Masafumi Sakamoto

Person

Kiryu, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Permanent-magnet rotary electric machine
- Patent number 8,138,641
- Issue date Mar 20, 2012
- Nidec Servo Corporation
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Hybrid type rotary electric machine
- Patent number 7,939,976
- Issue date May 10, 2011
- Nidec Servo Corporation
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Manufacturing method of hybrid permanent magnet type electric rotat...
- Patent number 7,779,532
- Issue date Aug 24, 2010
- Nidec Servo Corporation
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Stepping motor
- Patent number 7,589,440
- Issue date Sep 15, 2009
- Nidec Servo Corporation
- Shoji Oiwa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Hybrid type double three-phase electric rotating machine
- Patent number 7,342,330
- Issue date Mar 11, 2008
- Japan Servo Co., LTD
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method of driving surveillance camera by using rotary electric machine
- Patent number 7,274,805
- Issue date Sep 25, 2007
- Japan Servo Co., LTD
- Noboru Horie
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Toroidal-coil linear stepping motor, toroidal-coil linear reciproca...
- Patent number 7,242,118
- Issue date Jul 10, 2007
- Japan Servo Co., LTD
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Permanent magnet type three-phase stepping motor
- Patent number 7,145,278
- Issue date Dec 5, 2006
- Japan Servo Co., Ltd.
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Permanent magnet type three-phase stepping motor
- Patent number 6,903,476
- Issue date Jun 7, 2005
- Japan Servo Co., Ltd.
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Multi-joint type industrial robot
- Patent number 6,781,337
- Issue date Aug 24, 2004
- Japan Servo Co., Ltd.
- Masafumi Sakamoto
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Permanent magnet type rotary machine
- Patent number 6,781,260
- Issue date Aug 24, 2004
- Japan Servo Co., Ltd.
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Three-phase toroidal coil type permanent magnet electric rotating m...
- Patent number 6,765,321
- Issue date Jul 20, 2004
- Japan Servo Co., LTD
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Magnet type stepping motor
- Patent number 6,741,006
- Issue date May 25, 2004
- Japan Servo Co., Ltd.
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Motor-driven system with stator provided with inductors
- Patent number 6,731,033
- Issue date May 4, 2004
- Japan Servo Co., LTD
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Three-phase hybrid type stepping motor
- Patent number 6,731,027
- Issue date May 4, 2004
- Japan Servo Co., Ltd.
- Kazuo Ohnishi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Permanent magnet type twelve-pole stepping motor
- Patent number 6,707,178
- Issue date Mar 16, 2004
- Japan Servo Co., LTD
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Magnet type stepping motor
- Patent number 6,670,732
- Issue date Dec 30, 2003
- Japan Servo Co.,Ltd.
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Three-phase permanent magnet cascade claw type stepping motor
- Patent number RE38346
- Issue date Dec 16, 2003
- Japan Servo Co., Ltd.
- Masafumi Sakamoto
- 310 - Electrical generator or motor structure
Information Patent Grant
Permanent magnet motor
- Patent number 6,633,105
- Issue date Oct 14, 2003
- Japan Servo Co., Ltd.
- Kazuo Ohnishi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Two-phase hybrid type stepping motor
- Patent number 6,548,923
- Issue date Apr 15, 2003
- Japan Servo Co., Ltd.
- Kazuo Ohnishi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Three-phase hybrid type stepping motor
- Patent number 6,545,376
- Issue date Apr 8, 2003
- Japan Servo Co., Ltd.
- Kazuo Ohnishi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Multi-phase electric rotating machine having toroidal coils and usi...
- Patent number 6,504,272
- Issue date Jan 7, 2003
- Japan Servo Co., LTD
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Rotary electric machine having coaxial output hollow shaft with red...
- Patent number 6,477,918
- Issue date Nov 12, 2002
- Japan Servo Co., LTD
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Composite type three phase stepping motor
- Patent number 6,359,349
- Issue date Mar 19, 2002
- Japan Servo Co., Ltd.
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Hybrid stepping motor
- Patent number 6,329,729
- Issue date Dec 11, 2001
- Japan Servo Co. Ltd.
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method of driving directly a rotary drum in a reproducing machine b...
- Patent number 6,320,347
- Issue date Nov 20, 2001
- Japan Servo Co., Ltd.
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Stepping motor
- Patent number 6,281,615
- Issue date Aug 28, 2001
- Japan Servo Co., Ltd.
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Stepping motor and having external rotor and electromagnetic-combin...
- Patent number 6,225,773
- Issue date May 1, 2001
- Japan Servo Company Ltd.
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Two-phase permanent-magnet electric rotating machine
- Patent number 6,172,438
- Issue date Jan 9, 2001
- Japan Servo Company, Ltd.
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Three-phase stepping motor and driving method therefor
- Patent number 6,160,330
- Issue date Dec 12, 2000
- Japan Servo Co., Ltd.
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
PERMANENT-MAGNET ROTARY ELECTRIC MACHINE
- Publication number 20100133929
- Publication date Jun 3, 2010
- NIDEC SERVO CORPORATION
- Masafumi SAKAMOTO
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Application
HYBRID TYPE ROTARY ELECTRIC MACHINE
- Publication number 20100066184
- Publication date Mar 18, 2010
- NIDEC SERVO CORPORATION
- Masafumi SAKAMOTO
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
HYBRID PERMANENT MAGNET TYPE ELECTRIC ROTATING MACHINE AND MANUFACT...
- Publication number 20070200464
- Publication date Aug 30, 2007
- JAPAN SERVO CO., LTD.
- Masafumi Sakamoto
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Application
STEPPING MOTOR
- Publication number 20070120426
- Publication date May 31, 2007
- JAPAN SERVO CO., LTD.
- Shoji Oiwa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Hybrid type double three-phase electric rotating machine
- Publication number 20060071562
- Publication date Apr 6, 2006
- JAPAN SERVO CO., LTD.
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Permanent magnet type three-phase stepping motor
- Publication number 20050194846
- Publication date Sep 8, 2005
- Japan Servo Co., Ltd.
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Toroidal-coil linear stepping motor, toroidal-coil linear reciproca...
- Publication number 20050023905
- Publication date Feb 3, 2005
- JAPAN SERVO CO., LTD.
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Method of surveillance camera by using rotary electric machine
- Publication number 20040041909
- Publication date Mar 4, 2004
- JAPAN SERVO CO., LTD.
- Noboru Horie
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Permanent magnet type rotary machine
- Publication number 20030102727
- Publication date Jun 5, 2003
- Japan Servo Co., Ltd.
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Multi-joint type industrial robot
- Publication number 20030085681
- Publication date May 8, 2003
- Masafumi Sakamoto
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Application
Three-phase hybrid type stepping motor
- Publication number 20030062779
- Publication date Apr 3, 2003
- Japan Servo Co., Ltd.
- Kazuo Ohnishi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Permanent magnet type three-phase stepping motor
- Publication number 20030052552
- Publication date Mar 20, 2003
- Japan Servo Co. Ltd.
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Three-phase toroidal coil type permanent magnet electric rotating m...
- Publication number 20020190585
- Publication date Dec 19, 2002
- JAPAN SERVO CO., LTD.
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Permanent magnet motor
- Publication number 20020175581
- Publication date Nov 28, 2002
- Japan Servo Co., Ltd.
- Kazuo Ohnishi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Magnet type stepping motor
- Publication number 20020158521
- Publication date Oct 31, 2002
- Japan Servo Co., Ltd.
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Permanent magnet type twelve-pole stepping motor
- Publication number 20020079750
- Publication date Jun 27, 2002
- JAPAN SERVO CO., LTD.
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Three-phase hybrid type stepping motor
- Publication number 20020079749
- Publication date Jun 27, 2002
- Japan Servo Co. Ltd.
- Kazuo Ohnishi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Motor-driven system with stator provided with inductors
- Publication number 20020024267
- Publication date Feb 28, 2002
- JAPAN SERVO CO., LTD.
- Masafumi Sakamoto
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
Rotary electric machine having coaxial output hollow shaft with red...
- Publication number 20010052735
- Publication date Dec 20, 2001
- JAPAN SERVO CO., LTD.
- Masafumi Sakamoto
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Two-phase hybrid type stepping motor
- Publication number 20010038249
- Publication date Nov 8, 2001
- Japan Servo Co., Ltd.
- Kazuo Ohnishi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Magnet type stepping motor
- Publication number 20010017493
- Publication date Aug 30, 2001
- Japan Servo Co., Ltd.
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Multi-phase electric rotating machine having toroidal coils and usi...
- Publication number 20010002095
- Publication date May 31, 2001
- Masafumi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Masafumi Sakamoto

Person

Patents Grantslast 30 patents

Permanent-magnet rotary electric machine

Hybrid type rotary electric machine

Manufacturing method of hybrid permanent magnet type electric rotat...

Stepping motor

Hybrid type double three-phase electric rotating machine

Method of driving surveillance camera by using rotary electric machine

Toroidal-coil linear stepping motor, toroidal-coil linear reciproca...

Permanent magnet type three-phase stepping motor

Permanent magnet type three-phase stepping motor

Multi-joint type industrial robot

Permanent magnet type rotary machine

Three-phase toroidal coil type permanent magnet electric rotating m...

Magnet type stepping motor

Motor-driven system with stator provided with inductors

Three-phase hybrid type stepping motor

Permanent magnet type twelve-pole stepping motor

Magnet type stepping motor

Three-phase permanent magnet cascade claw type stepping motor

Permanent magnet motor

Two-phase hybrid type stepping motor

Three-phase hybrid type stepping motor

Multi-phase electric rotating machine having toroidal coils and usi...

Rotary electric machine having coaxial output hollow shaft with red...

Composite type three phase stepping motor

Hybrid stepping motor

Method of driving directly a rotary drum in a reproducing machine b...

Stepping motor

Stepping motor and having external rotor and electromagnetic-combin...

Two-phase permanent-magnet electric rotating machine

Three-phase stepping motor and driving method therefor

Patents Applicationslast 30 patents

PERMANENT-MAGNET ROTARY ELECTRIC MACHINE

HYBRID TYPE ROTARY ELECTRIC MACHINE

HYBRID PERMANENT MAGNET TYPE ELECTRIC ROTATING MACHINE AND MANUFACT...

STEPPING MOTOR

Hybrid type double three-phase electric rotating machine

Permanent magnet type three-phase stepping motor

Toroidal-coil linear stepping motor, toroidal-coil linear reciproca...

Method of surveillance camera by using rotary electric machine

Permanent magnet type rotary machine

Multi-joint type industrial robot

Three-phase hybrid type stepping motor

Permanent magnet type three-phase stepping motor

Three-phase toroidal coil type permanent magnet electric rotating m...

Permanent magnet motor

Magnet type stepping motor

Permanent magnet type twelve-pole stepping motor

Three-phase hybrid type stepping motor

Motor-driven system with stator provided with inductors

Rotary electric machine having coaxial output hollow shaft with red...

Two-phase hybrid type stepping motor

Magnet type stepping motor

Multi-phase electric rotating machine having toroidal coils and usi...