Inventor · disambiguated record
Hiroyuki Tomizawa
Also filed as: TOMIZAWA HIROYUKI
13 granted patents·4 pending applications·91 citations·filing 1990–2009
91Inventor score
Files withHITACHI METALS LTD9NEOMAX CO LTD4TOMIZAWA HIROYUKI2KUNIYOSHI FUTOSHI1SUMITOMO SPEC METALS1
Top patents by PatentIndex Score
17 records- 0193US7789933B2R-T-B based sintered magnetHITACHI METALS LTD·Filed 2009·Granted Sep 7, 2010·10 cites·6 claims
- 0293US7740715B2R-T-B based sintered magnetHITACHI METALS LTD·Filed 2009·Granted Jun 22, 2010·11 cites·6 claims
- 0386US7578892B2Magnetic alloy material and method of making the magnetic alloy materialHITACHI METALS LTD·Filed 2006·Granted Aug 25, 2009·16 cites·14 claims
- 0485US7892365B2Rare earth element-iron-boron alloy, and magnetically anisotropic permanent magnet powder and method for production thereofHITACHI METALS LTD·Filed 2007·Granted Feb 22, 2011·4 cites·9 claims
- 0582US7258751B2Rare earth magnet and method for production thereofNEOMAX CO LTD·Filed 2002·Granted Aug 21, 2007·12 cites·10 claims
- 0669US8092619B2R-T-Cu-Mn-B type sintered magnetKUNIYOSHI FUTOSHI·Filed 2009·Granted Jan 10, 2012·4 cites·7 claims
- 0766US7534311B2R-t-b sintered magnet and rare earth alloyHITACHI METALS LTD·Filed 2004·Granted May 19, 2009·9 cites·8 claims
- 0861US7867343B2Rare earth magnet and method for production thereofHITACHI METALS LTD·Filed 2007·Granted Jan 11, 2011·0 cites·4 claims
- 0960US2008274009A1R-t-b based sintered magnetHITACHI METALS LTD·Filed 2008·Application pending·0 cites
- 1060US2008271821A1R-t-b based sintered magnetHITACHI METALS LTD·Filed 2008·Application pending·0 cites
- 1159US5200001APermanent magnetSUMITOMO SPEC METALS·Filed 1990·Granted Apr 6, 1993·17 cites·26 claims
- 1256US7316752B2R-T-B-C based rare-earth magnetic powder and bonded magnetNEOMAX CO LTD·Filed 2001·Granted Jan 8, 2008·5 cites·16 claims
- 1347US7172659B2Method for producing quenched R-T-B—C alloy magnetNEOMAX CO LTD·Filed 2002·Granted Feb 6, 2007·2 cites·15 claims
- 1444US6818041B2Magnetic alloy powder for permanent magnet and method for producing the sameNEOMAX CO LTD·Filed 2001·Granted Nov 16, 2004·1 cites·13 claims
- 1542US2006016515A1Sinter magnet made from rare earth-iron-boron alloy powder for magnetTOMIZAWA HIROYUKI·Filed 2003·Application pending·0 cites
- 1642US2005268989A1R-t-b sintered magnet and process for producing the sameTOMIZAWA HIROYUKI·Filed 2004·Application pending·0 cites
- 1740US7550047B2Rare earth element-iron-boron alloy and magnetically anisotropic permanent magnet powder and method for production thereofHITACHI METALS LTD·Filed 2002·Granted Jun 23, 2009·0 cites·13 claims
Join the waitlist — get patent alerts
Get an alert when Hiroyuki Tomizawa files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →