Masaaki Tokunaga

Person

Fukaya, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Anisotropic magnetic powder and magnet thereof and method of produc...
- Patent number RE38042
- Issue date Mar 25, 2003
- Hitachi Metals, Ltd.
- Minoru Endoh
- 148 - Metal treatment
Information Patent Grant
Anisotropic magnetic powder and magnet thereof and method of produc...
- Patent number RE38021
- Issue date Mar 11, 2003
- Hitachi Metals, Ltd.
- Minoru Endoh
- 148 - Metal treatment
Information Patent Grant
Nd-Fe-B system permanent magnet
- Patent number 5,472,525
- Issue date Dec 5, 1995
- Hitachi Metals, Ltd.
- Masaaki Tokunaga
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Magnetically anisotropic R-T-B magnet
- Patent number 5,286,308
- Issue date Feb 15, 1994
- Hitachi Metals Ltd.
- Makoto Shinoda
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Permanent magnet with good thermal stability
- Patent number 5,230,751
- Issue date Jul 27, 1993
- Hitachi Metals, Ltd.
- Minoru Endoh
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Permanent magnet with good thermal stability
- Patent number 5,223,047
- Issue date Jun 29, 1993
- Hitachi Metals, Ltd.
- Minoru Endoh
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Magnetically anisotropic R-T-B magnet
- Patent number 5,162,063
- Issue date Nov 10, 1992
- Hitachi Metals Ltd.
- Makoto Shinoda
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Magnetically anisotropic hot-worked magnet and method of producing...
- Patent number 5,125,990
- Issue date Jun 30, 1992
- Hitachi Metals
- Katsunori Iwasaki
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Magnetically anisotropic hotworked magnet and method of producing same
- Patent number 5,098,486
- Issue date Mar 24, 1992
- Hitachi Metals, Ltd.
- Katsunori Iwasaki
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Anisotropic magnetic powder and magnet thereof and method of produc...
- Patent number 5,096,509
- Issue date Mar 17, 1992
- 501 Hitachi Metals, Ltd.
- Minoru Endoh
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Permanent magnet having good thermal stability and method for manuf...
- Patent number 5,041,172
- Issue date Aug 20, 1991
- Hitachi Metals, Ltd.
- Masaaki Tokunaga
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Magnetically anisotropic hotworked magnet and method of producing same
- Patent number 5,026,419
- Issue date Jun 25, 1991
- Hitachi Metals, Ltd.
- Katsunori Iwasaki
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Anisotropic magnetic powder and magnet thereof and method of produc...
- Patent number 4,983,232
- Issue date Jan 8, 1991
- Hitachi Metals, Ltd.
- Minoru Endoh
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Magnetically anisotropic hot-worked magnet and method of producing...
- Patent number 4,978,398
- Issue date Dec 18, 1990
- Hitachi Metals, Ltd.
- Katsunori Iwasaki
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Magnetically anisotropic hotworked magnet and method of producing same
- Patent number 4,952,251
- Issue date Aug 28, 1990
- Hitachi Metals, Ltd.
- Katsunori Iwasaki
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Process for manufacturing permanent magnet
- Patent number 4,888,068
- Issue date Dec 19, 1989
- Hitachi Metals, Ltd.
- Masaaki Tokunaga
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of producing neodymium-iron-boron permanent magnet
- Patent number 4,837,109
- Issue date Jun 6, 1989
- Hitachi Metals, Ltd.
- Masaaki Tokunaga
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Permanent magnet having good thermal stability and method for manuf...
- Patent number 4,814,139
- Issue date Mar 21, 1989
- Hitachi Metals, Ltd.
- Masaaki Tokunaga
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Rare earth metal-cobalt permanent magnet alloy
- Patent number 4,284,440
- Issue date Aug 18, 1981
- Hitachi Metals, Ltd.
- Masaaki Tokunaga
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Permanent magnet alloy
- Patent number 4,172,717
- Issue date Oct 30, 1979
- Hitachi Metals, Ltd.
- Masaaki Tokunaga
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

Masaaki Tokunaga

Person

Patents Grantslast 30 patents

Anisotropic magnetic powder and magnet thereof and method of produc...

Anisotropic magnetic powder and magnet thereof and method of produc...

Nd-Fe-B system permanent magnet

Magnetically anisotropic R-T-B magnet

Permanent magnet with good thermal stability

Permanent magnet with good thermal stability

Magnetically anisotropic R-T-B magnet

Magnetically anisotropic hot-worked magnet and method of producing...

Magnetically anisotropic hotworked magnet and method of producing same

Anisotropic magnetic powder and magnet thereof and method of produc...

Permanent magnet having good thermal stability and method for manuf...

Magnetically anisotropic hotworked magnet and method of producing same

Anisotropic magnetic powder and magnet thereof and method of produc...

Magnetically anisotropic hot-worked magnet and method of producing...

Magnetically anisotropic hotworked magnet and method of producing same

Process for manufacturing permanent magnet

Method of producing neodymium-iron-boron permanent magnet

Permanent magnet having good thermal stability and method for manuf...

Rare earth metal-cobalt permanent magnet alloy

Permanent magnet alloy