Koichi Hirota

Person

Echizen-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Method for producing magnetic refrigeration material, and magnetic...
- Patent number 12,172,211
- Issue date Dec 24, 2024
- Shin-Etsu Chemical Co., Ltd.
- Junya Fukuda
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Method for producing magnetic refrigeration material, and magnetic...
- Patent number 11,806,782
- Issue date Nov 7, 2023
- Shin-Etsu Chemical Co., Ltd.
- Junya Fukuda
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Rare earth sintered magnet
- Patent number 11,798,716
- Issue date Oct 24, 2023
- Shin-Etsu Chemical Co., Ltd.
- Tetsuya Ohashi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
R—Fe—B sintered magnet and production method therefor
- Patent number 11,600,413
- Issue date Mar 7, 2023
- Shin-Etsu Chemical Co., Ltd.
- Tetsuya Ohashi
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
R-Fe-B sintered magnet
- Patent number 11,410,805
- Issue date Aug 9, 2022
- Shin-Etsu Chemical Co., Ltd.
- Tetsuya Ohashi
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
R-Fe-B sintered magnet and making method
- Patent number 11,315,710
- Issue date Apr 26, 2022
- Shin-Etsu Chemical Co., Ltd.
- Koichi Hirota
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Method for preparing R—Fe—B sintered magnet
- Patent number 10,937,578
- Issue date Mar 2, 2021
- Shin-Etsu Chemical Co., Ltd.
- Tetsuya Ohashi
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
R-Fe-B sintered magnet
- Patent number 10,720,271
- Issue date Jul 21, 2020
- Shin-Etsu Chemical Co., Ltd.
- Tetsuya Ohashi
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
R-(Fe, Co)-B sintered magnet and making method
- Patent number 10,573,438
- Issue date Feb 25, 2020
- Shin-Etsu Chemical Co., Ltd.
- Koichi Hirota
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
R-Fe-B sintered magnet and making method
- Patent number 10,515,747
- Issue date Dec 24, 2019
- Shin-Etsu Chemical Co., Ltd.
- Koichi Hirota
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
R—Fe—B sintered magnet and making method
- Patent number 10,410,775
- Issue date Sep 10, 2019
- Shin-Etsu Chemical Co., Ltd.
- Koichi Hirota
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Rare earth sintered magnet and making method
- Patent number 10,074,477
- Issue date Sep 11, 2018
- Shin-Etsu Chemical Co., Ltd.
- Hiroaki Nagata
- C21 - METALLURGY OF IRON
Information Patent Grant
Nd based sintered magnet
- Patent number 9,953,750
- Issue date Apr 24, 2018
- Shin-Etsu Chemical Co., Ltd.
- Koji Miyata
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
R-Fe—B sintered magnet and making method
- Patent number 9,892,831
- Issue date Feb 13, 2018
- Shin-Etsu Chemical Co., Ltd.
- Koichi Hirota
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method for assembling rotor for use in IPM rotary machine
- Patent number 9,742,248
- Issue date Aug 22, 2017
- Shin-Etsu Chemical Co., Ltd.
- Yuhito Doi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Rotor for axial gap-type permanent magnetic rotating machine
- Patent number 8,823,235
- Issue date Sep 2, 2014
- Shin-Etsu Chemical Co., Ltd.
- Naoki Watanabe
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method for assembling rotor for use in IPM rotary machine
- Patent number 8,756,793
- Issue date Jun 24, 2014
- Shin-Etsu Chemical Co., Ltd.
- Yuhito Doi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method of manufacturing an Nd based sintered magnet
- Patent number 8,695,210
- Issue date Apr 15, 2014
- Shin-Etsu Chemical Co., Ltd.
- Koji Miyata
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Rotor for permanent magnet rotating machine
- Patent number 8,638,017
- Issue date Jan 28, 2014
- Shin-Etsu Chemical Co., Ltd.
- Koji Miyata
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method for preparing rare earth permanent magnet material
- Patent number 8,420,010
- Issue date Apr 16, 2013
- Shin-Etsu Chemical Co., Ltd.
- Hajime Nakamura
- C21 - METALLURGY OF IRON
Information Patent Grant
Preparation of rare earth permanent magnet material
- Patent number 8,377,233
- Issue date Feb 19, 2013
- Shin-Etsu Chemical Co., Ltd.
- Hajime Nakamura
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Rotor for permanent magnet rotary machine
- Patent number 8,269,392
- Issue date Sep 18, 2012
- Shin-Etsu Chemical Co., Ltd.
- Yuhito Doi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method for preparing rare earth permanent magnet material
- Patent number 8,231,740
- Issue date Jul 31, 2012
- Shin-Etsu Chemical Co., Ltd.
- Hajime Nakamura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Preparation of rare earth permanent magnet material
- Patent number 8,211,327
- Issue date Jul 3, 2012
- Shin-Etsu Chemical Co., Ltd.
- Hajime Nakamura
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Method for preparing rare earth permanent magnet material
- Patent number 8,075,707
- Issue date Dec 13, 2011
- Shin-Etsu Chemical Co., Ltd.
- Hajime Nakamura
- C21 - METALLURGY OF IRON
Information Patent Grant
Nd-Fe-B rare earth permanent magnet material
- Patent number 8,012,269
- Issue date Sep 6, 2011
- Shin-Etsu Chemical Co., Ltd.
- Kenji Yamamoto
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
R-T-B—C rare earth sintered magnet and making method
- Patent number 7,988,795
- Issue date Aug 2, 2011
- Shin-Etsu Chemical Co., Ltd.
- Koichi Hirota
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method for preparing rare earth permanent magnet material
- Patent number 7,955,443
- Issue date Jun 7, 2011
- Shin-Etsu Chemical Co., Ltd.
- Hajime Nakamura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method for preparing rare earth permanent magnet
- Patent number 7,883,587
- Issue date Feb 8, 2011
- Shin-Etsu Chemical Co., Ltd.
- Hajime Nakamura
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Rare earth permanent magnet, making method, and permanent magnet ro...
- Patent number 7,559,996
- Issue date Jul 14, 2009
- Shin-Etsu Chemical Co., Ltd.
- Koji Miyata
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

Patents Applicationslast 30 patents

Information Patent Application
SINTERED RARE-EARTH MAGNET AND METHOD OF MANUFACTURE
- Publication number 20240355513
- Publication date Oct 24, 2024
- Shin-Etsu Chemical Co., Ltd.
- Koichi HIROTA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
R-T-B SINTERED MAGNET
- Publication number 20240161952
- Publication date May 16, 2024
- SHIN-ETSU CHEMICAL CO., LTD.,
- Akihiro Yoshinari
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
METHOD FOR PRODUCING MAGNETIC REFRIGERATION MATERIAL, AND MAGNETIC...
- Publication number 20230405670
- Publication date Dec 21, 2023
- Shin-Etsu Chemical Co., Ltd.
- Junya FUKUDA
- B22 - CASTING POWDER METALLURGY
Information Patent Application
RECYCLING METHOD FOR HEAVY RARE EARTH ELEMENT AND RECYCLING METHOD...
- Publication number 20230399721
- Publication date Dec 14, 2023
- Shin-Etsu Chemical Co., Ltd.
- Koichi HIROTA
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Application
SINTERED RARE-EARTH MAGNET AND METHOD OF MANUFACTURE
- Publication number 20230352220
- Publication date Nov 2, 2023
- Shin-Etsu Chemical Co., Ltd.
- Hiroshi BABA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
VEHICLE SEAT
- Publication number 20230311925
- Publication date Oct 5, 2023
- BARU CORPORATION
- Takanori TATEBE
- B60 - VEHICLES IN GENERAL
Information Patent Application
METHOD FOR PRODUCING MAGNETIC REFRIGERATION MATERIAL, AND MAGNETIC...
- Publication number 20230302532
- Publication date Sep 28, 2023
- Shin-Etsu Chemical Co., Ltd.
- Junya FUKUDA
- B22 - CASTING POWDER METALLURGY
Information Patent Application
RARE EARTH SINTERED MAGNET
- Publication number 20220415551
- Publication date Dec 29, 2022
- Shin-Etsu Chemical Co., Ltd.
- Tetsuya KUME
- B22 - CASTING POWDER METALLURGY
Information Patent Application
R-FE-B-BASED SINTERED MAGNET
- Publication number 20220406498
- Publication date Dec 22, 2022
- Shin-Etsu Chemical Co., Ltd.
- Akihiro Yoshinari
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
RARE EARTH SINTERED MAGNET AND MAKING METHOD
- Publication number 20220384072
- Publication date Dec 1, 2022
- Shin-Etsu Chemical Co., Ltd.
- Akihiro YOSHINARI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
METHOD FOR MANUFACTURING RARE EARTH MAGNET
- Publication number 20220344080
- Publication date Oct 27, 2022
- Shin-Etsu Chemical Co., Ltd.
- Hajime NAKAMURA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Method for Manufacturing Rare Earth Sintered Magnet
- Publication number 20220148801
- Publication date May 12, 2022
- Shin-Etsu Chemical Co., Ltd.
- Akira YAMADA
- B22 - CASTING POWDER METALLURGY
Information Patent Application
RARE EARTH SINTERED MAGNET AND MAKING METHOD
- Publication number 20210366635
- Publication date Nov 25, 2021
- Shin-Etsu Chemical Co., Ltd.
- Yosuke SHINADA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
R-Fe-B SINTERED MAGNET
- Publication number 20200303103
- Publication date Sep 24, 2020
- Shin-Etsu Chemical Co., Ltd.
- Tetsuya Ohashi
- B22 - CASTING POWDER METALLURGY
Information Patent Application
RARE EARTH SINTERED MAGNET
- Publication number 20200111591
- Publication date Apr 9, 2020
- Shin-Etsu Chemical Co., Ltd.
- Tetsuya Ohashi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
R-FE-B SINTERED MAGNET AND PRODUCTION METHOD THEREFOR
- Publication number 20200082962
- Publication date Mar 12, 2020
- Shin-Etsu Chemical Co., Ltd.
- Tetsuya Ohashi
- B22 - CASTING POWDER METALLURGY
Information Patent Application
R-Fe-B SINTERED MAGNET
- Publication number 20180090250
- Publication date Mar 29, 2018
- Shin-Etsu Chemical Co., Ltd.
- Tetsuya Ohashi
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
METHOD FOR PREPARING R-Fe-B SINTERED MAGNET
- Publication number 20180090249
- Publication date Mar 29, 2018
- Shin-Etsu Chemical Co., Ltd.
- Tetsuya Ohashi
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
R-Fe-B SINTERED MAGNET AND MAKING METHOD
- Publication number 20170365384
- Publication date Dec 21, 2017
- Shin-Etsu Chemical Co., Ltd.
- Koichi Hirota
- C21 - METALLURGY OF IRON
Information Patent Application
R-(Fe, Co)-B Sintered Magnet and Making Method
- Publication number 20170140856
- Publication date May 18, 2017
- Shin-Etsu Chemical Co., Ltd.
- Koichi Hirota
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
RARE EARTH SINTERED MAGNET AND MAKING METHOD
- Publication number 20170098503
- Publication date Apr 6, 2017
- Shin-Etsu Chemical Co., Ltd.
- Hiroaki Nagata
- C21 - METALLURGY OF IRON
Information Patent Application
R-FE-B SINTERED MAGNET AND MAKING METHOD
- Publication number 20160293303
- Publication date Oct 6, 2016
- Shin-Etsu Chemical Co., Ltd.
- Koichi Hirota
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
R-FE-B SINTERED MAGNET AND MAKING METHOD
- Publication number 20160293307
- Publication date Oct 6, 2016
- Shin-Etsu Chemical Co., Ltd.
- Koichi Hirota
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
R-FE-B SINTERED MAGNET AND MAKING METHOD
- Publication number 20160293304
- Publication date Oct 6, 2016
- Shin-Etsu Chemical Co., Ltd.
- Koichi Hirota
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
METHOD FOR ASSEMBLING ROTOR FOR USE IN IPM ROTARY MACHINE
- Publication number 20140245597
- Publication date Sep 4, 2014
- Shin-Etsu Chemical Co., Ltd.
- Yuhito Doi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
METHOD OF MANUFACTURING AN Nd BASED SINTERED MAGNET
- Publication number 20140167895
- Publication date Jun 19, 2014
- Shin-Etsu Chemical Co., Ltd.
- Koji Miyata
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
RARE EARTH SINTERED MAGNET AND MAKING METHOD
- Publication number 20130271248
- Publication date Oct 17, 2013
- Shin-Etsu Chemical Co., Ltd.
- Hiroaki Nagata
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
ND BASED SINTERED MAGNET AND ITS PREPARATION
- Publication number 20110210810
- Publication date Sep 1, 2011
- Shin-Etsu Chemical Co., Ltd.
- Koji Miyata
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
PREPARATION OF RARE EARTH PERMANENT MAGNET MATERIAL
- Publication number 20110150691
- Publication date Jun 23, 2011
- Shin-Etsu Chemical Co., Ltd.
- Hajime Nakamura
- B22 - CASTING POWDER METALLURGY
Information Patent Application
ROTOR FOR PERMANENT MAGNET ROTARY MACHINE
- Publication number 20110080066
- Publication date Apr 7, 2011
- Shin-Etsu Chemical Co., Ltd.
- Yuhito Doi
- H01 - BASIC ELECTRIC ELEMENTS

Koichi Hirota

Person

Patents Grantslast 30 patents

Method for producing magnetic refrigeration material, and magnetic...

Method for producing magnetic refrigeration material, and magnetic...

Rare earth sintered magnet

R—Fe—B sintered magnet and production method therefor

R-Fe-B sintered magnet

R-Fe-B sintered magnet and making method

Method for preparing R—Fe—B sintered magnet

R-Fe-B sintered magnet

R-(Fe, Co)-B sintered magnet and making method

R-Fe-B sintered magnet and making method

R—Fe—B sintered magnet and making method

Rare earth sintered magnet and making method

Nd based sintered magnet

R-Fe—B sintered magnet and making method

Method for assembling rotor for use in IPM rotary machine

Rotor for axial gap-type permanent magnetic rotating machine

Method for assembling rotor for use in IPM rotary machine

Method of manufacturing an Nd based sintered magnet

Rotor for permanent magnet rotating machine

Method for preparing rare earth permanent magnet material

Preparation of rare earth permanent magnet material

Rotor for permanent magnet rotary machine

Method for preparing rare earth permanent magnet material

Preparation of rare earth permanent magnet material

Method for preparing rare earth permanent magnet material

Nd-Fe-B rare earth permanent magnet material

R-T-B—C rare earth sintered magnet and making method

Method for preparing rare earth permanent magnet material

Method for preparing rare earth permanent magnet

Rare earth permanent magnet, making method, and permanent magnet ro...

Patents Applicationslast 30 patents

SINTERED RARE-EARTH MAGNET AND METHOD OF MANUFACTURE

R-T-B SINTERED MAGNET

METHOD FOR PRODUCING MAGNETIC REFRIGERATION MATERIAL, AND MAGNETIC...

RECYCLING METHOD FOR HEAVY RARE EARTH ELEMENT AND RECYCLING METHOD...

SINTERED RARE-EARTH MAGNET AND METHOD OF MANUFACTURE

VEHICLE SEAT

METHOD FOR PRODUCING MAGNETIC REFRIGERATION MATERIAL, AND MAGNETIC...

RARE EARTH SINTERED MAGNET

R-FE-B-BASED SINTERED MAGNET

RARE EARTH SINTERED MAGNET AND MAKING METHOD

METHOD FOR MANUFACTURING RARE EARTH MAGNET

Method for Manufacturing Rare Earth Sintered Magnet

RARE EARTH SINTERED MAGNET AND MAKING METHOD

R-Fe-B SINTERED MAGNET

RARE EARTH SINTERED MAGNET

R-FE-B SINTERED MAGNET AND PRODUCTION METHOD THEREFOR

R-Fe-B SINTERED MAGNET

METHOD FOR PREPARING R-Fe-B SINTERED MAGNET

R-Fe-B SINTERED MAGNET AND MAKING METHOD

R-(Fe, Co)-B Sintered Magnet and Making Method

RARE EARTH SINTERED MAGNET AND MAKING METHOD

R-FE-B SINTERED MAGNET AND MAKING METHOD

R-FE-B SINTERED MAGNET AND MAKING METHOD

R-FE-B SINTERED MAGNET AND MAKING METHOD

METHOD FOR ASSEMBLING ROTOR FOR USE IN IPM ROTARY MACHINE

METHOD OF MANUFACTURING AN Nd BASED SINTERED MAGNET

RARE EARTH SINTERED MAGNET AND MAKING METHOD

ND BASED SINTERED MAGNET AND ITS PREPARATION

PREPARATION OF RARE EARTH PERMANENT MAGNET MATERIAL

ROTOR FOR PERMANENT MAGNET ROTARY MACHINE