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
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)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Dermatology (AREA)
- General Health & Medical Sciences (AREA)
- Compounds Of Iron (AREA)
- Silicon Compounds (AREA)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED24600A DE1034163B (en) | 1956-12-31 | 1956-12-31 | Process for the production of finely divided, ferromagnetic iron oxide |
CH5178957A CH372648A (en) | 1956-12-31 | 1957-10-21 | Process for the production of finely divided ferromagnetic iron oxide |
NL222078A NL222078A (en) | 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 (en) | 1956-12-31 | 1956-12-31 | Process for the production of finely divided, ferromagnetic iron oxide |
Publications (2)
Publication Number | Publication Date |
---|---|
DE1034163B DE1034163B (en) | 1958-07-17 |
DE1034163C2 true DE1034163C2 (en) | 1958-12-24 |
Family
ID=7038241
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DED24600A Granted DE1034163B (en) | 1956-12-31 | 1956-12-31 | Process for the production of finely divided, ferromagnetic iron oxide |
Country Status (5)
Country | Link |
---|---|
US (1) | US2950955A (en) |
CH (1) | CH372648A (en) |
DE (1) | DE1034163B (en) |
GB (1) | GB836275A (en) |
NL (1) | NL222078A (en) |
Families Citing this family (5)
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 |
US5794791A (en) * | 1987-11-30 | 1998-08-18 | Genesis Research Corporation | Coal cleaning process |
CA1327342C (en) * | 1987-11-30 | 1994-03-01 | James Kelly Kindig | Process for beneficiating particulate solids |
WO1993007967A1 (en) * | 1991-10-15 | 1993-04-29 | Genesis Research Corporation | Coal cleaning process |
Family Cites Families (6)
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 (en) * | 1951-06-04 | |||
GB726250A (en) * | 1952-04-02 | 1955-03-16 | Degussa | Process for the production of finely divided oxides |
-
1956
- 1956-12-31 DE DED24600A patent/DE1034163B/en active Granted
-
1957
- 1957-10-21 CH CH5178957A patent/CH372648A/en unknown
- 1957-11-01 NL NL222078A patent/NL222078A/xx unknown
- 1957-12-10 US US701708A patent/US2950955A/en not_active Expired - Lifetime
- 1957-12-30 GB GB40290/57A patent/GB836275A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2950955A (en) | 1960-08-30 |
CH372648A (en) | 1963-10-31 |
NL222078A (en) | 1963-03-15 |
DE1034163B (en) | 1958-07-17 |
GB836275A (en) | 1960-06-01 |