NL6702239A - - Google Patents
Info
- Publication number
- NL6702239A NL6702239A NL6702239A NL6702239A NL6702239A NL 6702239 A NL6702239 A NL 6702239A NL 6702239 A NL6702239 A NL 6702239A NL 6702239 A NL6702239 A NL 6702239A NL 6702239 A NL6702239 A NL 6702239A
- Authority
- NL
- Netherlands
Links
Classifications
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- 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
- C04B33/00—Clay-wares
- C04B33/32—Burning methods
- C04B33/326—Burning methods under pressure
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- 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
- C04B33/00—Clay-wares
- C04B33/32—Burning methods
-
- 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
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- 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
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- 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
- C04B35/2658—Other ferrites containing manganese or zinc, e.g. Mn-Zn ferrites
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- 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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/133—Structure or manufacture of heads, e.g. inductive with cores composed of particles, e.g. with dust cores, with ferrite cores with cores composed of isolated magnetic particles
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- 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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
- G11B5/1871—Shaping or contouring of the transducing or guiding surface
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- 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
- H01F1/12—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 soft-magnetic materials
- H01F1/34—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 soft-magnetic materials non-metallic substances, e.g. ferrites
- H01F1/36—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 soft-magnetic materials non-metallic substances, e.g. ferrites in the form of particles
- H01F1/37—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 soft-magnetic materials non-metallic substances, e.g. ferrites in the form of particles in a bonding agent
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- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
- Y10T29/49032—Fabricating head structure or component thereof
- Y10T29/49034—Treating to affect magnetic properties
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- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
- Y10T29/49032—Fabricating head structure or component thereof
- Y10T29/49048—Machining magnetic material [e.g., grinding, etching, polishing]
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Power Engineering (AREA)
- Magnetic Heads (AREA)
- Soft Magnetic Materials (AREA)
- Ceramic Products (AREA)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB6298/67A GB1144285A (en) | 1967-02-09 | 1967-02-09 | Improvements in and relating to magnetic materials and devices |
US614889A US3557266A (en) | 1967-02-09 | 1967-02-09 | Method of eliminating the porosity and controlling the grain size of a ferrite body by a two stage hot pressing treatment |
FR94879A FR1511379A (fr) | 1967-02-09 | 1967-02-14 | Procédé de fabrication d'un noyau de tête magnétique et nouveaux produits ainsi obtenus |
NL6702239A NL6702239A (xx) | 1967-02-09 | 1967-02-14 | |
DE19671646728 DE1646728C3 (de) | 1967-02-14 | 1967-02-14 | Verfahren zur Herstellung eines Magnetkopf kernes aus Ferrit |
US00341491A US3843541A (en) | 1967-02-09 | 1973-03-14 | Magnetic head core of large grain size and low porosity |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US61488967A | 1967-02-09 | 1967-02-09 | |
GB6298/67A GB1144285A (en) | 1967-02-09 | 1967-02-09 | Improvements in and relating to magnetic materials and devices |
FR94879A FR1511379A (fr) | 1967-02-09 | 1967-02-14 | Procédé de fabrication d'un noyau de tête magnétique et nouveaux produits ainsi obtenus |
NL6702239A NL6702239A (xx) | 1967-02-09 | 1967-02-14 | |
DEM0072751 | 1967-02-14 | ||
US00341491A US3843541A (en) | 1967-02-09 | 1973-03-14 | Magnetic head core of large grain size and low porosity |
Publications (1)
Publication Number | Publication Date |
---|---|
NL6702239A true NL6702239A (xx) | 1968-08-15 |
Family
ID=27544888
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL6702239A NL6702239A (xx) | 1967-02-09 | 1967-02-14 |
Country Status (4)
Country | Link |
---|---|
US (2) | US3557266A (xx) |
FR (1) | FR1511379A (xx) |
GB (1) | GB1144285A (xx) |
NL (1) | NL6702239A (xx) |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1276692A (en) * | 1968-06-26 | 1972-06-07 | Tokyo Shibaura Electric Co | A magnetic head and a method for manufacturing the same |
US3999216A (en) * | 1970-07-30 | 1976-12-21 | Eastman Kodak Company | Material for magnetic transducer heads |
US3813693A (en) * | 1970-08-28 | 1974-05-28 | Ampex | Magnetic head with protective pockets of glass adjacent the corners of the gap |
US3761641A (en) * | 1971-06-25 | 1973-09-25 | Ampex | Magnetic head with demountable face part assembly |
US3843968A (en) * | 1971-06-25 | 1974-10-22 | Ampex | Magnetic head |
FR2165011A5 (xx) * | 1971-12-14 | 1973-08-03 | Thomson Csf | |
US3824685A (en) * | 1972-02-14 | 1974-07-23 | Bell & Howell Co | Method of making a ferrite head |
US3976735A (en) * | 1974-09-30 | 1976-08-24 | The United States Of America As Represented By The United States Energy Research And Development Administration | Fabrication of boron articles |
NL7414706A (nl) * | 1974-11-12 | 1976-05-14 | Philips Nv | Werkwijze voor het vervaardigen van een mangaan-zink-ferrietkern, in het bijzonder voor gebruik in magneetkoppen. |
US3943624A (en) * | 1975-01-24 | 1976-03-16 | U. S. Philips Corporation | Method of manufacturing a magnetic head |
USRE29476E (en) * | 1975-04-14 | 1977-11-22 | Ampex Corporation | Method for fabricating a dielectric filled ferrite toroid for use in microwave devices |
US4316923A (en) * | 1975-04-14 | 1982-02-23 | Ampex Corporation | Precision dielectric filled ferrite toroid for use in microwave devices |
US4007541A (en) * | 1975-04-14 | 1977-02-15 | Ampex Corporation | Method for fabricating a dielectric filled ferrite toroid for use in microwave devices |
DE2633597C2 (de) * | 1976-07-27 | 1983-01-13 | Bayer Ag, 5090 Leverkusen | Verfahren zur Herstellung von nadel- bis prismenförmigen ferrimagnetischen Eisenoxidpigmenten zur magnetischen Signalaufzeichnung |
DE2641319A1 (de) * | 1976-09-14 | 1978-03-16 | Siemens Ag | Ferritkern sowie verfahren zu seiner herstellung |
US4279102A (en) * | 1978-07-24 | 1981-07-21 | Magnetic Peripherals Inc. | Method of manufacturing narrow track ferrite head cores |
SE424054B (sv) * | 1979-03-01 | 1982-06-28 | Perssons Brdr | Sett och anordning for kalibrering av ett betongforemal |
US4246128A (en) * | 1979-08-08 | 1981-01-20 | Bell Telephone Laboratories, Incorporated | Method of making MnZn ferrites |
JPS6047240B2 (ja) * | 1980-05-16 | 1985-10-21 | ソニー株式会社 | フエライト単結晶 |
NL8200174A (nl) * | 1982-01-19 | 1983-08-16 | Philips Nv | Magneetkop van zink-ferro-ferriet. |
US4435511A (en) | 1982-09-13 | 1984-03-06 | Owens-Illinois, Inc. | Glasses suitable for sealing ferrites |
JPS60138708A (ja) * | 1983-12-27 | 1985-07-23 | Ngk Insulators Ltd | 磁気ヘッド用コアの製造法 |
US4552710A (en) * | 1984-01-03 | 1985-11-12 | International Business Machines Corporation | Process of hot isostatic pressing of ferrite material |
GB2241919B (en) * | 1990-03-12 | 1993-06-02 | Marconi Electronic Devices | Method of manufacture |
DE69201579T2 (de) * | 1991-03-15 | 1995-11-02 | Sony Corp | Polykristalline Ferrite. |
EP1030318A4 (en) * | 1998-09-07 | 2006-03-22 | Tdk Corp | MANGANESE ZINC FERRITE AND PROCESS FOR PRODUCING THE SAME |
JP2000246512A (ja) * | 1998-12-28 | 2000-09-12 | Ngk Spark Plug Co Ltd | ダイヤモンド類被覆切削工具 |
US7581859B2 (en) * | 2005-09-14 | 2009-09-01 | Donnelly Corp. | Display device for exterior rearview mirror |
-
1967
- 1967-02-09 GB GB6298/67A patent/GB1144285A/en not_active Expired
- 1967-02-09 US US614889A patent/US3557266A/en not_active Expired - Lifetime
- 1967-02-14 NL NL6702239A patent/NL6702239A/xx unknown
- 1967-02-14 FR FR94879A patent/FR1511379A/fr not_active Expired
-
1973
- 1973-03-14 US US00341491A patent/US3843541A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE1646728A1 (de) | 1972-04-27 |
DE1646728B2 (de) | 1975-05-28 |
US3557266A (en) | 1971-01-19 |
GB1144285A (en) | 1969-03-05 |
US3843541A (en) | 1974-10-22 |
FR1511379A (fr) | 1968-01-26 |