NL141686B - Werkwijze ter bereiding van naaldvormige ijzerdeeltjes, alsmede magnetisch registreerelement, zoals een magnetische band vervaardigd met toepassing van deze werkwijze. - Google Patents
Werkwijze ter bereiding van naaldvormige ijzerdeeltjes, alsmede magnetisch registreerelement, zoals een magnetische band vervaardigd met toepassing van deze werkwijze.Info
- Publication number
- NL141686B NL141686B NL717103820A NL7103820A NL141686B NL 141686 B NL141686 B NL 141686B NL 717103820 A NL717103820 A NL 717103820A NL 7103820 A NL7103820 A NL 7103820A NL 141686 B NL141686 B NL 141686B
- Authority
- NL
- Netherlands
- Prior art keywords
- magnetic
- applying
- regulating element
- shaped iron
- iron particles
- Prior art date
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title 2
- 229910052742 iron Inorganic materials 0.000 title 1
- 238000004519 manufacturing process Methods 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- 239000002245 particle Substances 0.000 title 1
- 230000001105 regulatory effect Effects 0.000 title 1
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
- G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
- G11B5/65—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition
- G11B5/658—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition containing oxygen, e.g. molecular oxygen or magnetic oxide
-
- 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)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Hard Magnetic Materials (AREA)
- Compounds Of Iron (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Powder Metallurgy (AREA)
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US3988270A | 1970-05-22 | 1970-05-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NL7103820A NL7103820A (cg-RX-API-DMAC10.html) | 1971-11-24 |
| NL141686B true NL141686B (nl) | 1974-03-15 |
Family
ID=21907838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL717103820A NL141686B (nl) | 1970-05-22 | 1971-03-22 | Werkwijze ter bereiding van naaldvormige ijzerdeeltjes, alsmede magnetisch registreerelement, zoals een magnetische band vervaardigd met toepassing van deze werkwijze. |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3623859A (cg-RX-API-DMAC10.html) |
| JP (1) | JPS515608B1 (cg-RX-API-DMAC10.html) |
| BE (1) | BE767308A (cg-RX-API-DMAC10.html) |
| FR (1) | FR2090199B1 (cg-RX-API-DMAC10.html) |
| GB (1) | GB1291406A (cg-RX-API-DMAC10.html) |
| NL (1) | NL141686B (cg-RX-API-DMAC10.html) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2212933A1 (de) * | 1972-03-17 | 1973-09-20 | Philips Nv | Verfahren zur herstellung eines im wesentlichen aus eisen bestehenden metallpulvers |
| JPS54122664A (en) * | 1978-03-16 | 1979-09-22 | Kanto Denka Kogyo Kk | Production of magnetic powder for magnetic recording based on iron |
| US4256484A (en) * | 1979-07-30 | 1981-03-17 | Pfizer Inc. | Metallic iron particles for magnetic recording |
| US4305752A (en) * | 1979-07-30 | 1981-12-15 | Pfizer Inc. | Metallic iron particles for magnetic recording |
| DE3116489A1 (de) * | 1981-04-25 | 1982-11-11 | Basf Ag, 6700 Ludwigshafen | Verfahren zur stabilisierung pyrophorer, im wesentlichen aus eisen bestehender ferromagnetischer nadelfoermiger metallteilchen |
| DE3901027A1 (de) * | 1989-01-14 | 1990-07-26 | Studiengesellschaft Kohle Mbh | Nadelfoermige eisen-magnetpigmente mit einstellbarer koezitivfeldstaerke und verfahren zu deren herstellung |
| US8653824B1 (en) * | 2009-12-16 | 2014-02-18 | Western Digital (Fremont), Llc | Delta temperature test method and system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3206338A (en) * | 1963-05-10 | 1965-09-14 | Du Pont | Non-pyrophoric, ferromagnetic acicular particles and their preparation |
-
1970
- 1970-05-22 US US39882A patent/US3623859A/en not_active Expired - Lifetime
-
1971
- 1971-03-22 NL NL717103820A patent/NL141686B/xx not_active IP Right Cessation
- 1971-04-02 JP JP46019745A patent/JPS515608B1/ja active Pending
- 1971-04-21 FR FR7114072A patent/FR2090199B1/fr not_active Expired
- 1971-05-06 GB GB03447/71A patent/GB1291406A/en not_active Expired
- 1971-05-18 BE BE767308A patent/BE767308A/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| NL7103820A (cg-RX-API-DMAC10.html) | 1971-11-24 |
| DE2118103B2 (de) | 1973-01-25 |
| US3623859A (en) | 1971-11-30 |
| GB1291406A (en) | 1972-10-04 |
| FR2090199B1 (cg-RX-API-DMAC10.html) | 1974-05-31 |
| DE2118103A1 (de) | 1972-02-03 |
| JPS515608B1 (cg-RX-API-DMAC10.html) | 1976-02-21 |
| FR2090199A1 (cg-RX-API-DMAC10.html) | 1972-01-14 |
| BE767308A (fr) | 1971-10-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| NL150500B (nl) | Werkwijze ter bereiding van een verfsamenstelling. | |
| NL159083B (nl) | Werkwijze ter bereiding van chinonen. | |
| NL159129B (nl) | Werkwijze ter bereiding van een thermohardende bekledingssamenstelling. | |
| NL143614B (nl) | Werkwijze ter bereiding van een bekledingsmateriaal. | |
| NL162964C (nl) | Werkwijze voor het bereiden van een magnetische legering. | |
| NL155116B (nl) | Werkwijze ter vervaardiging van een magnetisch materiaal, alsmede het aldus verkregen magnetische materiaal. | |
| NL175478C (nl) | Magnetische draad en werkwijze voor de vervaardiging van zulk een draad. | |
| NL150938B (nl) | Werkwijze voor het bereiden van naaldvormige stabiele magnetische ijzerdeeltjes. | |
| NL147162B (nl) | Werkwijze ter bereiding van polybutenameren. | |
| NL166044C (nl) | Werkwijze ter bereiding van harsmengsels. | |
| NL141686B (nl) | Werkwijze ter bereiding van naaldvormige ijzerdeeltjes, alsmede magnetisch registreerelement, zoals een magnetische band vervaardigd met toepassing van deze werkwijze. | |
| NL151380B (nl) | Werkwijze ter bereiding van een 7-halogeen-7-desoxylincomycine. | |
| NL166971C (nl) | Werkwijze ter bereiding van zinkstof bevattende, corro- siewerende bekledingspreparaten. | |
| NL156710B (nl) | Werkwijze ter bereiding van sorptiemiddelen, alsmede gevormde sorptiemiddelen bereid volgens deze werkwijze. | |
| NL139519B (nl) | Werkwijze ter bereiding van een mengsel van adiponitrile en 1,4-dicyaanbutenen. | |
| NL170847C (nl) | Werkwijze ter bereiding van 5-cyclohexadeceen-1-on, en werkwijze ter bereiding van een reukstofcompositie. | |
| NL141567B (nl) | Werkwijze ter bereiding van een bekledingsmateriaal. | |
| NL174356C (nl) | Werkwijze ter bereiding van distannanen. | |
| NL169614B (nl) | Werkwijze ter bereiding van een waspoeder. | |
| NL172049C (nl) | Werkwijze ter bereiding van kunstmest. | |
| NL7903399A (nl) | Werkwijze ter bereiding van 2-triazolobenzodiazepinen. | |
| NL170527C (nl) | Werkwijze ter bereiding van 1,3-dichloorpropeen. | |
| NL145236B (nl) | Werkwijze ter bereiding van een oxiranverbinding. | |
| NL148431B (nl) | Werkwijze ter bereiding van gestabiliseerde sub-micron ijzerdeeltjes. | |
| NL171709C (nl) | Werkwijze ter bereiding van 17alfa-ethinyl-17beta-hydroxysteroiden. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NL80 | Information provided on patent owner name for an already discontinued patent |
Owner name: AMPEX |
|
| V4 | Discontinued because of reaching the maximum lifetime of a patent |