Masaaki Maekawa

Person

Hiroshima-ken, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Magnetic metal particles containing iron as main component, process...
- Patent number 7,172,642
- Issue date Feb 6, 2007
- Toda Kogyo Corporation
- Akinori Yamamoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording medium
- Patent number 6,916,530
- Issue date Jul 12, 2005
- Toda Kogyo Corporation
- Jun Koujima
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium and process for producing the same
- Patent number 6,821,618
- Issue date Nov 23, 2004
- Toda Kogyo Corporation
- Jun Koujima
- G11 - INFORMATION STORAGE
Information Patent Grant
Spindle-shaped magnetic alloy particles for magnetic recording, and...
- Patent number 6,753,084
- Issue date Jun 22, 2004
- Toda Kogyo Corporation
- Masaaki Maekawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Spindle-shaped hematite particles and process for making spindle-sh...
- Patent number 6,398,863
- Issue date Jun 4, 2002
- Toda Kogyo Corporation
- Kenji Okinaka
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Spindle-shaped goethite particles, spindle-shaped hematite particle...
- Patent number 6,309,479
- Issue date Oct 30, 2001
- Toda Kogyo Corporation
- Kenji Okinaka
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Non-magnetic coated particles having a defined parameter .alpha. of...
- Patent number 5,882,795
- Issue date Mar 16, 1999
- Toda Kogyo Corporation
- Kazuyuki Hayashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Non-magnetic undercoating layer for magnetic recording medium, magn...
- Patent number 5,830,557
- Issue date Nov 3, 1998
- Toda Kogyo Corporation
- Kazuyuki Hayashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Non-magnetic undercoat layer for magnetic recording medium, magneti...
- Patent number 5,604,015
- Issue date Feb 18, 1997
- Toda Kogyo Corporation
- Kazuyuki Hayashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Plate-like composite ferrite fine particles for magnetic recording...
- Patent number 5,118,575
- Issue date Jun 2, 1992
- Toda Kogyo Corp.
- Masaaki Maekawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Plate-like composite ferrite fine particles suitable for use in mag...
- Patent number 5,079,092
- Issue date Jan 7, 1992
- Toda Kogyo Corp.
- Masaaki Maekawa
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Perpendicular magnetic recording medium
- Publication number 20030143434
- Publication date Jul 31, 2003
- Jun Koujima
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic metal particles containing iron as main component, process...
- Publication number 20030136473
- Publication date Jul 24, 2003
- Akinori Yamamoto
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic recording medium and process for producing the same
- Publication number 20030008176
- Publication date Jan 9, 2003
- Jun Koujima
- G11 - INFORMATION STORAGE
Information Patent Application
Spindle-shaped magnetic alloy particles for magnetic recording, and...
- Publication number 20020155323
- Publication date Oct 24, 2002
- Masaaki Maekawa
- G11 - INFORMATION STORAGE
Information Patent Application
Spindle-shaped goethite particles and process for making spindle-sh...
- Publication number 20020153065
- Publication date Oct 24, 2002
- Toda Kogyo Corporation
- Kenji Okinaka
- B82 - NANO-TECHNOLOGY
Information Patent Application
Spindle-shaped hematite particles and process for making spindle-sh...
- Publication number 20020033118
- Publication date Mar 21, 2002
- Toda Kogyo Corporation
- Kenji Okinaka
- B82 - NANO-TECHNOLOGY

Masaaki Maekawa

Person

Patents Grantslast 30 patents

Magnetic metal particles containing iron as main component, process...

Perpendicular magnetic recording medium

Magnetic recording medium and process for producing the same

Spindle-shaped magnetic alloy particles for magnetic recording, and...

Spindle-shaped hematite particles and process for making spindle-sh...

Spindle-shaped goethite particles, spindle-shaped hematite particle...

Non-magnetic coated particles having a defined parameter .alpha. of...

Non-magnetic undercoating layer for magnetic recording medium, magn...

Non-magnetic undercoat layer for magnetic recording medium, magneti...

Plate-like composite ferrite fine particles for magnetic recording...

Plate-like composite ferrite fine particles suitable for use in mag...

Patents Applicationslast 30 patents

Perpendicular magnetic recording medium

Magnetic metal particles containing iron as main component, process...

Magnetic recording medium and process for producing the same

Spindle-shaped magnetic alloy particles for magnetic recording, and...

Spindle-shaped goethite particles and process for making spindle-sh...

Spindle-shaped hematite particles and process for making spindle-sh...