1
Kanekiyo Hirokazu, Hirosawa Satoshi: Iron-based permanent magnet alloy powders for resin bonded magnets and magnets made therefrom.. Sumitomo Spec Metals, June 14, 1995: EP0657899-A1 (16 worldwide citation)

With the intention of establishing fabrication methods for cheaply produced (Fe,Co)-Cr-B-R-type bonded magnets or (Fe,Co)-Cr-B-R-M-type bonded magnets containing few rare earth elements and having a coercive force iHc above 5 kOe and a residual magnetic flux density Br above 5.5 kG matching the cost ...


2
Hirosawa Satoshi, Kanekiyo Hirokazu: Rare earth magnets and alloy powder for rare earth magnets and their manufacturing methods.. Sumitomo Spec Metals, May 19, 1993: EP0542529-A1 (13 worldwide citation)

For the purpose of establishing the manufacturing method to obtain the Fe3B type Fe-Co-B-R-M system high performance resin bonded magnet which possesses improved iHc and (BH)max and can be reliably mass produced, the specific composition of Fe-Co-B-R(Pr,Nd)-M(Ag,Al,Si,Ga,Cu,Au) type molten alloy was ...


3
Kanekiyo Hirokazu, Kitayama Hirokazu, Hirosawa Satoshi, Miyoshi Toshio: Iron base rare earth alloy powder and compound comprising iron base rare earth alloy powder, and permanent magnet using the same. Sumitomo Spec Metals, December 17, 2003: EP1371434-A1 (13 worldwide citation)

An iron-based rare-earth alloy powder includes: a first iron-based rare-earth alloy powder, which has a mean particle size of 10 mu m to 70 mu m and of which the powder particles have aspect ratios of 0.4 to 1.0; and a second iron-based rare-earth alloy powder, which has a mean particle size of 70 m ...


4
Kanekiyo Hirokazu, Hirosawa Satoshi: Method of manufacturing thin plate magnet having microcrystalline structure. Sumitomo Spec Metals, November 24, 1999: EP0959478-A1 (10 worldwide citation)

The present invention is presented with the object of providing a manufacturing method for thin-plate magnets that, as cast, exhibit an intrinsic coercive force iHc of 2.5 kOe or greater and a residual magnetic flux density Br of 9 kG or greater, exhibit a performance-to-cost ratio comparable to har ...


5
Kanekiyo Hirokazu, Miyoshi Toshio, Hirosawa Satoshi: Nanocomposite magnet and method for producing same. Sumitomo Spec Metals, May 22, 2002: EP1207537-A1 (9 worldwide citation)

A method of making a material alloy for an iron-based rare earth magnet includes the step of forming a melt of an alloy with a composition of (Fe1-mTm)100-x-y-z- n(B1-pCp)xRyTizMn. T is Co and/or Ni; R is at least one element selected from Y (yttrium) and the rare earth elements; and M is at least o ...


6
Kanekiyo Hirokazu, Miyoshi Toshio, Hirosawa Satoshi, Shigemoto Yasutaka, Shioya Yusuke: Permanent magnet including multiple ferromagnetic phases and method for producing the magnet. Sumitomo Spec Metals, November 28, 2001: EP1158545-A1 (9 worldwide citation)

An iron-based rare earth alloy magnet has a composition represented by the general formula: (Fe1-mTm)100-x-y-zQxRyMz, where T is at least one element selected from the group consisting of Co and Ni; Q is at least one element selected from the group consisting of B and C; R is at least one rare earth ...


7
Kanekiyo Hirokazu: Iron-based alloy permanent magnet powder and its manufacturing method. Sumitomo Special Metals, September 7, 2001: JP2001-244107 (9 worldwide citation)

PROBLEM TO BE SOLVED: To provide an iron-based alloy permanent magnet powder improved in filling property and fluidity at molding by making the shape of particles from flat shape into a spherical slope.SOLUTION: When the fusion of a Fe-R-B-based alloy is cooled by a single- roll process, a roll surf ...


8
Mitsugi Toshio, Kanekiyo Hirokazu: Iron-based rare earth alloy magnet and method of manufacturing the same. Sumitomo Special Metals, February 28, 2002: JP2002-064009 (8 worldwide citation)

PROBLEM TO BE SOLVED: To provide an iron-based rare earth alloy magnet which is small in rare earth content, high in magnetization properties, and excellent in rectangularity on a demagnetization curve.SOLUTION: An iron-based rare earth alloy magnet has composition represented by a compositional for ...


9
Kogure Ryosuke, Kanekiyo Hirokazu, Nishiuchi Takeshi, Hirozawa Satoru: Magnetic alloy material and its production method. Sumitomo Special Metals, April 2, 2004: JP2004-100043 (7 worldwide citation)

PROBLEM TO BE SOLVED: To provide a method for producing an LaFe13 based magnetic alloy material at an efficiency higher than that in the conventional one.SOLUTION: The method comprises a stage where the molten metal of an alloy raw material having a prescribed composition is prepared; a stage where ...


10
Hirozawa Satoru, Kanekiyo Hirokazu, Shigemoto Yasutaka, Murakami Yoshikazu: Nanocomposite crystalline sintered magnet and manufacture of the same. Sumitomo Special Metals, December 15, 2000: JP2000-348919 (6 worldwide citation)

PROBLEM TO BE SOLVED: To provide a nanocomposite crystalline sintered magnet of high density and performance at a low cost by molding/solidifying a quench alloy at a lower pressure and temperature.SOLUTION: Quenching/solidifying is performed after a molten metal 21 of an alloy, which is represented, ...