123A/xx unknown
-
1969
- 1969-02-26 US US802679*A patent/US3607219A/en not_active Expired - Lifetime
- 1969-02-28 GB GB00765/69A patent/GB1204991A/en not_active Expired
- 1969-03-03 BE BE729304D patent/BE729304A/xx not_active Expired
- 1969-03-03 CH CH318569A patent/CH515331A/de not_active IP Right Cessation
- 1969-03-04 FR FR6905884A patent/FR2003248A1/fr not_active Withdrawn
- 1969-03-04 AT AT211969A patent/AT306763B/de not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2130921A1 (de) * | 1970-06-23 | 1971-12-30 | Sony Corp | Verfahren zur Herstellung von Magnetpulver |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1906531B2 (de) | 1977-01-20 |
| DE1906531A1 (de) | 1969-10-02 |
| NL6803123A (xx) | 1969-09-09 |
| FR2003248A1 (xx) | 1969-11-07 |
| US3607219A (en) | 1971-09-21 |
| GB1204991A (en) | 1970-09-09 |
| AT306763B (de) | 1973-04-25 |
| CH515331A (de) | 1971-11-15 |