gamma - Fe2 O3

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CPC
G11B5/70652

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Parent Industries

GPHYSICS G11Information storage G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER G11B5/00Recording by magnetisation or demagnetisation of a record carrier Reproducing by magnetic means Record carriers therefor

Current Industry

G11B5/70652gamma - Fe2 O3

Industries

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Patents Grantslast 30 patents

Information Patent Grant
Ferrite thin film, method of manufacturing the same and electromagn...
- Patent number 7,648,774
- Issue date Jan 19, 2010
- NEC Tokin Corporation
- Koichi Kondo
- G11 - INFORMATION STORAGE
Information Patent Grant
Ferrite thin film, method of manufacturing the same and electromagn...
- Patent number 7,438,946
- Issue date Oct 21, 2008
- NEC Tokin Corporation
- Koichi Kondo
- G11 - INFORMATION STORAGE
Information Patent Grant
Ferrite thin film, method of manufacturing the same and electromagn...
- Patent number 7,160,636
- Issue date Jan 9, 2007
- NEC Tokin Corporation
- Koichi Kondo
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium
- Patent number 6,936,340
- Issue date Aug 30, 2005
- Imation Corp.
- Helmut Jakusch
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium
- Patent number 6,835,450
- Issue date Dec 28, 2004
- Imation Corp.
- Ronald John Veitch
- G11 - INFORMATION STORAGE
Information Patent Grant
Iron oxide magnetic powder and magnetic recording medium using the...
- Patent number 5,989,703
- Issue date Nov 23, 1999
- Sony Corporation
- Makoto Inoue
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Magnetic recording medium
- Patent number 5,895,708
- Issue date Apr 20, 1999
- Sony Corporation
- Kazuhiko Suzuki
- G11 - INFORMATION STORAGE
Information Patent Grant
High-purity ferromagnetic iron oxide pigments
- Patent number 5,769,937
- Issue date Jun 23, 1998
- BASF Aktiengesellschaft
- Claudius Kormann
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Process for making goethite
- Patent number 5,650,131
- Issue date Jul 22, 1997
- Minnesota Mining and Manufacturing Company
- Jean A. Lown
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for making goethite
- Patent number 5,641,470
- Issue date Jun 24, 1997
- Minnesota Mining and Manufacturing Company
- Albena Blagev
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Production method of goethite
- Patent number 5,139,767
- Issue date Aug 18, 1992
- Mitsui Toatsu Chemicals, Incorporated
- Mitsurou Matsunaga
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Highly-coercive isometric iron oxides, a process for the production...
- Patent number 5,002,751
- Issue date Mar 26, 1991
- Bayer Aktiengesellschaft
- Jurgen Wiese
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Spindle-like magnetic iron oxide particles and process for producin...
- Patent number 4,873,010
- Issue date Oct 10, 1989
- Toda Kogyo Corp.
- Atsushi Takedoi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium and method for producing the same
- Patent number 4,851,276
- Issue date Jul 25, 1989
- Hitachi Maxell, Ltd.
- Shinichi Kitahata
- G11 - INFORMATION STORAGE
Information Patent Grant
Longitudinal magnetic coated recording medium
- Patent number 4,822,634
- Issue date Apr 18, 1989
- Fujitsu Limited
- Jun Takahashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Preparation of facetted nodular particles
- Patent number 4,798,622
- Issue date Jan 17, 1989
- Eastman Kodak Company
- Bernard J. Pingaud
- G11 - INFORMATION STORAGE
Information Patent Grant
Cobalt-containing ferromagnetic iron oxide powder and process for p...
- Patent number 4,774,012
- Issue date Sep 27, 1988
- Ishihara Sangyo Kaisha, Ltd.
- Tatsuo Ishikawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Low temperature synthesis
- Patent number 4,751,070
- Issue date Jun 14, 1988
- Martin Marietta Corporation
- Vencatesh R. Pai Verneker
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Longitudinal magnetic coated recording medium
- Patent number 4,746,569
- Issue date May 24, 1988
- Fujitsu Limited
- Jun Takahashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium and magnetic particles therefor
- Patent number 4,693,931
- Issue date Sep 15, 1987
- Hitachi Maxell, Ltd.
- Haruo Andoh
- G11 - INFORMATION STORAGE
Information Patent Grant
Lamellar iron oxide pigments, a process for the production thereof...
- Patent number 4,676,838
- Issue date Jun 30, 1987
- Bayer Aktiengesellschaft
- Gerhard Franz
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Diskette having wear-resistant magnetizable layer
- Patent number 4,626,463
- Issue date Dec 2, 1986
- Minnesota Mining and Manufacturing Company
- Chiaki Fujishiro
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of producing hydrated iron oxide
- Patent number 4,597,958
- Issue date Jul 1, 1986
- Mitsui Mining & Smelting Co., Ltd.
- Nobuo Takagi
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Magnetic recording medium
- Patent number 4,585,697
- Issue date Apr 29, 1986
- Kabushiki Kaisha Toshiba
- Hirohisa Kato
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium
- Patent number 4,500,599
- Issue date Feb 19, 1985
- Fuji Photo Film Co., Ltd.
- Hiroshi Ogawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Manufacture of acicular ferrimagnetic iron oxide
- Patent number 4,464,352
- Issue date Aug 7, 1984
- BASF Aktiengesellschaft
- Horst Autzen
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method of preparing a magnetic pigment of .gamma.-Fe.sub.2 O.sub.3...
- Patent number 4,425,409
- Issue date Jan 10, 1984
- U.S. Philips Corporation
- Hendrikus F. Huisman
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method of preparing gamma ferric hydroxyoxide powder
- Patent number 4,396,596
- Issue date Aug 2, 1983
- Sony Corporation
- Kenji Ogisu
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for producing iron oxide containing magnetite
- Patent number 4,311,684
- Issue date Jan 19, 1982
- TDK Electronics Co., Ltd.
- Shinji Umeki
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Magnetic recording crystals, process for producing same, and magnet...
- Patent number 4,255,492
- Issue date Mar 10, 1981
- Eastman Kodak Company
- Roger G. L. Audran
- C01 - INORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
Ferrite thin film, method of manufacturing the same and electromagn...
- Publication number 20090061256
- Publication date Mar 5, 2009
- NEC Tokin Corporation
- Koichi Kondo
- G11 - INFORMATION STORAGE
Information Patent Application
Ferrite thin film, method of manufacturing the same and electromagn...
- Publication number 20070077369
- Publication date Apr 5, 2007
- NEC Tokin Corporation
- Koichi Kondo
- G11 - INFORMATION STORAGE
Information Patent Application
Ferrite thin film, method of manufacturing the same and electromagn...
- Publication number 20040157085
- Publication date Aug 12, 2004
- NEC Tokin Corporation
- Koichi Kondo
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic recording medium
- Publication number 20020012815
- Publication date Jan 31, 2002
- EMTEC MAGNETICS GmbH
- Ronald John Veitch
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic recording medium
- Publication number 20020009617
- Publication date Jan 24, 2002
- EMTEC MAGNETICS GmbH
- Helmut Jakusch
- G11 - INFORMATION STORAGE

gamma - Fe2 O3

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Ferrite thin film, method of manufacturing the same and electromagn...

Ferrite thin film, method of manufacturing the same and electromagn...

Ferrite thin film, method of manufacturing the same and electromagn...

Magnetic recording medium

Magnetic recording medium

Iron oxide magnetic powder and magnetic recording medium using the...

Magnetic recording medium

High-purity ferromagnetic iron oxide pigments

Process for making goethite

Process for making goethite

Production method of goethite

Highly-coercive isometric iron oxides, a process for the production...

Spindle-like magnetic iron oxide particles and process for producin...

Magnetic recording medium and method for producing the same

Longitudinal magnetic coated recording medium

Preparation of facetted nodular particles

Cobalt-containing ferromagnetic iron oxide powder and process for p...

Low temperature synthesis

Longitudinal magnetic coated recording medium

Magnetic recording medium and magnetic particles therefor

Lamellar iron oxide pigments, a process for the production thereof...

Diskette having wear-resistant magnetizable layer

Method of producing hydrated iron oxide

Magnetic recording medium

Magnetic recording medium

Manufacture of acicular ferrimagnetic iron oxide

Method of preparing a magnetic pigment of .gamma.-Fe.sub.2 O.sub.3...

Method of preparing gamma ferric hydroxyoxide powder

Process for producing iron oxide containing magnetite

Magnetic recording crystals, process for producing same, and magnet...

Patents Applicationslast 30 patents

Ferrite thin film, method of manufacturing the same and electromagn...

Ferrite thin film, method of manufacturing the same and electromagn...

Ferrite thin film, method of manufacturing the same and electromagn...

Magnetic recording medium

Magnetic recording medium