Hiroyuki Tomizawa

Person

Ibaraki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
R-T-Cu-Mn-B type sintered magnet
- Patent number 8,092,619
- Issue date Jan 10, 2012
- Hitachi Metals, Ltd.
- Futoshi Kuniyoshi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Rare earth element-iron-boron alloy, and magnetically anisotropic p...
- Patent number 7,892,365
- Issue date Feb 22, 2011
- Hitachi Metals, Ltd.
- Hiroyuki Tomizawa
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Rare earth magnet and method for production thereof
- Patent number 7,867,343
- Issue date Jan 11, 2011
- Hitachi Metals, Ltd.
- Hiroyuki Tomizawa
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
R-T-B based sintered magnet
- Patent number 7,789,933
- Issue date Sep 7, 2010
- Hitachi Metals, Ltd.
- Hiroyuki Tomizawa
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
R-T-B based sintered magnet
- Patent number 7,740,715
- Issue date Jun 22, 2010
- Hitachi Metals, Ltd.
- Hiroyuki Tomizawa
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Magnetic alloy material and method of making the magnetic alloy mat...
- Patent number 7,578,892
- Issue date Aug 25, 2009
- Hitachi Metals, Ltd.
- Satoshi Hirosawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Rare earth element-iron-boron alloy and magnetically anisotropic pe...
- Patent number 7,550,047
- Issue date Jun 23, 2009
- Hitachi Metals, Ltd.
- Hiroyuki Tomizawa
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
R-t-b sintered magnet and rare earth alloy
- Patent number 7,534,311
- Issue date May 19, 2009
- Hitachi Metals, Ltd.
- Hiroyuki Tomizawa
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
R-T-B-C based rare-earth magnetic powder and bonded magnet
- Patent number 7,316,752
- Issue date Jan 8, 2008
- Neomax Co., Ltd.
- Hiroyuki Tomizawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Rare earth magnet and method for production thereof
- Patent number 7,258,751
- Issue date Aug 21, 2007
- Neomax Co., Ltd.
- Hiroyuki Tomizawa
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method for producing quenched R-T-B—C alloy magnet
- Patent number 7,172,659
- Issue date Feb 6, 2007
- Neomax Co., Ltd.
- Hiroyuki Tomizawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Magnetic alloy powder for permanent magnet and method for producing...
- Patent number 6,818,041
- Issue date Nov 16, 2004
- Neomax Co., Ltd.
- Hiroyuki Tomizawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Permanent magnet
- Patent number 5,200,001
- Issue date Apr 6, 1993
- Sumitomo Special Metals Co., Ltd.
- Satoshi Hirosawa
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

Patents Applicationslast 30 patents

Information Patent Application
R-T-Cu-Mn-B TYPE SINTERED MAGNET
- Publication number 20110095855
- Publication date Apr 28, 2011
- Hitachi Metals, Ltd
- Futoshi Kuniyoshi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
R-T-B BASED SINTERED MAGNET
- Publication number 20100008814
- Publication date Jan 14, 2010
- Hitachi Metals, Ltd.
- Hiroyuki TOMIZAWA
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
R-T-B BASED SINTERED MAGNET
- Publication number 20100003160
- Publication date Jan 7, 2010
- Hitachi Metals, Ltd.
- Hiroyuki TOMIZAWA
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
R-T-B BASED SINTERED MAGNET
- Publication number 20080274009
- Publication date Nov 6, 2008
- Hitachi Metals, Ltd.
- Hiroyuki TOMIZAWA
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
R-T-B BASED SINTERED MAGNET
- Publication number 20080271821
- Publication date Nov 6, 2008
- Hitachi Metals, Ltd.
- Hiroyuki TOMIZAWA
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
RARE EARTH ELEMENT-IRON-BORON ALLOY, AND MAGNETICALLY ANISOTROPIC P...
- Publication number 20080113210
- Publication date May 15, 2008
- NEOMAX Co., Ltd.
- Hiroyuki TOMIZAWA
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Rare earth magnet and method for production thereof
- Publication number 20070261766
- Publication date Nov 15, 2007
- Hiroyuki Tomizawa
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
MAGNETIC ALLOY MATERIAL AND METHOD OF MAKING THE MAGNETIC ALLOY MAT...
- Publication number 20060231163
- Publication date Oct 19, 2006
- Satoshi HIROSAWA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
R-t-b sintered magnet and rare earth alloy
- Publication number 20060201585
- Publication date Sep 14, 2006
- Hiroyuki Tomizawa
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Sinter magnet made from rare earth-iron-boron alloy powder for magnet
- Publication number 20060016515
- Publication date Jan 26, 2006
- Hiroyuki Tomizawa
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
R-t-b sintered magnet and process for producing the same
- Publication number 20050268989
- Publication date Dec 8, 2005
- Hiroyuki Tomizawa
- C21 - METALLURGY OF IRON
Information Patent Application
Rare earth element-iron-boron alloy and megnetically anisotropic pe...
- Publication number 20050016632
- Publication date Jan 27, 2005
- Hiroyuki Tomizawa
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
R T B C based rare earth magnetic powder and bonded magnet
- Publication number 20040168747
- Publication date Sep 2, 2004
- Hiroyuki Tomizawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Method for producing quenched r-t-b-c alloy magnet
- Publication number 20040168746
- Publication date Sep 2, 2004
- Hiroyuki Tomizawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Rare earth magnet and method for production thereof
- Publication number 20040163737
- Publication date Aug 26, 2004
- Hiroyuki Tomizawa
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Magnetic alloy powder for permanent magnet and method for producing...
- Publication number 20020112783
- Publication date Aug 22, 2002
- Sumitomo Special Metals Co., Ltd.
- Hiroyuki Tomizawa
- H01 - BASIC ELECTRIC ELEMENTS

Hiroyuki Tomizawa

Person

Patents Grantslast 30 patents

R-T-Cu-Mn-B type sintered magnet

Rare earth element-iron-boron alloy, and magnetically anisotropic p...

Rare earth magnet and method for production thereof

R-T-B based sintered magnet

R-T-B based sintered magnet

Magnetic alloy material and method of making the magnetic alloy mat...

Rare earth element-iron-boron alloy and magnetically anisotropic pe...

R-t-b sintered magnet and rare earth alloy

R-T-B-C based rare-earth magnetic powder and bonded magnet

Rare earth magnet and method for production thereof

Method for producing quenched R-T-B—C alloy magnet

Magnetic alloy powder for permanent magnet and method for producing...

Permanent magnet

Patents Applicationslast 30 patents

R-T-Cu-Mn-B TYPE SINTERED MAGNET

R-T-B BASED SINTERED MAGNET

R-T-B BASED SINTERED MAGNET

R-T-B BASED SINTERED MAGNET

R-T-B BASED SINTERED MAGNET

RARE EARTH ELEMENT-IRON-BORON ALLOY, AND MAGNETICALLY ANISOTROPIC P...

Rare earth magnet and method for production thereof

MAGNETIC ALLOY MATERIAL AND METHOD OF MAKING THE MAGNETIC ALLOY MAT...

R-t-b sintered magnet and rare earth alloy

Sinter magnet made from rare earth-iron-boron alloy powder for magnet

R-t-b sintered magnet and process for producing the same

Rare earth element-iron-boron alloy and megnetically anisotropic pe...

R T B C based rare earth magnetic powder and bonded magnet

Method for producing quenched r-t-b-c alloy magnet

Rare earth magnet and method for production thereof

Magnetic alloy powder for permanent magnet and method for producing...