Patents by Inventor Kenichi Unoki
Kenichi Unoki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8172956Abstract: A sintered soft magnetic powder molded body having a composition containing Fe, 44 to 50% by mass of Ni and 2 to 6% by mass of Si, or a composition containing Fe and 2 to 6% by mass of Si, wherein the Si is unevenly distributed among particles, is provided.Type: GrantFiled: May 14, 2008Date of Patent: May 8, 2012Assignee: Mitsubishi Steel Mfg. Co., Ltd.Inventors: Kenichi Unoki, Shoichi Yamasaki, Yuji Soda, Masakatsu Fukuda
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Patent number: 7871474Abstract: A method for manufacturing bodies formed from insulated soft magnetic metal powder by forming an insulating film of an inorganic substance on the surface of particles of a soft magnetic metal powder, compacting and molding the powder, then carrying out a heat treatment to provide a body formed from insulated soft magnetic metal powder the method comprising: compacting and molding the powder; then magnetically annealing the powder at a high temperature above the Curie temperature for the soft magnetic metal powder and below the threshold temperature at which the insulating film is destroyed in a non-oxidizing atmosphere, such as a vacuum, inert gas, or the like; and then carrying out a further heat treatment at a temperature of from 400° C. to 700° C. in an oxidizing atmosphere, such as air, or the like.Type: GrantFiled: July 3, 2006Date of Patent: January 18, 2011Assignee: Mitsubishi Steel Mfg. Co. Ltd.Inventors: Kenichi Unoki, Kenichi Nagai, Shoichi Yamasaki, Yuji Soda
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Publication number: 20100162851Abstract: A sintered soft magnetic powder molded body having a composition containing Fe, 44 to 50% by mass of Ni and 2 to 6% by mass of Si, or a composition containing Fe and 2 to 6% by mass of Si, wherein the Si is unevenly distributed among particles, is provided.Type: ApplicationFiled: April 14, 2008Publication date: July 1, 2010Applicant: MITSUBISHI STEEL MFG. CO., LTD.Inventors: Kenichi Unoki, Soichi Yamamoto, Yuji Soda, Masakatsu Fukuda
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Publication number: 20090116990Abstract: A method for manufacturing bodies formed from insulated soft magnetic metal powder by forming an insulating film of an inorganic substance on the surface of particles of a soft magnetic metal powder, compacting and molding the powder, then carrying out a heat treatment to provide a body formed from insulated soft magnetic metal powder the method comprising: compacting and molding the powder; then magnetically annealing the powder at a high temperature above the Curie temperature for the soft magnetic metal powder and below the threshold temperature at which the insulating film is destroyed in a non-oxidizing atmosphere, such as a vacuum, inert gas, or the like; and then carrying out a further heat treatment at a temperature of from 400° C. to 700° C. in an oxidizing atmosphere, such as air, or the like.Type: ApplicationFiled: July 7, 2006Publication date: May 7, 2009Inventors: Kenichi Unoki, Kenichi Nagai, Shoichi Yamasaki, Yuji Soda
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Patent number: 6290776Abstract: A hot dip coating apparatus enables stable and continuous production of a coated steel strip having a high degree of uniformity of the coating quality over the breadth of the steel strip and clean coated surfaces free of deposition of dross. The hot dip coating apparatus has a bottom slit through which a steel strip to be coated is introduced and pulled upward through the coating tank, and an electromagnetic sealing device which applies a magnetic field to the molten metal in the coating tank so as to hold the molten metal inside the tank. The coating tank is provided at its top with an overflow dam for allowing the molten mental to overflow out of the coating tank. The apparatus also has a molten metal supply system which produces a circulating flow of the molten metal through the coating tank. The molten metal supply system has molten metal buffers which communicate with a molten metal supply passage and from which the molten metal is discharged towards the steel strip.Type: GrantFiled: June 15, 1999Date of Patent: September 18, 2001Assignees: Kawasaki Steel Corporation, Mitsubishi Heavy Industries, Ltd.Inventors: Masahiko Tada, Chiaki Kato, Toshitane Matsukawa, Kazumasa Mihara, Kenichi Unoki
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Patent number: 5965210Abstract: A hot dip coating apparatus and method, enables stable and continuous production of a coated steel strip having a high degree of uniformity of the coating quality over the breadth of the steel strip and clean coated surfaces free of deposition of dross. The hot dip coating apparatus has a bottom slit through which a steel strip to be coated is introduced and pulled upward through the coating tank, and an electromagnetic sealing device which applies a magnetic field to the molten metal in the coating tank so as to hold the molten metal inside the tank. The coating tank is provided at its top with an overflow dam for allowing the molten metal to overflow out of the coating tank. The apparatus also has a molten metal supply system which produces a circulating flow of the molten metal through the coating tank. The molten metal supply system has molten metal buffers which communicate with a molten metal supply passage and from which the molten metal is discharged towards the steel strip.Type: GrantFiled: December 23, 1997Date of Patent: October 12, 1999Assignees: Kawasaki Steel Corporation, Mitsubishi Heavy Industries, Ltd.Inventors: Masahiko Tada, Chiaki Kato, Toshitane Matsukawa, Kazumasa Mihara, Kenichi Unoki
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Patent number: 5897683Abstract: An apparatus for holding molten metal in a container having an opening at the bottom thereof comprising an electromagnet for generating a horizontal magnetic field in a lower part of the molten metal in the container and a conductive block for guiding part of eddy currents induced in the molten metal by the generation of the horizontal magnetic field, to flow outside the molten metal.Type: GrantFiled: July 8, 1997Date of Patent: April 27, 1999Assignees: Mitsubishi Jukogyo Kabushiki Kaisha, Kawasaki Steel CorporationInventors: Kenichi Unoki, Ritsuo Hashimoto, Noriyuki Kawata, Yasuo Hukada, Chiaki Kato, Toshitane Matsukawa
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Patent number: 5848635Abstract: A continuous casting device includes a pair of cooling rolls (1, 2) that rotate in opposite directions to each other. A pair of side weirs (11) have inner surfaces (11a) that covers the end surfaces (1a, 2a) of the cooling rolls (1, 2) and circular surfaces (12b) that covers the peripheral surfaces (1b, 2b) of the cooling rolls (1, 2). At least one of the side weirs (11) is movable in an axial direction of the cooling rolls (1, 2). The continuous casting device also includes electromagnets for forming a magnetic flux in a direction parallel with a contact surface of the side weirs (11) with the molten metal (4) the contact surface extending along the peripheral surfaces (1b, 2b) of the cooling rolls (1, 2) at the portions opposite to the peripheral surfaces (1b, 2b) of the cooling rolls (1, 2) of the side weirs (11).Type: GrantFiled: July 25, 1996Date of Patent: December 15, 1998Assignee: Mitsubishi Jukogyo Kabushiki KaishaInventors: Tatsufumi Aoi, Noriyuki Kawada, Hiroshi Nakajima, Kenichi Unoki, Motomi Nakashima, Youichi Wakiyama
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Patent number: 5681527Abstract: In a molten metal holding apparatus in which an alternating magnetic flux is generated in the horizontal direction at a lower end portion of a molten metal and the molten metal 7 is held within an upper and lower opening container 6 by an electromagnetic force, solid conductors 8 which are not strong magnetic substances are attached to inner surfaces of both side plates 6x of a portion where the alternating magnetic flux passes through of the upper and lower opening container 6. Further, an apparatus including a circuit 3 to overlay a direct current on an exciting coil 2 or an exciting device 20 to let a direct current magnetic flux act is disclosed.Type: GrantFiled: January 11, 1996Date of Patent: October 28, 1997Assignee: Mitsubishi Jukogyo Kabushiki KaishaInventors: Tatsufumi Aoi, Noriyuki Kawada, Ritsuo Hashimoto, Kenichi Unoki, Motomi Nakashima, Kazumasa Mihara