NL180790C - Met kobalt gemodificeerde magnetische ijzeroxydedeeltjes; magnetisch impulsregistratieorgaan, dat dergelijke deeltjes bevat. - Google Patents

Met kobalt gemodificeerde magnetische ijzeroxydedeeltjes; magnetisch impulsregistratieorgaan, dat dergelijke deeltjes bevat.

Info

Publication number
NL180790C
NL180790C NL7907813A NL7907813A NL180790C NL 180790 C NL180790 C NL 180790C NL 7907813 A NL7907813 A NL 7907813A NL 7907813 A NL7907813 A NL 7907813A NL 180790 C NL180790 C NL 180790C
Authority
NL
Netherlands
Prior art keywords
particles
cobalt
iron oxide
body containing
magnetic
Prior art date
Application number
NL7907813A
Other languages
English (en)
Dutch (nl)
Other versions
NL180790B (nl
NL7907813A (nl
Original Assignee
Pfizer
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.)
Filing date
Publication date
Application filed by Pfizer filed Critical Pfizer
Publication of NL7907813A publication Critical patent/NL7907813A/nl
Publication of NL180790B publication Critical patent/NL180790B/xx
Application granted granted Critical
Publication of NL180790C publication Critical patent/NL180790C/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
    • 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
    • G11B5/70678—Ferrites
    • G11B5/70684—Ferro-ferrioxydes
    • 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
    • G11B5/70678—Ferrites
    • G11B5/70684—Ferro-ferrioxydes
    • G11B5/70694—Non-stoechiometric ferro-ferrioxydes, e.g. berthollide
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31786—Of polyester [e.g., alkyd, etc.]
NL7907813A 1978-10-25 1979-10-24 Met kobalt gemodificeerde magnetische ijzeroxydedeeltjes; magnetisch impulsregistratieorgaan, dat dergelijke deeltjes bevat. NL180790C (nl)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US95449878A 1978-10-25 1978-10-25
US95449878 1978-10-25
US06/054,393 US4276183A (en) 1978-10-25 1979-07-02 Cobalt modified magnetic iron oxide
US5439379 1979-07-02

Publications (3)

Publication Number Publication Date
NL7907813A NL7907813A (nl) 1980-04-29
NL180790B NL180790B (nl) 1986-11-17
NL180790C true NL180790C (nl) 1987-04-16

Family

ID=26732980

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7907813A NL180790C (nl) 1978-10-25 1979-10-24 Met kobalt gemodificeerde magnetische ijzeroxydedeeltjes; magnetisch impulsregistratieorgaan, dat dergelijke deeltjes bevat.

Country Status (12)

Country Link
US (1) US4276183A (pl)
AU (1) AU512990B2 (pl)
BR (1) BR7906871A (pl)
CA (1) CA1132790A (pl)
DD (1) DD150271A5 (pl)
DE (1) DE2943017A1 (pl)
FR (1) FR2440054A1 (pl)
GB (1) GB2033886B (pl)
IT (1) IT1125591B (pl)
NL (1) NL180790C (pl)
PL (1) PL125472B1 (pl)
SE (1) SE443896B (pl)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57158015A (en) * 1981-03-26 1982-09-29 Tdk Corp Magnetic recording medium
JPS5979431A (ja) * 1982-10-29 1984-05-08 Konishiroku Photo Ind Co Ltd 磁気記録媒体
JPS6120302A (ja) * 1984-07-06 1986-01-29 Hitachi Maxell Ltd 強磁性粉末とその製造方法
US4770951A (en) * 1985-08-16 1988-09-13 Graham Magnetics, Inc. Magnetic flexible disks
US5069216A (en) * 1986-07-03 1991-12-03 Advanced Magnetics Inc. Silanized biodegradable super paramagnetic metal oxides as contrast agents for imaging the gastrointestinal tract
US5219554A (en) 1986-07-03 1993-06-15 Advanced Magnetics, Inc. Hydrated biodegradable superparamagnetic metal oxides
DE68923544T2 (de) * 1988-12-29 1996-03-28 Toda Kogyo Corp Magnetische Eisenoxydteilchen und Verfahren zu ihrer Herstellung.
EP2530125A1 (en) 2011-05-30 2012-12-05 Total SA Core-shell particles with catalytic activity

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3573980A (en) * 1968-02-19 1971-04-06 Minnesota Mining & Mfg Method of making magnetic particles and recording tape
US3725126A (en) * 1968-02-19 1973-04-03 Minnesota Mining & Mfg Magnetic recording tape
JPS4810994B1 (pl) * 1969-07-26 1973-04-09
BE790376A (fr) * 1971-10-27 1973-02-15 Ampex Particules d'oxyde de fer magnétique dopé au cobalt
DE2243231C2 (de) * 1972-09-01 1982-01-28 Basf Ag, 6700 Ludwigshafen Verfahren zur Herstellung von Cobalt-dotiertem γ-Eisen(III)oxid
US4064292A (en) * 1972-09-01 1977-12-20 Badische Anilin- & Soda-Fabrik, Aktiengesellschaft Manufacture of cobalt-modified γ-iron(III)oxides
JPS5941289B2 (ja) * 1974-03-12 1984-10-05 富士写真フイルム株式会社 磁性酸化鉄の製造方法
DE2520643C2 (de) * 1975-05-09 1983-11-17 Basf Ag, 6700 Ludwigshafen Verfahren zur Herstellung von γ-Eisen(III)oxid
JPS5928965B2 (ja) * 1975-12-18 1984-07-17 日立マクセル株式会社 ジキキロクヨウキヨウシセセイフンマツ
DE2650890C2 (de) * 1976-11-06 1985-12-12 Basf Ag, 6700 Ludwigshafen Verfahren zur Herstellung von nadelförmigem, kobaltdotiertem, magnetischem Eisenoxid

Also Published As

Publication number Publication date
SE443896B (sv) 1986-03-10
PL125472B1 (en) 1983-05-31
IT7926764A0 (it) 1979-10-24
AU512990B2 (en) 1980-11-06
IT1125591B (it) 1986-05-14
GB2033886A (en) 1980-05-29
DE2943017A1 (de) 1980-05-08
NL180790B (nl) 1986-11-17
DD150271A5 (de) 1981-08-19
US4276183A (en) 1981-06-30
PL219203A1 (pl) 1980-08-11
SE7907808L (sv) 1980-04-26
AU5214779A (en) 1980-05-22
CA1132790A (en) 1982-10-05
BR7906871A (pt) 1980-07-15
GB2033886B (en) 1983-03-02
FR2440054B1 (pl) 1985-03-22
FR2440054A1 (fr) 1980-05-23
NL7907813A (nl) 1980-04-29

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Legal Events

Date Code Title Description
A1A A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
A85 Still pending on 85-01-01
BK Erratum

Free format text: CORRECTION TO PAMPHLET

BK Erratum

Free format text: IN PAT.BUL.08/87,PAGES 977 AND 979:ON LINE 4 THE NAME OF THE PROPRIETOR OF THE PATENT SHOULD READ AS FOLLOWS:PFIZER PIGMENTS INC.

V1 Lapsed because of non-payment of the annual fee