NL7305964A - - Google Patents

Info

Publication number: NL7305964A
Authority: NL; Netherlands

Application number

NL7305964A

Priority date (The priority date 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 date listed.)

1972-04-29

Filing date

1973-04-27

Publication date

1973-10-31

1972-04-29 Priority claimed from DE19722221264 external-priority patent/DE2221264C3/de

1973-04-27 Application filed filed Critical

1973-10-31 Publication of NL7305964A publication Critical patent/NL7305964A/xx

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
- G11B5/70668—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 containing a dopant
- G11B5/70673—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 containing a dopant containing Co
- 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
- G11B5/70647—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
- 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
- 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
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/50—Solid solutions
- C01P2002/52—Solid solutions containing elements as dopants
- 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
- C01P2004/00—Particle morphology
- C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
- C01P2004/82—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases
- C01P2004/84—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases one phase coated with the other
- 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)
Health & Medical Sciences (AREA)
Dermatology (AREA)
General Health & Medical Sciences (AREA)
Hard Magnetic Materials (AREA)
Compounds Of Iron (AREA)

NL7305964A 1972-04-29 1973-04-27 NL7305964A (pl)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE19722221264 DE2221264C3 (de)		1972-04-29	Cobalt- und siliciumoxidhaltige nadeiförmige ferrimagnetische Eisenoxide

Publications (1)

Publication Number	Publication Date
NL7305964A true NL7305964A (pl)	1973-10-31

Family

ID=5843730

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL7305964A NL7305964A (pl)	1972-04-29	1973-04-27

Country Status (8)

Country	Link
JP (1)	JPS4941299A (pl)
BE (1)	BE798807A (pl)
CA (1)	CA1019562A (pl)
FR (1)	FR2183052B1 (pl)
GB (1)	GB1417505A (pl)
IT (1)	IT986077B (pl)
NL (1)	NL7305964A (pl)
PL (1)	PL85585B1 (pl)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5295097A (en) *	1976-02-04	1977-08-10	Nippon Telegr & Teleph Corp <Ntt>	Magnetic recording material
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
JPS5493697A (en) *	1978-01-04	1979-07-24	Toda Kogyo Corp	Manufacture of co contained needleelike crystal magnetic iron oxide particle powder

1973
- 1973-04-27 GB GB2016373A patent/GB1417505A/en not_active Expired
- 1973-04-27 IT IT4968873A patent/IT986077B/it active
- 1973-04-27 CA CA169,688A patent/CA1019562A/en not_active Expired
- 1973-04-27 NL NL7305964A patent/NL7305964A/xx active Search and Examination
- 1973-04-27 BE BE130485A patent/BE798807A/xx not_active IP Right Cessation
- 1973-04-27 FR FR7315312A patent/FR2183052B1/fr not_active Expired
- 1973-04-28 PL PL16220273A patent/PL85585B1/pl unknown
- 1973-05-01 JP JP48047679A patent/JPS4941299A/ja active Pending

Also Published As

Publication number	Publication date
JPS4941299A (pl)	1974-04-18
DE2221264B2 (de)	1977-07-07
BE798807A (fr)	1973-10-29
FR2183052A1 (pl)	1973-12-14
DE2221264A1 (de)	1973-11-15
FR2183052B1 (pl)	1976-03-05
IT986077B (it)	1975-01-10
CA1019562A (en)	1977-10-25
GB1417505A (en)	1975-12-10
PL85585B1 (pl)	1976-04-30

Legal Events

Date	Code	Title
1980-05-27	BA	A request for search or an international-type search has been filed
1980-09-25	BB	A search report has been drawn up
1980-10-27	BC	A request for examination has been filed
1985-01-01	A85	Still pending on 85-01-01
1988-11-01	BN	A decision not to publish the application has become irrevocable

Publication	Publication Date	Title
FR2168562B1 (pl)	1978-12-29
JPS4895869A (pl)	1973-12-08
JPS4941299A (pl)	1974-04-18
JPS543169Y2 (pl)	1979-02-13
JPS4896829A (pl)	1973-12-11
JPS5034156B2 (pl)	1975-11-06
JPS523771B2 (pl)	1977-01-29
JPS5033116B2 (pl)	1975-10-27
JPS49107182U (pl)	1974-09-12
JPS4962374U (pl)	1974-05-31
JPS4898956A (pl)	1973-12-15
JPS4988020U (pl)	1974-07-31
JPS4977113A (pl)	1974-07-25
CH571105B5 (pl)	1975-12-31
CH568313A5 (pl)	1975-10-31
CH563739A5 (pl)	1975-07-15
CH563039A5 (pl)	1975-06-13
AU480295A (pl)	1974-05-02
CH576991A5 (pl)	1976-06-30
CH563042A5 (pl)	1975-06-13
CH559647A5 (pl)	1975-03-14
CH569204A5 (pl)	1975-11-14
CH572344A5 (pl)	1976-02-13
CH571663A5 (pl)	1976-01-15
CH568120A5 (pl)	1975-10-31