Inventor · disambiguated record
Masato Sagawa
Also filed as: SAGAWA MASATO
67 granted patents·22 pending applications·1,546 citations·filing 1976–2022
99Inventor score
Files withINTERMETALLICS CO LTD41SUMITOMO SPEC METALS23SAGAWA MASATO11FUJITSU LTD4AIMANTS UGIMAG SA2
Top patents by PatentIndex Score
89 records- 0199US4792368AMagnetic materials and permanent magnetsSUMITOMO SPEC METALS·Filed 1983·Granted Dec 20, 1988·143 cites·40 claims
- 0299US4770723AMagnetic materials and permanent magnetsSUMITOMO SPEC METALS·Filed 1987·Granted Sep 13, 1988·196 cites·35 claims
- 0399US4597938AProcess for producing permanent magnet materialsSUMITOMO SPEC METALS·Filed 1983·Granted Jul 1, 1986·111 cites·32 claims
- 0498US4601875AProcess for producing magnetic materialsSUMITOMO SPEC METALS·Filed 1983·Granted Jul 22, 1986·98 cites·38 claims
- 0597US5250255AMethod for producing permanent magnet and sintered compact and production apparatus for making green compactsINTERMETALLICS CO LTD·Filed 1991·Granted Oct 5, 1993·78 cites·150 claims
- 0694US4773950APermanent magnetSUMITOMO SPEC METALS·Filed 1983·Granted Sep 27, 1988·46 cites·26 claims
- 0794US4684406APermanent magnet materialsSUMITOMO SPEC METALS·Filed 1986·Granted Aug 4, 1987·59 cites·1 claims
- 0893US5645651AMagnetic materials and permanent magnetsSUMITOMO SPEC METALS·Filed 1995·Granted Jul 8, 1997·50 cites·24 claims
- 0991US6764643B2Powder compaction methodSAGAWA MASATO·Filed 2002·Granted Jul 20, 2004·25 cites·27 claims
- 1090US6814928B2Method of making sintered articlesINTERMETALLICS CO LTD·Filed 2002·Granted Nov 9, 2004·22 cites·12 claims
- 1188US8801870B2Method for making NdFeB sintered magnetSAGAWA MASATO·Filed 2008·Granted Aug 12, 2014·5 cites·9 claims
- 1288US4767474AIsotropic magnets and process for producing sameSUMITOMO SPEC METALS·Filed 1983·Granted Aug 30, 1988·33 cites·23 claims
- 1387US4826546AProcess for producing permanent magnets and products thereofSUMITOMO SPEC METALS·Filed 1987·Granted May 2, 1989·33 cites·50 claims
- 1485US9028624B2NdFeB system sintered magnet and method for producing the sameINTERMETALLICS CO LTD·Filed 2012·Granted May 12, 2015·4 cites·2 claims
- 1585US6155028AMethod and apparatus for packing materialINTERMETALLICS CO LTD·Filed 1998·Granted Dec 5, 2000·26 cites·7 claims
- 1685US4840684AIsotropic permanent magnets and process for producing sameSUMITOMO SPEC METALS·Filed 1983·Granted Jun 20, 1989·27 cites·13 claims
- 1784US8545641B2Method and system for manufacturing sintered rare-earth magnet having magnetic anisotropySAGAWA MASATO·Filed 2005·Granted Oct 1, 2013·8 cites·42 claims
- 1884US5672363AProduction apparatus for making green compactINTERMETALLICS CO LTD·Filed 1995·Granted Sep 30, 1997·72 cites·24 claims
- 1983US9589714B2Sintered NdFeB magnet and method for manufacturing the sameSAGAWA MASATO·Filed 2010·Granted Mar 7, 2017·3 cites·3 claims
- 2082US5725816APacking methodINTERMETALLICS CO LTD·Filed 1996·Granted Mar 10, 1998·27 cites·21 claims
- 2181US5000800APermanent magnet and method for producing the sameSAGAWA MASATO·Filed 1989·Granted Mar 19, 1991·27 cites·20 claims
- 2278US4859255APermanent magnetsSUMITOMO SPEC METALS·Filed 1988·Granted Aug 22, 1989·25 cites·28 claims
- 2377US4975130APermanent magnet materialsSUMITOMO SPEC METALS·Filed 1987·Granted Dec 4, 1990·20 cites·9 claims
- 2475US5466308AMagnetic precursor materials for making permanent magnetsSUMITOMO SPEC METALS·Filed 1994·Granted Nov 14, 1995·17 cites·28 claims
- 2575US5449481AMethod and apparatus for producing a powder compactINTERMETALLICS CO LTD·Filed 1993·Granted Sep 12, 1995·19 cites·13 claims
- 2674US9412505B2NdFeB system sintered magnetINTERMETALLICS CO LTD·Filed 2012·Granted Aug 9, 2016·2 cites·6 claims
- 2774US8420160B2Method for producing sintered NdFeB magnetSAGAWA MASATO·Filed 2007·Granted Apr 16, 2013·1 cites·19 claims
- 2874US5230749APermanent magnetsSUMITOMO SPEC METALS·Filed 1991·Granted Jul 27, 1993·26 cites·6 claims
- 2972US5766372AMethod of making magnetic precursor for permanent magnetsSUMITOMO SPEC METALS·Filed 1997·Granted Jun 16, 1998·17 cites·24 claims
- 3072US5411603AMethod of protecting magnetic powders and densified permanent magnets of the Fe Nd B type from oxidation and atmospheric corrosionUGIMAG SA·Filed 1993·Granted May 2, 1995·25 cites·6 claims
- 3170US10629345B2Production method of rare earth sintered magnet and production device used in the production methodNDFEB CORP·Filed 2015·Granted Apr 21, 2020·1 cites·18 claims
- 3270US10475561B2RFeB system magnet production method, RFeB system magnet, and coating material for grain boundary diffusion treatmentINTERMETALLICS CO LTD·Filed 2014·Granted Nov 12, 2019·1 cites·9 claims
- 3369US10290408B2NdFeB system sintered magnetINTERMETALLICS CO LTD·Filed 2016·Granted May 14, 2019·0 cites·7 claims
- 3469US5273782ACoated parts with film having powder-skeleton structure, and method for forming coatingINTERMETALLICS CO LTD·Filed 1992·Granted Dec 28, 1993·36 cites·29 claims
- 3568US4047982APermanent magnet and process for producing the sameFUJITSU LTD·Filed 1976·Granted Sep 13, 1977·16 cites·29 claims
- 3666US5194098AMagnetic materialsSUMITOMO SPEC METALS·Filed 1992·Granted Mar 16, 1993·19 cites·3 claims
- 3765US5660929APerpendicular magnetic recording medium and method of producing sameSUMITOMO SPEC METALS·Filed 1993·Granted Aug 26, 1997·22 cites·62 claims
- 3864US4975129APermanent magnetSUMITOMO SPEC METALS·Filed 1988·Granted Dec 4, 1990·13 cites·25 claims
- 3963US6475430B1Method and apparatus for packing material including air tappingINTERMETALLICS CO LTD·Filed 2000·Granted Nov 5, 2002·7 cites·5 claims
- 4063US6113979APowder coatings and methods for forming a coating using the sameINTERMETALLICS CO LTD·Filed 1998·Granted Sep 5, 2000·18 cites·1 claims
- 4163US5762967ARubber mold for producing powder compactsINTERMETALLICS CO LTD·Filed 1996·Granted Jun 9, 1998·23 cites·9 claims
- 4263US5505990AMethod for forming a coating using powders of different fusion pointsINTERMETALLICS CO LTD·Filed 1994·Granted Apr 9, 1996·19 cites·25 claims
- 4363US5167914ARare earth magnet having excellent corrosion resistanceSUMITOMO SPEC METALS·Filed 1991·Granted Dec 1, 1992·17 cites·19 claims
- 4463US2014308440A1METHOD FOR MAKING NdFeB SINTERED MAGNETINTERMETALLICS CO LTD·Filed 2014·Application pending·0 cites
- 4562US5110377AProcess for producing permanent magnets and products thereofSUMITOMO SPEC METALS·Filed 1990·Granted May 5, 1992·15 cites·30 claims
- 4661US2017103851A1Sintered ndfeb magnet and method for manufacturing the sameINTERMETALLICS CO LTD·Filed 2016·Application pending·0 cites
- 4760US9449758B1Powder-filling systemINTERMETALLICS CO LTD·Filed 2016·Granted Sep 20, 2016·0 cites·4 claims
- 4859US2013189426A1Method for producing sintered ndfeb magnetINTERMETALLICS CO LTD·Filed 2013·Application pending·0 cites
- 4958US10546673B2NdFeB system sintered magnetINTERMETALLICS CO LTD·Filed 2013·Granted Jan 28, 2020·0 cites·10 claims
- 5057US10854380B2NdFeB sintered magnet and method for producing the sameDAIDO STEEL CO LTD·Filed 2013·Granted Dec 1, 2020·0 cites·3 claims
Showing the top 50 of 89 patent records by PatentIndex Score.
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