P

Inventor

HIROTA KOICHI

JP83 patents
⚠️ This page may combine multiple inventors who share the name “HIROTA KOICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SHINETSU CHEMICAL CO

22 patents
US7559996B2Jul 14, 2009

Rare earth permanent magnet, making method, and permanent magnet rotary machine

SHINETSU CHEMICAL CO36 citations93
US6960240B2Nov 1, 2005

Remelting of rare earth magnet scrap and/or sludge, magnet-forming alloy, and sintered rare earth magnet

SHINETSU CHEMICAL CO34 citations93
US6322637B1Nov 27, 2001

Thin ribbon of rare earth-based permanent magnet alloy

SHINETSU CHEMICAL CO16 citations93
US6319335B1Nov 20, 2001

Quenched thin ribbon of rare earth/iron/boron-based magnet alloy

SHINETSU CHEMICAL CO16 citations93
US9892831B2Feb 13, 2018

R-Fe—B sintered magnet and making method

SHINETSU CHEMICAL CO11 citations84
US8377233B2Feb 19, 2013

Preparation of rare earth permanent magnet material

SHINETSU CHEMICAL CO12 citations84
US7955443B2Jun 7, 2011

Method for preparing rare earth permanent magnet material

SHINETSU CHEMICAL CO8 citations84
US7531933B2May 12, 2009

Permanent magnet rotating machine

SHINETSU CHEMICAL CO16 citations84
US7488395B2Feb 10, 2009

Functionally graded rare earth permanent magnet

SHINETSU CHEMICAL CO8 citations84
US7485193B2Feb 3, 2009

R-FE-B based rare earth permanent magnet material

SHINETSU CHEMICAL CO13 citations84
US10410775B2Sep 10, 2019

R—Fe—B sintered magnet and making method

SHINETSU CHEMICAL CO7 citations83
US7204891B2Apr 17, 2007

Remelting of rare earth magnet scrap and/or sludge, magnet-forming alloy, and sintered rare earth magnet

SHINETSU CHEMICAL CO8 citations74
US6419723B2Jul 16, 2002

Thin ribbon of rare earth-based permanent magnet alloy

SHINETSU CHEMICAL CO9 citations74
US10937578B2Mar 2, 2021

Method for preparing R—Fe—B sintered magnet

SHINETSU CHEMICAL CO3 citations73
US10515747B2Dec 24, 2019

R-Fe-B sintered magnet and making method

SHINETSU CHEMICAL CO2 citations73
US9742248B2Aug 22, 2017

Method for assembling rotor for use in IPM rotary machine

SHINETSU CHEMICAL CO2 citations73
US7488393B2Feb 10, 2009

Rare earth permanent magnet

SHINETSU CHEMICAL CO7 citations73
US8012269B2Sep 6, 2011

Nd-Fe-B rare earth permanent magnet material

SHINETSU CHEMICAL CO5 citations63
US7988795B2Aug 2, 2011

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

SHINETSU CHEMICAL CO6 citations63
US7883587B2Feb 8, 2011

Method for preparing rare earth permanent magnet

SHINETSU CHEMICAL CO2 citations63
US12172211B2Dec 24, 2024

Method for producing magnetic refrigeration material, and magnetic refrigeration material

SHINETSU CHEMICAL CO0 citations62
US11806782B2Nov 7, 2023

Method for producing magnetic refrigeration material, and magnetic refrigeration material

SHINETSU CHEMICAL CO0 citations62

AISIN SEIKI

14 patents

NAKAMURA HAJIME

3 patents

NIPPON CATALYTIC CHEM IND

3 patents

DOI YUHITO

2 patents

HIROTA KOICHI

2 patents

OKADA TAKASHI

1 patent

WATANABE NAOKI

1 patent

MIYAJIMA TAKAYUKI

1 patent

LINTEC CORP

1 patent

Showing the top 50 of 83 patents by PatentIndex Score.