Inventor · disambiguated record
Futoshi Kuniyoshi
Also filed as: KUNIYOSHI FUTOSHI
40 granted patents·13 pending applications·80 citations·filing 2000–2025
96Inventor score
Top patents by PatentIndex Score
53 records- 0190US8317941B2R-T-B-type sintered magnet and method for production thereofKUNIYOSHI FUTOSHI·Filed 2009·Granted Nov 27, 2012·9 cites·5 claims
- 0287US8287661B2Method for producing R-T-B sintered magnetISHII RINTARO·Filed 2010·Granted Oct 16, 2012·11 cites·6 claims
- 0381US7931756B2Method and machine of making rare-earth alloy granulated powder and method of making rare-earth alloy sintered bodyHITACHI METALS LTD·Filed 2009·Granted Apr 26, 2011·6 cites·9 claims
- 0480US9293252B2R-T-B sintered magnet manufacturing methodKUNIYOSHI FUTOSHI·Filed 2011·Granted Mar 22, 2016·2 cites·1 claims
- 0579US9415444B2Process for production of R-T-B based sintered magnets and R-T-B based sintered magnetsKUNIYOSHI FUTOSHI·Filed 2010·Granted Aug 16, 2016·3 cites·5 claims
- 0679US9368276B2Method for producing R-T-B-based sintered magnetsKUNIYOSHI FUTOSHI·Filed 2011·Granted Jun 14, 2016·4 cites·8 claims
- 0779US2025345850A1Method for manufacturing r-t-b based sintered magnet, and r-t-b based sintered magnetPROTERIAL LTD·Filed 2025·Application pending·0 cites
- 0878US9478332B2Method for producing R-T-B sintered magnetHITACHI METALS LTD·Filed 2013·Granted Oct 25, 2016·2 cites·1 claims
- 0970US9613748B2RH diffusion source, and method for producing R-T-B-based sintered magnet using sameKUNIYOSHI FUTOSHI·Filed 2012·Granted Apr 4, 2017·2 cites·2 claims
- 1070US2024363272A1R-t-b based sintered magnetPROTERIAL LTD·Filed 2024·Application pending·0 cites
- 1169US8092619B2R-T-Cu-Mn-B type sintered magnetKUNIYOSHI FUTOSHI·Filed 2009·Granted Jan 10, 2012·4 cites·7 claims
- 1268US2024112854A1Method for recycling rare earth element-containing powder, and method for producing rare earth sintered magnetPROTERIAL LTD·Filed 2023·Application pending·0 cites
- 1367US2024212895A1Sintered r-t-b based magnetPROTERIAL LTD·Filed 2023·Application pending·0 cites
- 1465US12397347B2Method for manufacturing R-T-B based sintered magnet, and R-T-B based sintered magnetPROTERIAL LTD·Filed 2020·Granted Aug 26, 2025·0 cites·10 claims
- 1563US11823824B2R-T-B sintered magnetPROTERIAL LTD·Filed 2021·Granted Nov 21, 2023·0 cites·7 claims
- 1663US2025197977A1R-t-b sintered magnetPROTERIAL LTD·Filed 2023·Application pending·0 cites
- 1761US11239011B2Sintered R-T-B based magnetHITACHI METALS LTD·Filed 2020·Granted Feb 1, 2022·0 cites·1 claims
- 1861US7622010B2Method and apparatus for producing granulated powder of rare earth alloy and method for producing rare earth alloy sintered compactHITACHI METALS LTD·Filed 2002·Granted Nov 24, 2009·6 cites·2 claims
- 1961US6482353B1Method for manufacturing rare earth magnetSUMITOMO SPEC METALS·Filed 2000·Granted Nov 19, 2002·6 cites·21 claims
- 2061US2023307158A1Sintered r-t-b based magnetPROTERIAL LTD·Filed 2023·Application pending·0 cites
- 2158US6511631B2Powder compacting apparatus and method of producing a rare-earth magnet using the sameSUMITOMO SPEC METALS·Filed 2001·Granted Jan 28, 2003·6 cites·8 claims
- 2257US10984930B2Method for producing sintered R—T—B based magnet and diffusion sourceHITACHI METALS LTD·Filed 2018·Granted Apr 20, 2021·0 cites·4 claims
- 2357US8142573B2R-T-B sintered magnet and method for producing the sameKOBAYASHI HIROYA·Filed 2008·Granted Mar 27, 2012·1 cites·16 claims
- 2457US6344168B1Method of producing R-Fe-B type sintered magnet, method of preparing alloy powder material for R-Fe-B type sintered magnet, and method of preserving the sameSUMITOMO SPEC METALS·Filed 2000·Granted Feb 5, 2002·4 cites·32 claims
- 2556US10847290B2R-T-B based sintered magnetHITACHI METALS LTD·Filed 2014·Granted Nov 24, 2020·0 cites·7 claims
- 2656US7214343B2Method for producing granulated powder of R—FE—B type alloy and method for producing R—FE—B type alloy sintered compactNEOMAX CO LTD·Filed 2002·Granted May 8, 2007·5 cites·6 claims
- 2756US7141126B2Rare earth magnet and method for manufacturing the sameNEOMAX CO LTD·Filed 2004·Granted Nov 28, 2006·4 cites·9 claims
- 2853US11062843B2Method for producing sintered R-T-B based magnet and diffusion sourceHITACHI METALS LTD·Filed 2018·Granted Jul 13, 2021·0 cites·4 claims
- 2953US10388442B2R-T-B based sintered magnet and method for producing R-T-B based sintered magnetHITACHI METALS LTD·Filed 2014·Granted Aug 20, 2019·0 cites·9 claims
- 3053US2016042847A1R-t-b based sintered magnetHITACHI METALS LTD·Filed 2014·Application pending·0 cites
- 3153US2016042848A1R-t-b based sintered magnetHITACHI METALS LTD·Filed 2014·Application pending·0 cites
- 3252US11174537B2R-T-B sintered magnetHITACHI METALS LTD·Filed 2017·Granted Nov 16, 2021·0 cites·7 claims
- 3352US10643789B2Method for producing R-T-B sintered magnetHITACHI METALS LTD·Filed 2018·Granted May 5, 2020·0 cites·4 claims
- 3450US11037724B2Method for producing R-T-B sintered magnetHITACHI METALS LTD·Filed 2018·Granted Jun 15, 2021·0 cites·3 claims
- 3550US2024170206A1Method for producing r-t-b based sintered magnetPROTERIAL LTD·Filed 2022·Application pending·0 cites
- 3649US11062844B2Method of producing R-T-B sintered magnetHITACHI METALS LTD·Filed 2017·Granted Jul 13, 2021·0 cites·4 claims
- 3748US11738390B2Method of producing R-T-B sintered magnetPROTERIAL LTD·Filed 2017·Granted Aug 29, 2023·0 cites·11 claims
- 3848US9484151B2Method of producing R-T-B sintered magnetKUNIYOSHI FUTOSHI·Filed 2012·Granted Nov 1, 2016·0 cites·1 claims
- 3947US10923256B2R-T-B-based sintered magnet and method for producing sameHITACHI METALS LTD·Filed 2016·Granted Feb 16, 2021·0 cites·7 claims
- 4047US10639720B2Diffusion treatment device and method for manufacturing R-T-B system sintered magnet using sameHITACHI METALS LTD·Filed 2016·Granted May 5, 2020·0 cites·19 claims
- 4147US2005098239A1R-T-B based permanent magnet material alloy and R-T-B based permanent magnetSHOWA DENKO KK·Filed 2004·Application pending·0 cites
- 4246US11177069B2Method for producing R-T-B system sintered magnetHITACHI METALS LTD·Filed 2016·Granted Nov 16, 2021·0 cites·6 claims
- 4346US10658108B2Method for producing R-T-B based sintered magnetHITACHI METALS LTD·Filed 2014·Granted May 19, 2020·0 cites·12 claims
- 4445US10217562B2Method for manufacturing R-T-B based sintered magnetHITACHI METALS LTD·Filed 2016·Granted Feb 26, 2019·0 cites·12 claims
- 4545US9837193B2R-T-B sintered magnetKUNIYOSHI FUTOSHI·Filed 2012·Granted Dec 5, 2017·0 cites·1 claims
- 4644US8317937B2Alloy for sintered R-T-B-M magnet and method for producing sameKUNIYOSHI FUTOSHI·Filed 2010·Granted Nov 27, 2012·0 cites·5 claims
- 4743US6969244B2Powder compacting apparatus and method of producing a rare-earth magnet using the sameNEOMAX CO LTD·Filed 2002·Granted Nov 29, 2005·5 cites·14 claims
- 4842US2018025819A1Method for producing r-t-b system sintered magnetHITACHI METALS LTD·Filed 2016·Application pending·0 cites
- 4941US10446306B2Method for manufacturing R-T-B based sintered magnetHITACHI METALS LTD·Filed 2015·Granted Oct 15, 2019·0 cites·2 claims
- 5041US10242781B2Method for manufacturing R-T-B based sintered magnetHITACHI METALS LTD·Filed 2016·Granted Mar 26, 2019·0 cites·9 claims
Showing the top 50 of 53 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →