OA00732A - Corps de ferrite au nickel polycristallin, son procédé de fabrication et tête de magnétophone constituée par ce tel corps. - Google Patents

Corps de ferrite au nickel polycristallin, son procédé de fabrication et tête de magnétophone constituée par ce tel corps.

Info

Publication number
OA00732A
OA00732A OA50811A OA50811A OA00732A OA 00732 A OA00732 A OA 00732A OA 50811 A OA50811 A OA 50811A OA 50811 A OA50811 A OA 50811A OA 00732 A OA00732 A OA 00732A
Authority
OA
OAPI
Prior art keywords
manufacturing process
tape recorder
head formed
nickel ferrite
recorder head
Prior art date
Application number
OA50811A
Other languages
English (en)
French (fr)
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of OA00732A publication Critical patent/OA00732A/xx

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/265—Compositions containing one or more ferrites of the group comprising manganese or zinc and one or more ferrites of the group comprising nickel, copper or cobalt

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Soft Magnetic Materials (AREA)
  • Magnetic Ceramics (AREA)
  • Magnetic Heads (AREA)
OA50811A 1962-07-25 1964-12-12 Corps de ferrite au nickel polycristallin, son procédé de fabrication et tête de magnétophone constituée par ce tel corps. OA00732A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL281410 1962-07-25

Publications (1)

Publication Number Publication Date
OA00732A true OA00732A (fr) 1967-07-15

Family

ID=19754007

Family Applications (1)

Application Number Title Priority Date Filing Date
OA50811A OA00732A (fr) 1962-07-25 1964-12-12 Corps de ferrite au nickel polycristallin, son procédé de fabrication et tête de magnétophone constituée par ce tel corps.

Country Status (12)

Country Link
US (1) US3472780A (nl)
AT (2) AT272690B (nl)
BE (1) BE635327A (nl)
CH (1) CH443111A (nl)
DE (1) DE1449403B2 (nl)
DK (1) DK116014B (nl)
ES (1) ES290223A1 (nl)
FR (1) FR1390192A (nl)
GB (1) GB1010577A (nl)
LU (1) LU44114A1 (nl)
NL (1) NL281410A (nl)
OA (1) OA00732A (nl)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1799008B1 (de) * 1967-02-14 1976-12-16 Matsushita Electric Ind Co Ltd Gesintertes ferrit und verfahren zu seiner herstellung
US3524252A (en) * 1968-08-05 1970-08-18 Ibm Method of ultrasonically treating ferrite cores
NL6904352A (nl) * 1969-03-20 1970-09-22
US3948785A (en) * 1971-01-04 1976-04-06 Jean Berchtold Process of manufacturing ferrite materials with improved magnetic and mechanical properties
US4059664A (en) * 1971-12-14 1977-11-22 Thomson-Csf Method of manufacturing ferrimagnetic material for recording, read out and erase heads utilized in magnetic layer devices
FR2165011A5 (nl) * 1971-12-14 1973-08-03 Thomson Csf
JPS605044B2 (ja) * 1975-02-07 1985-02-08 日立金属株式会社 フエライトの製造方法
JPS6012767B2 (ja) * 1976-10-22 1985-04-03 日立金属株式会社 高密度Ｎｉ−Ｚｎフエライトの製造方法
JPS58144839A (ja) * 1982-02-13 1983-08-29 Tdk Corp 磁性キヤリヤ粒子
US4440713A (en) * 1982-09-30 1984-04-03 International Business Machines Corp. Process for making fine magnetic ferrite powder and dense ferrite blocks
US6057649A (en) * 1993-05-11 2000-05-02 U.S. Philips Corporation Illumination unit, electrodeless low-pressure discharge lamp, and coil suitable for use therein
EP0624886B1 (en) * 1993-05-11 1997-12-17 Koninklijke Philips Electronics N.V. Sintered transformer or inductor core of NiZn ferrite material
BE1007053A3 (nl) * 1993-05-11 1995-02-28 Philips Electronics Nv Gesinterde transformatorkern van nizn-ferrietmateriaal.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452529A (en) * 1941-10-24 1948-10-26 Hartford Nat Bank & Trust Co Magnet core
US2703787A (en) * 1952-11-18 1955-03-08 Henry L Crowley & Company Inc Method for preparing magnetic compositions
US3038199A (en) * 1960-01-27 1962-06-12 Western Electric Co Method and apparatus for pressing moldable material
US3189550A (en) * 1961-03-07 1965-06-15 Walter W Malinofsky Process of making ferrite magnetic core material

Also Published As

Publication number Publication date
DK116014B (da) 1969-12-01
AT252590B (de) 1967-02-27
AT272690B (de) 1969-07-10
GB1010577A (en) 1965-11-17
ES290223A1 (es) 1963-10-16
CH443111A (de) 1967-08-31
BE635327A (nl) 1964-01-23
NL281410A (nl) 1964-12-10
DE1449403A1 (de) 1969-08-28
US3472780A (en) 1969-10-14
FR1390192A (fr) 1965-02-26
LU44114A1 (nl) 1963-09-23
DE1449403B2 (de) 1976-07-29

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