Patents by Inventor Mitsuhiro Matsuzaki

Mitsuhiro Matsuzaki 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).

  • Publication number: 20090315414
    Abstract: A canned linear motor armature includes an armature winding, a picture-frame-shaped casing, a flat can, and a plurality of refrigerant flow channels. The armature winding includes a coil. The picture-frame-shaped casing has an opening and encloses the armature winding. The flat can has a plate surface to close and seal the opening of the picture-frame-shaped casing. The plurality of refrigerant flow channels are provided within the can to face the coil of the armature winding.
    Type: Application
    Filed: August 28, 2009
    Publication date: December 24, 2009
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Toru SHIKAYAMA, Muhammad Enamul Kabir, Akihito Toyota, Kenichi Sadakane, Shusaku Yoshida, Mitsuhiro Matsuzaki
  • Patent number: 7569656
    Abstract: There is provided a method for producing a poly(arylene sulfide) in which a dihalo-aromatic compound and an alkali metal halide are polymerized by heating in an organic amide solvent, wherein the cooling time for the polymerization reaction system is significantly reduced. After the polymerization process, there is provided a cooling process for cooling the polymerization reaction system comprising a liquid phase containing the product poly (arylene sulfide) and the organic amide solvent and a vapor phase containing a gas component (A); and in the cooling process, the gas component (A) in the vapor phase is cooled while the content of a low boiling gas component (A1), which has a lower boiling point than water and exists in the gas component (A), is reduced in the vapor phase of the polymerization system.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: August 4, 2009
    Assignee: Kureha Corporation
    Inventors: Masaru Kagoshima, Mitsuhiro Matsuzaki
  • Publication number: 20090156780
    Abstract: A dehydration step is conducted by heating a mixture containing an organic amide solvent and a sulfur source including an alkali metal hydrosulfide, and a part of an overall charged amount of an alkali metal hydroxide as needed. The mixture remaining within the system after the dehydration step is mixed with a dihalo-aromatic compound, the resultant mixture is heated to conduct a polymerization reaction, and the alkali metal hydroxide is added to the mixture for polymerization reaction continuously or in portions to control the pH of the mixture for polymerization reaction within a range of from 7 to 12.5 from the beginning to the end of the polymerization reaction. The poly(arylene sulfide) according to the present invention has a nitrogen content of at most 800 ppm.
    Type: Application
    Filed: February 12, 2009
    Publication date: June 18, 2009
    Inventors: Hirohito Kawama, Mitsuhiro Matsuzaki, Michihisa Miyahara, Koichi Suzuki, Hiroyuki Sato
  • Patent number: 7504476
    Abstract: A dehydration step is conducted by heating a mixture containing an organic amide solvent and a sulfur source including an alkali metal hydrosulfide, and a part of an overall charged amount of an alkali metal hydroxide as needed. The mixture remaining within the system after the dehydration step is mixed with a dihalo-aromatic compound, the resultant mixture is heated to conduct a polymerization reaction, and the alkali metal hydroxide is added to the mixture for polymerization reaction continuously or in portions to control the pH of the mixture for polymerization reaction within a range of from 7 to 12.5 from the beginning to the end of the polymerization reaction. The poly(arylene sulfide) according to the present invention has a nitrogen content of at most 800 ppm.
    Type: Grant
    Filed: January 21, 2004
    Date of Patent: March 17, 2009
    Assignee: Kureha Corporation
    Inventors: Hirohito Kawama, Mitsuhiro Matsuzaki, Michihisa Miyahara, Koichi Suzuki, Hiroyuki Sato
  • Publication number: 20090015076
    Abstract: There are provided a canned linear motor armature and a canned linear motor capable of reducing an interface by reducing a number of parts of constituting members of an armature winding portion, capable of firmly carrying out injection molding and filling without involving air bubbles or the like by promoting an operability of the injection molding and filling by adopting a low viscosity resin and having a high long period insulation reliability of the armature winding against a refrigerant. In a canned linear motor armature, a coil group comprising a plurality of formed coils (71c) is interposed by a wiring board (71a) and a resin-made frame (71b) in a bath tub shape to be subjected to injection molding of a resin, further, a wiring portion (71e) is injection-molded or filled by a resin having a viscosity equal to or smaller than 30 Pa┬Ěs, a usable time period of 0.1 through 24 hours, and an elastic modulus equal to or smaller than 3,000 MPa.
    Type: Application
    Filed: March 24, 2006
    Publication date: January 15, 2009
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Kenichi Sadakane, Toshikazu Hamao, Mitsuhiro Matsuzaki
  • Publication number: 20080097075
    Abstract: In a process for producing polyarylene sulfide, comprising: reacting an alkali sulfide source and an aromatic dihalide compound in a polar organic solvent to obtain a polymerizate slurry containing polyarylene sulfide particles, by-produced alkali metal salt fine particles and the polar organic solvent, and recovering the polyarylene sulfide particles washed from the polymerizate slurry; the polymerizate slurry is separated by sieving into the polyarylene sulfide particles and a slurry containing the alkali metal salt fine particles, and the separated polyarylene sulfide particles are subjected to a washing step wherein the polyarylene sulfides are introduced into a countercurrent washing apparatus enclosing a movable part and subjected therein to continuous countercurrent contact with a washing liquid. As a result, polyarylene sulfide particles of good quality are produced at a good yield, while pursuing process rationalization.
    Type: Application
    Filed: August 31, 2005
    Publication date: April 24, 2008
    Inventors: Mitsuhiro Matsuzaki, Katsumi Horikoshi, Masanori Kobayashi
  • Patent number: 7329971
    Abstract: A voice coil type linear motor with a cooling function. A closed magnetic circuit formed into the ?-shape, by an inner yoke provided between a pair of outer yokes made up of magnetic materials arranged in parallel with a longitudinal center axis in such a manner as to be in parallel with the pair of outer yokes. The outer yokes and side yokes are provided at both end portions of the inner yoke. Permanent magnets are provided on inner sides of the outer yokes and on outer sides of the inner yoke with polarities thereof which face opposite surfaces of the outer yoke. The inner yoke is made opposite to each other or with polarities thereof which face only the outer yokes being made opposite each other to thereby a field. An armature made up of a bobbin of non-magnetic and insulating materials is provided. A coil is provided around the bobbin between the permanent magnets via air gaps in such a manner as to move in an axial direction or in such a manner that. The coil is wound around the bobbin.
    Type: Grant
    Filed: June 5, 2003
    Date of Patent: February 12, 2008
    Assignee: Kabushiki Kaisha Yasakawa Denki
    Inventors: Haruki Yahara, Makoto Matsumoto, Mitsuhiro Koga, Mitsuhiro Matsuzaki
  • Publication number: 20070219281
    Abstract: A thermally foamable microsphere having a structure that a foaming agent is encapsulated in an outer shell formed from a polymer, wherein the foaming agent contains isododecane, and a production process of the thermally foamable microsphere by a suspension polymerization process using a polymerizable monomer and a foaming agent containing dodecane.
    Type: Application
    Filed: September 13, 2005
    Publication date: September 20, 2007
    Inventors: Tetsuo Ejiri, Mitsuhiro Matsuzaki, Shunzo Endo
  • Patent number: 7220817
    Abstract: A process for producing polyarylene sulfide includes: steps of reacting an aromatic dihalide compound and an alkaline metal compound in a polar organic solvent for polymerization under heating and cooling a system including the reaction mixture to recover particulate polyarylene sulfide (PAS). The system after the reaction is gradually cooled at an average cooling speed of 0.2 to 1.0 deg. C./min. selectively in a temperature range of from 1 deg. C. below to 1 deg. C. above a maximum system-viscosity temperature. As a result, the process can be operated at a relatively short polymerization cycle and yet provides the product PAS particles with a high and stable bulk density as to exhibit good processability in the transportation and storage, and excellent transportability in a hopper or a screw of an extruder or a molding machine.
    Type: Grant
    Filed: July 11, 2003
    Date of Patent: May 22, 2007
    Assignee: Kureha Corporation
    Inventors: Mitsuhiro Matsuzaki, Masaru Kagoshima
  • Patent number: 7094867
    Abstract: A polymerizate slurry obtained through a reaction of an alkali sulfide source and an aromatic dihalide compound in an organic polar solvent and comprising polyarylene sulfide particles, a by-produced alkali metal salt and the polar organic solvent, is continuously contacted countercurrently with a washing liquid, thereby continuously and efficiently recovering washed polyarylene sulfide particles. Furthermore, the by-produced alkali metal salt is removed, and the polar organic solvent is recovered, efficiently.
    Type: Grant
    Filed: November 29, 2002
    Date of Patent: August 22, 2006
    Assignee: Kureha Corporation
    Inventors: Michihisa Miyahara, Norio Saitou, Mitsuhiro Matsuzaki
  • Publication number: 20060074219
    Abstract: A dehydration step is conducted by heating a mixture containing an organic amide solvent and a sulfur source including an alkali metal hydrosulfide, and a part of an overall charged amount of an alkali metal hydroxide as needed. The mixture remaining within the system after the dehydration step is mixed with a dihalo-aromatic compound, the resultant mixture is heated to conduct a polymerization reaction, and the alkali metal hydroxide is added to the mixture for polymerization reaction continuously or in portions to control the pH of the mixture for polymerization reaction within a range of from 7 to 12.5 from the beginning to the end of the polymerization reaction. The poly(arylene sulfide) according to the present invention has a nitrogen content of at most 800 ppm.
    Type: Application
    Filed: January 21, 2004
    Publication date: April 6, 2006
    Inventors: Hirohito Kawama, Mitsuhiro Matsuzaki, Michihisa Miyahara, Koichi Suzuki, Hiroyuki Sato
  • Publication number: 20050215759
    Abstract: A process for producing polyarylene sulfide includes: steps of reacting an aromatic dihalide compound and an alkaline metal compound in a polar organic solvent for polymerization under heating and cooling a system including the reaction mixture to recover particulate polyarylene sulfide (PAS). The system after the reaction is gradually cooled at an average cooling speed of 0.2 to 1.0 deg. C./min. selectively in a temperature range of from 1 deg. C. below to 1 deg. C. above a maximum system-viscosity temperature. As a result, the process can be operated at a relatively short polymerization cycle and yet provides the product PAS particles with a high and stable bulk density as to exhibit good processability in the transportation and storage, and excellent transportability in a hopper or a screw of an extruder or a molding machine.
    Type: Application
    Filed: July 11, 2003
    Publication date: September 29, 2005
    Inventors: Mitsuhiro Matsuzaki, Masaru Kagoshima
  • Publication number: 20050206246
    Abstract: A small vacuum chamber is provided which needs no load lock chamber. In a voice coil type linear motor including a closed magnetic circuit formed into the ?-shape, by a pair of outer yokes (11), an inner yoke (12) and side yokes (13) and in which an armature is fixed to an inner side of the outer yoke (11), whereas permanent magnet sides are allowed to move, a coil (18) is wound around a bobbin (17), an exterior case 23 for the bobbin is constructed so as to make a coil portion watertight, and a fluid supply port and a fluid discharge port are provided either on the bobbin or on the case, whereby a cooling fluid is made to flow between the coil and the case so as to cool the coil directly.
    Type: Application
    Filed: June 5, 2003
    Publication date: September 22, 2005
    Inventors: Haruki Yahara, Makoto Matsumoto, Mitsuhiro Koga, Mitsuhiro Matsuzaki
  • Publication number: 20050087215
    Abstract: A polymerizate slurry obtained through a reaction of an alkali sulfide source and an aromatic dihalide compound in an organic polar solvent and comprising polyarylene sulfide particles, a by-produced alkali metal salt and the polar organic solvent, is continuously contacted countercurrently with a washing liquid, thereby continuously and efficiently recovering washed polyarylene sulfide particles. Furthermore, the by-produced alkali metal salt is removed, and the polar organic solvent is recovered, efficiently.
    Type: Application
    Filed: November 29, 2002
    Publication date: April 28, 2005
    Inventors: Michihisa Miyahara, Norio Saitou, Mitsuhiro Matsuzaki
  • Publication number: 20040249118
    Abstract: There is provided a method for producing a poly(arylene sulfide) in which a dihalo-aromatic compound and an alkali metal halide are polymerized by heating in an organic amide solvent, wherein the cooling time for the polymerization reaction system is significantly reduced. After the polymerization process, there is provided a cooling process for cooling the polymerization reaction system comprising a liquid phase containing the product poly (arylene sulfide) and the organic amide solvent and a vapor phase containing a gas component (A); and in the cooling process, the gas component (A) in the vapor phase is cooled while the content of a low boiling gas component (A1), which has a lower boiling point than water and exists in the gas component (A), is reduced in the vapor phase of the polymerization system.
    Type: Application
    Filed: March 25, 2004
    Publication date: December 9, 2004
    Inventors: Masaru Kagoshima, Mitsuhiro Matsuzaki
  • Patent number: 6540473
    Abstract: A robot vehicle for hot-line job for transmission and distribution lines which comprises an insulating boom formed of an insulating material at a tip end stage of multiple stage booms, a base end of which is supported on an elevated work vehicle to be capable of swinging, pivoting up and down, and extending and contracting, and a frame provided on the tip end of the insulating boom, the frame mounting thereon double arm manipulators of multishaft construction for performing a distribution work, a slide device for sliding independently these right and left double arm manipulators front to rear, and lifting arms of multishaft construction having a function of lifting a heavy article, so as to allow an operator to perform remote control. An electric actuator is used for driving the double arm manipulators and the slide device, and hydraulic manipulators for driving the lifting arms.
    Type: Grant
    Filed: June 13, 2001
    Date of Patent: April 1, 2003
    Assignees: Kabushiki Kaisha Yaskawa Denki, Kyushu Electric Power Co., Inc.
    Inventors: Hirofumi Inokuchi, Toshihide Tomiyama, Yoshihiro Yurita, Shinji Murai, Yusuke Hirano, Shinji Harada, Kengo Tsuruta, Youichi Motomura, Kazutoshi Imai, Yoshiaki Haga, Yoshikatsu Nakamura, Yukio Hashiguchi, Mitsuhiro Matsuzaki, Hiromichi Yamada, Akihiko Mishima, Yoshinaga Maruyama, Kyoji Yano, Moriyuki Nakashima, Osamu Yamashita
  • Publication number: 20010055525
    Abstract: A robot vehicle for hot-line job for transmission and distribution lines which comprises an insulating boom formed of an insulating material at a tip end stage of multiple stage booms, a base end of which is supported on an elevated work vehicle to be capable of swinging, pivoting up and down, and extending and contracting, and a frame provided on the tip end of the insulating boom, the frame mounting thereon double arm manipulators of multishaft construction for performing a distribution work, a slide device for sliding independently these right and left double arm manipulators front to rear, and lifting arms of multishaft construction having a function of lifting a heavy article, so as to allow an operator to perform remote control. An electric actuator is used for driving the double arm manipulators and the slide device, and hydraulic manipulators for driving the lifting arms.
    Type: Application
    Filed: June 13, 2001
    Publication date: December 27, 2001
    Applicant: Kabushiki Kaisha Yaskawa Denki
    Inventors: Hirofumi Inokuchi, Toshihide Tomiyama, Yoshihiro Yurita, Shinji Murai, Yusuke Hirano, Shinji Harada, Kengo Tsuruta, Youichi Motomura, Kazutoshi Imai, Yoshiaki Haga, Yoshikatsu Nakamura, Yukio Hashiguchi, Mitsuhiro Matsuzaki, Hiromichi Yamada, Akihiko Mishima, Yoshinaga Maruyama, Kyoji Yano, Moriyuki Nakashima, Osamu Yamashita
  • Patent number: 6325749
    Abstract: A robot vehicle for hot-line job for transmission and distribution lines which comprises an insulating boom formed of an insulating material at a tip end stage of multiple stage booms, a base end of which is supported on an elevated work vehicle to be capable of swinging, pivoting up and down, and extending and contracting, and a frame provided on the tip end of the insulating boom, the frame mounting thereon double arm manipulators of multishaft construction for performing a distribution work, a slide device for sliding independently these right and left double arm manipulators front to rear, and lifting arms of multishaft construction having a function of lifting a heavy article, so as to allow an operator to perform remote control. An electric actuator is used for driving the double arm manipulators and the slide device, and hydraulic manipulators for driving the lifting arms.
    Type: Grant
    Filed: May 17, 1999
    Date of Patent: December 4, 2001
    Assignees: Kabushiki Kaisha Yaskawa Denki, Kyushu Electric Power Co., Ltd.
    Inventors: Hirofumi Inokuchi, Toshihide Tomiyama, Yoshihiro Yurita, Shinji Murai, Yusuke Hirano, Shinji Harada, Kengo Tsuruta, Youichi Motomura, Kazutoshi Imai, Yoshiaki Haga, Yoshikatsu Nakamura, Yukio Hashiguchi, Mitsuhiro Matsuzaki, Hiromichi Yamada, Akihiko Mishima, Yoshinaga Maruyama, Kyoji Yano, Moriyuki Nakashima, Osamu Yamashita