Patents by Inventor Masashi Matsuda
Masashi Matsuda 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: 9321963Abstract: A flame-retardant styrene thermoplastic resin composition including 6 to 15 parts by weight of a phosphoric acid ester flame retardant (II) and 0.1 to 3 parts by weight of an aromatic carbonate oligomer (III) having a viscosity average molecular weight [Mv] of 1,000 to 10,000 with respect to 100 parts by weight of a styrene resin (I), and molded products thereof have excellent flame retardancy, mechanical properties and moldability.Type: GrantFiled: September 21, 2011Date of Patent: April 26, 2016Assignee: TORAY INDUSTRIES, INC.Inventors: Nobuaki Shirakawa, Kosuke Shirotani, Masashi Matsuda
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Publication number: 20160028277Abstract: A multi-Lundell motor includes a rotor and a stator. The rotor includes first and second rotor cores and a permanent magnet. The first and second rotor cores each include claw poles in the circumferential direction. The permanent magnet is magnetized in the axial direction between the first and second rotor cores. The stator includes first and second stator cores and a winding. The first and second stator cores each include claw poles in the circumferential direction. The winding is arranged between the first and second stator cores and extended in the circumferential direction. At least one of the first and second rotor cores and the first and second stator cores include core segments arranged in the circumferential direction.Type: ApplicationFiled: July 15, 2015Publication date: January 28, 2016Applicant: ASMO CO., LTD.Inventors: Yoshiaki Takemoto, Seiya Yokoyama, Masashi Matsuda, Shigemasa Kato
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Publication number: 20150171681Abstract: A rotor includes magnetic pole portions and first and second ferric core portions. The first and second ferric core portions are each located between magnetic pole portions in the circumferential direction of a rotor. A first gap is formed between the first or second ferric core portion and a magnetic pole portion at a first circumferential side. A second gap is formed between the first or second ferric core portion and the magnetic pole portion at a second circumferential side. The first gap has a smaller width than the second gap at the first ferric core portion. The first ferric core portion is inclined toward the first circumferential side. The first gap is larger than the second gap at the second ferric core portion. The second ferric core portion is inclined toward the second circumferential side.Type: ApplicationFiled: February 6, 2015Publication date: June 18, 2015Inventors: Kenta Goto, Hideaki Nishiura, Shigemasa Kato, Yoshiyuki Takabe, Masashi Matsuda, Toshihiro Uchida
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Patent number: 9035527Abstract: A motor has a plurality of permanent magnet pieces aligned is such a manner as to surround an armature core and a magnetic-flux guide ring disposed between the permanent magnet pieces and the armature core for introducing a magnetic flux from the permanent magnet pieces to the armature core. The magnetic-flux guide ring has a confronting portion confronting each of the magnet pieces, an aperture formed in the confronting portion, and a connecting portion connecting adjacent two confronting portions. The aperture is formed in such a manner as to confront a boundary of adjacent magnet pieces.Type: GrantFiled: July 6, 2012Date of Patent: May 19, 2015Assignee: ASMO CO., LTD.Inventors: Masashi Matsuda, Tomohiro Aoyama
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Publication number: 20150084470Abstract: A motor includes a rotor and a stator. The rotor includes a first rotor core including a plurality of first claw-like magnetic poles, a second rotor core including a plurality of second claw-like magnetic poles, and a magnetic field magnet arranged between the first and second rotor cores. The first and second claw-like magnetic poles are alternately arranged in a circumferential direction. The magnetic field magnet causes the first and second claw-like magnetic poles to function as magnetic poles different from each other. The stator includes a first stator core including a plurality of first claw-like magnetic poles, a second stator core including a plurality of second claw-like magnetic poles, and a coil section arranged between the first and second stator cores. The stator is configured to cause the first and second claw-like magnetic poles of the stator to function as magnetic poles different from each other and switch polarities of the magnetic poles on the basis of energization to the coil section.Type: ApplicationFiled: September 18, 2014Publication date: March 26, 2015Applicant: ASMO CO., LTD.Inventors: Yoshiaki Takemoto, Masashi Matsuda, Yusuke Morimoto
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Patent number: 8981611Abstract: A rotor includes magnetic pole portions and first and second ferric core portions. The first and second ferric core portions are each located between magnetic pole portions in the circumferential direction of a rotor. A first gap is formed between the first or second ferric core portion and a magnetic pole portion at a first circumferential side. A second gap is formed between the first or second ferric core portion and the magnetic pole portion at a second circumferential side. The first gap has a smaller width than the second gap at the first ferric core portion. The first ferric core portion is inclined toward the first circumferential side. The first gap is larger than the second gap at the second ferric core portion. The second ferric core portion is inclined toward the second circumferential side.Type: GrantFiled: October 24, 2012Date of Patent: March 17, 2015Assignee: ASMO Co., Ltd.Inventors: Kenta Goto, Hideaki Nishiura, Shigemasa Kato, Yoshiyuki Takabe, Masashi Matsuda, Toshihiro Uchida
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Publication number: 20140203677Abstract: A rotor with four axially stacked rotor cores, and a plurality of field magnets interposed between them. Each rotor core includes a rotor-side claw-shaped magnetic pole. Each rotor-side claw-shaped magnetic poles are respectively extending from and formed on each rotor core at equal angle intervals. Tip end surfaces of the first and third rotor-side claw-shaped magnetic pole abut against or are closely opposed to each other axially. Tip end surfaces of the second and fourth rotor-side claw-shaped magnetic poles abut against or are closely opposed to each other in the axial direction. The plurality of field magnets are magnetized in the axial direction such that the field magnets causes the first and third rotor-side claw-shaped magnetic poles to function as first magnetic poles, and cause the second and fourth rotor-side claw-shaped magnetic poles to function as second magnetic poles.Type: ApplicationFiled: January 21, 2014Publication date: July 24, 2014Inventors: Yoshiaki TAKEMOTO, Yusuke MORIMOTO, Masashi MATSUDA, Seiya YOKOYAMA
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Publication number: 20130221293Abstract: A flame-retardant styrene thermoplastic resin composition including 6 to 15 parts by weight of a phosphoric acid ester flame retardant (II) and 0.1 to 3 parts by weight of an aromatic carbonate oligomer (III) having a viscosity average molecular weight [Mv] of 1,000 to 10,000 with respect to 100 parts by weight of a styrene resin (I), and molded products thereof have excellent flame retardancy, mechanical properties and moldability.Type: ApplicationFiled: September 21, 2011Publication date: August 29, 2013Applicant: TORAY INDUSTRIES, INC.Inventors: Nobuaki Shirakawa, Kosuke Shirotani, Masashi Matsuda
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Publication number: 20130059375Abstract: The present invention provides a method of producing a mammalian ES cell, including cultivating a mammalian inner cell mass in a medium containing adrenocorticotropic hormone, an FGF receptor inhibitor, an MEK activation inhibitor and a GSK3 inhibitor, and isolating a mammalian ES cell from the culture.Type: ApplicationFiled: April 1, 2011Publication date: March 7, 2013Applicant: RIKENInventors: Haruhiko Koseki, Takanori Hasegawa, Tomoyuki Ishikura, Masashi Matsuda
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Publication number: 20130026877Abstract: A motor has a plurality of permanent magnet pieces aligned is such a manner as to surround an armature core and a magnetic-flux guide ring disposed between the permanent magnet pieces and the armature core for introducing a magnetic flux from the permanent magnet pieces to the armature core. The magnetic-flux guide ring has a confronting portion confronting each of the magnet pieces, an aperture formed in the confronting portion, and a connecting portion connecting adjacent two confronting portions. The aperture is formed in such a manner as to confront a boundary of adjacent magnet pieces.Type: ApplicationFiled: July 6, 2012Publication date: January 31, 2013Applicant: ASMO CO., LTD.Inventors: Masashi Matsuda, Tomohiro Aoyama
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Patent number: 8093317Abstract: An antistatic thermoplastic resin composition includes 0.01 to 20 parts by weight of an organic ion conductive agent mixed with 100 parts by weight of a thermoplastic resin composition consisting of 97 to 55 parts by weight of a styrene-based resin and 3 to 45 parts by weight of a copolymer containing alkylene oxide units as a component, and a molded article composed thereof. The antistatic thermoplastic resin composition is low in surface resistivity value, stable in sustained antistatic properly and excellent in moldability, surface appearance and mechanical properties, and can be suitably used as molded articles such as electric and electronic parts, carrier parts for electric and electronic parts, carrier parts for display related parts, etc.Type: GrantFiled: February 6, 2007Date of Patent: January 10, 2012Assignee: Toray Industries, Inc.Inventors: Masashi Matsuda, Akira Saito, Hisashi Yamanoue
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Patent number: 8022589Abstract: Teeth of a stator core are arranged one after another in the circumferential direction at alternating first and second pitches. Each corresponding adjacent two of the teeth, which are spaced from each other by the first pitch, are wound with corresponding two, respectively, of stator coils, which form a corresponding common phase. Each corresponding adjacent two of the teeth, which are spaced from each other by the second pitch, are wound with corresponding two, respectively, of the stator coils, which form corresponding different phases, respectively.Type: GrantFiled: September 8, 2009Date of Patent: September 20, 2011Assignee: ASMO Co., Ltd.Inventor: Masashi Matsuda
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Patent number: 8002372Abstract: A long-life pump capable of simultaneously conveying plural liquids and an inkjet printer having the pump are provided. The liquid pump includes: a liquid storage unit having liquid chambers trapping at least two types of liquids with each chamber corresponding to the type of the trapped liquid; a coupling member for connection to each liquid chamber of the liquid storage unit; a pressure adjusting mechanism, connected to the coupling member, for alternately switching between a negative pressure and a positive pressure of an internal pressure of the liquid chamber; an inlet valve capable of passing the liquid to the liquid chamber; an outlet valve discharging the liquid in the liquid chamber; and a pass resistance variable mechanism adjusting an amount of the liquid trapped in the liquid chamber depending on a level of the liquid in the liquid chamber.Type: GrantFiled: December 19, 2007Date of Patent: August 23, 2011Assignees: Ortek Corporation, Olympus CorporationInventor: Masashi Matsuda
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Patent number: 7832829Abstract: A protruding member is provided on a recording head side, a droplet receiving portion having a flat surface portion formed thereon is provided, and the flat surface portion of the droplet receiving portion is brought into contact with the protruding member on the recording head side to cap the recording head.Type: GrantFiled: March 1, 2007Date of Patent: November 16, 2010Assignee: Olympus CorporationInventor: Masashi Matsuda
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Patent number: 7745964Abstract: In a brushless motor, a stator includes an annular core member. A rotatable shaft is placed radially inward of the core member and extends in an axial direction. A rotor is supported by the rotatable shaft. A centerpiece supports the core member and includes a center portion, which is placed radially inward of the core member. A platy vibration absorbing member connects between the core member and the center portion of the centerpiece and damps circumferential vibrations transmitted from the core member.Type: GrantFiled: May 22, 2008Date of Patent: June 29, 2010Assignee: Asmo Co., Ltd.Inventors: Fumio Fukuno, Tatsuya Kawai, Masashi Matsuda
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Publication number: 20100066188Abstract: Teeth of a stator core are arranged one after another in the circumferential direction at alternating first and second pitches. Each corresponding adjacent two of the teeth, which are spaced from each other by the first pitch, are wound with corresponding two, respectively, of stator coils, which form a corresponding common phase. Each corresponding adjacent two of the teeth, which are spaced from each other by the second pitch, are wound with corresponding two, respectively, of the stator coils, which form corresponding different phases, respectively.Type: ApplicationFiled: September 8, 2009Publication date: March 18, 2010Applicant: ASMO CO., LTD.Inventor: Masashi Matsuda
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Publication number: 20090030122Abstract: An antistatic thermoplastic resin composition includes 0.01 to 20 parts by weight of an organic ion conductive agent mixed with 100 parts by weight of a thermoplastic resin composition consisting of 97 to 55 parts by weight of a styrene-based resin and 3 to 45 parts by weight of a copolymer containing alkylene oxide units as a component, and a molded article composed thereof. The antistatic thermoplastic resin composition is low in surface resistivity value, stable in sustained antistatic properly and excellent in moldability, surface appearance and mechanical properties, and can be suitably used as molded articles such as electric and electronic parts, carrier parts for electric and electronic parts, carrier parts for display related parts, etc.Type: ApplicationFiled: February 6, 2007Publication date: January 29, 2009Applicant: Toray Industries, Inc.Inventors: Masashi Matsuda, Akira Saito, Hisashi Yamanoue
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Publication number: 20080296985Abstract: In a brushless motor, a stator includes an annular core member. A rotatable shaft is placed radially inward of the core member and extends in an axial direction. A rotor is supported by the rotatable shaft. A centerpiece supports the core member and includes a center portion, which is placed radially inward of the core member. A platy vibration absorbing member connects between the core member and the center portion of the centerpiece and damps circumferential vibrations transmitted from the core member.Type: ApplicationFiled: May 22, 2008Publication date: December 4, 2008Applicant: ASMO CO., LTD.Inventors: Fumio Fukuno, Tatsuya Kawai, Masashi Matsuda
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Publication number: 20080151014Abstract: A long-life pump capable of simultaneously conveying plural liquids and an inkjet printer having the pump are provided. The liquid pump includes: a liquid storage unit having liquid chambers trapping at least two types of liquids with each chamber corresponding to the type of the trapped liquid; a coupling member for connection to each liquid chamber of the liquid storage unit; a pressure adjusting mechanism, connected to the coupling member, for alternately switching between a negative pressure and a positive pressure of an internal pressure of the liquid chamber; an inlet valve capable of passing the liquid to the liquid chamber; an outlet valve discharging the liquid in the liquid chamber; and a pass resistance variable mechanism adjusting an amount of the liquid trapped in the liquid chamber depending on a level of the liquid in the liquid chamber.Type: ApplicationFiled: December 19, 2007Publication date: June 26, 2008Applicant: Olympus CorporationInventor: Masashi Matsuda
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Patent number: 7380923Abstract: An overflow liquid pipe is disposed in such a manner as to pass a liquid which has overflowed from a first container flowing to a second container. The overflow liquid pipe is provided with a pressurizing pipe. A liquid removing unit pressurizes the interior of the overflow liquid pipe through the pressurizing pipe to remove liquid from the overflow liquid pipe.Type: GrantFiled: September 22, 2004Date of Patent: June 3, 2008Assignee: Olympus CorporationInventors: Masashi Matsuda, Noriko Yokoyama