Patents by Inventor Takayasu Fujiura

Takayasu Fujiura 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).

  • Patent number: 10099436
    Abstract: Provided are a process and an apparatus for producing a fiber-reinforced thermoplastic resin tape, the process and the apparatus being capable of preventing fiber cut from occurring at the start of production of the fiber-reinforced thermoplastic resin tape. The provided process includes a resin impregnation step of opening a fiber bundle and impregnating the fiber bundle with molten thermoplastic resin and a through-nozzle passing step of passing the fiber bundle having undergone the resin impregnation step through a slit formed in a nozzle. The through-nozzle passing step includes setting, at the start of production, a gap dimension of the slit to a dimension larger than a normal dimension and changing the gap dimension of the slit to the normal dimension when a predetermined condition is satisfied, after the production start.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: October 16, 2018
    Assignee: Kobe Steel, Ltd.
    Inventors: Naoyuki Tashiro, Takayasu Fujiura, Kazuya Takamura, Seiji Zenke
  • Publication number: 20180162073
    Abstract: An aspect of the present invention is a tape-shaped prepreg which includes a plurality of unidirectionally oriented fibers and a binder infiltrated into these fibers. The tape-shaped prepreg is characterized by having an average thickness of 50 ?m to 150 ?m and a content percentage of these fibers of 30 vol % to 60 vol %. The prepreg is further characterized in that: a fractal dimension D of a coefficient of variation Cv(n) is 0.4 to 1.5; and a degree of orientation P, expressed by the following equation, is 0.8 or greater and less than 1.0: Degree of orientation P=1?((minor-axis length of approximate ellipse)/(major-axis length thereof)).
    Type: Application
    Filed: May 18, 2016
    Publication date: June 14, 2018
    Applicant: KABUSHiKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.)
    Inventors: Takayasu FUJIURA, Naoyuki TASHIRO
  • Publication number: 20170252988
    Abstract: Provided are a process and an apparatus for producing a fiber-reinforced thermoplastic resin tape, the process and the apparatus being capable of preventing fiber cut from occurring at the start of production of the fiber-reinforced thermoplastic resin tape. The provided process includes a resin impregnation step of opening a fiber bundle and impregnating the fiber bundle with molten thermoplastic resin and a through-nozzle passing step of passing the fiber bundle having undergone the resin impregnation step through a slit formed in a nozzle. The through-nozzle passing step includes setting, at the start of production, a gap dimension of the slit to a dimension larger than a normal dimension and changing the gap dimension of the slit to the normal dimension when a predetermined condition is satisfied, after the production start.
    Type: Application
    Filed: August 17, 2015
    Publication date: September 7, 2017
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Naoyuki TASHIRO, Takayasu FUJIURA, Kazuya TAKAMURA, Seiji ZENKE
  • Publication number: 20170129155
    Abstract: Provided are a method and an apparatus for manufacturing a fiber-reinforced thermoplastic resin tape. The apparatus includes a resin impregnating device discharging a fiber bundle impregnated with a thermoplastic resin through a nozzle having an opening of a rectangular slit to form the fiber bundle into a tape shape, and a main cooling roller making contact with the fiber bundle having passed through the nozzle at a contact position to feed and cool it. With T (mm) being the dimension of the short sides of the slit and L (mm) being the distance between a tip of the nozzle and the contact position, the dimension T and the distance L satisfy either one of Expression (A) and Expression (B) below: L?1000×T?35; T<0.08??(A) L?785.7×T?17.9; T?0.08?? (B).
    Type: Application
    Filed: June 3, 2015
    Publication date: May 11, 2017
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Naoyuki TASHIRO, Takayasu FUJIURA, Yasuhiro SAKURAI
  • Patent number: 9522803
    Abstract: A method for connecting a tail end portion of a reinforcing fiber bundle of a preceding wound body to a front end portion of a reinforcing fiber bundle unwound from a new wound body by blowing pressurized air to both of the ends to unravel and entwine both of the reinforcing fiber bundles, wherein the method includes a preparation step for adjusting the amount of a sizing agent contained in the front end of the reinforcing fiber bundle unwound from the new wound body and the tail end of the preceding wound body to 4 wt % or less, and the reinforcing fiber bundles are connected after the preparation step.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: December 20, 2016
    Assignee: Kobe Steel, Ltd.
    Inventors: Hodaka Miura, Kazuya Takamura, Takayasu Fujiura, Naoyuki Tashiro, Seiji Zenke
  • Publication number: 20160107170
    Abstract: A process for producing an iron ore having a sulfur content reduced to 0.08% or less, which includes a step of subjecting an iron ore containing sulfur in an amount of more than 0.08% and 2% or less to a flotation. The flotation satisfies any one of the following (1) to (3): (1) a xanthate-based compound and a salt of an amine compound are used as collectors, (2) a xanthate-based compound is used as a collector and a substance which releases a sulfur ion in water is used as an activator, or (3) a xanthate-based compound and a salt of an amine compound are used as collectors and a substance which releases a sulfur ion in water is used as an activator.
    Type: Application
    Filed: June 23, 2014
    Publication date: April 21, 2016
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Eishi KUSAKA, Katsuyuki IIJIMA, Takayasu FUJIURA
  • Patent number: 9211654
    Abstract: To provide continuous fiber-reinforced thermoplastic pellets having a good dispersion property of a reinforcing fiber bundle in injection molded articles and capable of achieving a satisfactory outward appearance of the injection molded articles and satisfying a mechanical strength of the injection molded articles by fully exerting the reinforcing effect, and a manufacturing method of the same.
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: December 15, 2015
    Assignee: Kobe Steel, Ltd.
    Inventors: Naoyuki Tashiro, Atsushi Yamamoto, Takayasu Fujiura, Naoki Kikuchi
  • Patent number: 9011167
    Abstract: A busbar of the present invention increases yield per metal material in comparison to plate-shaped bus bars, enables provision of protrusions on a member located inside relative to a conductor, and enables formation of the busbar in a bent shape. The busbar of the present invention is provided with a busbar insulator (22), a busbar conductor (23), a busbar insulator (24), a busbar conductor (25), and a busbar insulator (26) formed outside of a busbar center conductor (21). These conductors and insulators are arranged alternately from the inner side towards the outer side in a radial direction (R) that intersects at right angles with the axial direction (A) of the bus bar. The busbar conductors (23, 25) are provided with openings (23o, 25o) along the whole length in the axial direction (A) thereof.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: April 21, 2015
    Assignee: Kobe Steel, Ltd.
    Inventors: Naoya Fujiwara, Akio Sugimoto, Hiroshi Hashimoto, Takayasu Fujiura, Naoki Kikuchi, Koji Inoue
  • Patent number: 8910690
    Abstract: An apparatus for manufacturing a continuous fiber-reinforced thermoplastic resin pellet includes a roving package constituted by a cylindrical package of a reinforcing fiber bundle, a reinforcing fiber bundle delivery device, an impregnation die, a withdrawing device disposed on a downstream side of the impregnation die, and a cutter member. The reinforcing fiber bundle delivery device includes a plurality of collapse suppressing members adapted to be pushed radially outwards against an inner periphery surface of the roving package to suppress collapse of winding layers and a pusher for displacing said plural collapse suppressing members radially outwards following the inner periphery surface of the roving package which inner periphery surface shifts radially outwards gradually as the reinforcing fiber bundle is drawn out in a successive manner.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: December 16, 2014
    Assignee: Kobe Steel, Ltd.
    Inventors: Naoyuki Tashiro, Takayasu Fujiura, Kaduya Takamura, Seiji Zenke
  • Patent number: 8597556
    Abstract: Disclosed is a method for producing long-fiber-reinforced thermoplastic resin pellets, comprising pultruding a plurality of reinforced fiber bundles in a molten thermoplastic resin while twisting the plurality reinforced fiber bundles to form a strand in which the reinforced fibers are coated with the thermoplastic resin, and cutting the strand to a predetermined length to form pellets, wherein the strand is pultruded under the conditions that the melt viscosity of the thermoplastic resin is adjusted such that the melt flow rate is 500 to 1500 g/10 min, and the twisting angle ? of the reinforced fiber bundles with respect to the pultruding direction of the strand is set as follows: 0°<??50°.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: December 3, 2013
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventor: Takayasu Fujiura
  • Patent number: 8500473
    Abstract: A projected end of a bus bar (20), including projection portions (21A, 22B, 23C, 24D, 25E, 26F), and a recessed connector (30), including a cylindrical portion (43A), a recess portion (31B), a cylindrical portion (42C), a recess portion (31D), a cylindrical portion (41E), and a recess portion (31F), are engaged with each other, thereby enabling the bus bar (20) and the connector (30) to electrically connect with each other. That is, only inserting the bus bar (20) into the connector (30) makes an electrical connection possible, so it is not necessary, for example, to fasten the terminal with a screw. Therefore, this facilitates the connection between the bus bar (20) and the connector (30).
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: August 6, 2013
    Assignee: Kobe Steel, Ltd.
    Inventors: Nagoya Fujiwara, Akio Sugimoto, Hiroshi Hashimoto, Takayasu Fujiura, Naoki Kikuchi, Koji Inoue
  • Publication number: 20130143426
    Abstract: A busbar of the present invention increases yield per metal material in comparison to plate-shaped bus bars, enables provision of protrusions on a member located inside relative to a conductor, and enables formation of the busbar in a bent shape. The busbar of the present invention is provided with a busbar insulator (22), a busbar conductor (23), a busbar insulator (24), a busbar conductor (25), and a busbar insulator (26) formed outside of a busbar center conductor (21). These conductors and insulators are arranged alternately from the inner side towards the outer side in a radial direction (R) that intersects at right angles with the axial direction (A) of the bus bar. The busbar conductors (23, 25) are provided with openings (23o, 25o) along the whole length in the axial direction (A) thereof.
    Type: Application
    Filed: September 27, 2011
    Publication date: June 6, 2013
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Naoya Fujiwara, Akio Sugimoto, Hiroshi Hashimoto, Takayasu Fujiura, Naoki Kikuchi, Koji Inoue
  • Publication number: 20120225149
    Abstract: An apparatus for manufacturing a continuous fiber-reinforced thermoplastic resin pellet includes a roving package constituted by a cylindrical package of a reinforcing fiber bundle, a reinforcing fiber bundle delivery device, an impregnation die, a withdrawing device disposed on a downstream side of the impregnation die, and a cutter member. The reinforcing fiber bundle delivery device includes a plurality of collapse suppressing members adapted to be pushed radially outwards against an inner periphery surface of the roving package to suppress collapse of winding layers and a pusher for displacing said plural collapse suppressing members radially outwards following the inner periphery surface of the roving package which inner periphery surface shifts radially outwards gradually as the reinforcing fiber bundle is drawn out in a successive manner.
    Type: Application
    Filed: May 14, 2012
    Publication date: September 6, 2012
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd)
    Inventors: Naoyuki Tashiro, Takayasu Fujiura, Kaduya Takamura, Seiji Zenke
  • Patent number: 8236127
    Abstract: A method and apparatus for manufacturing a continuous fiber-reinforced thermoplastic resin pellet are provided which can smoothly carry out a continuous drawing-out operation for a reinforcing fiber bundle (continuous fiber-reinforced resin strand). With respect to a terminal end of a reinforcing fiber bundle A of a roving package being exhausted and a front end of a reinforcing fiber bundle B of a new roving package, fiber quantity-halved end portions A1 and B1 each about half of the original fiber quantity are formed respectively, then reinforcing filaments in those fiber quantity-halved end portions are entangled by an air splicer to form an entangled portion C1, and reinforcing filaments in a portion downstream of the fiber quantity-halved end portion in the reinforcing fiber bundle B of the new roving package are entangled by an air splicer to form an entangled portion C2.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: August 7, 2012
    Assignee: Kobe Steel, Ltd.
    Inventors: Naoyuki Tashiro, Takayasu Fujiura, Kaduya Takamura, Seiji Zenke
  • Publication number: 20120148838
    Abstract: A method for connecting a tail end portion of a reinforcing fiber bundle of a preceding wound body to a front end portion of a reinforcing fiber bundle unwound from a new wound body by blowing pressurized air to both of the ends to unravel and entwine both of the reinforcing fiber bundles, wherein the method includes a preparation step for adjusting the amount of a sizing agent contained in the front end of the reinforcing fiber bundle unwound from the new wound body and the tail end of the preceding wound body to not less than 0 wt % and not more than 4 wt %, and the reinforcing fiber bundles are connected after the preparation step.
    Type: Application
    Filed: November 5, 2010
    Publication date: June 14, 2012
    Applicant: Kabushiki Kaisha Kobe Seiko(Kobe Steel Ltd.)
    Inventors: Hodaka Miura, Kazuya Takamura, Takayasu Fujiura, Naoyuki Tashiro, Seiji Zenke
  • Publication number: 20120146253
    Abstract: Disclosed is a method for producing long-fiber-reinforced thermoplastic resin pellets, comprising, pultruding a plurality of reinforced fiber bundles in a molten thermoplastic resin while twisting the plurality reinforced fiber bundles to form a strand in which the reinforced fibers are coated with the thermoplastic resin, and cutting the strand to a predetermined length to form pellets, wherein the strand is pultruded under the conditions that the melt viscosity of the thermoplastic resin is adjusted such that the melt flow rate is 500 to 1500 g/10 min, and the twisting angle ? of the reinforced fiber bundles with respect to the pultruding direction of the strand is set as follows: 0°<?<50°.
    Type: Application
    Filed: September 17, 2010
    Publication date: June 14, 2012
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd)
    Inventor: Takayasu Fujiura
  • Publication number: 20120094553
    Abstract: A projected end of a bus bar (20), including projection portions (21A, 22B, 23C, 24D, 25E, 26F), and a recessed connector (30), including a cylindrical portion (43A), a recess portion (31B), a cylindrical portion (42C), a recess portion (31D), a cylindrical portion (41E), and a recess portion (31F), are engaged with each other, thereby enabling the bus bar (20) and the connector (30) to electrically connect with each other. That is, only inserting the bus bar (20) into the connector (30) makes an electrical connection possible, so it is not necessary, for example, to fasten the terminal with a screw. Therefore, this facilitates the connection between the bus bar (20) and the connector (30).
    Type: Application
    Filed: June 3, 2010
    Publication date: April 19, 2012
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.,
    Inventors: Naoya Fujiwara, Akio Sugimoto, Hiroshi Hashimoto, Takayasu Fujiura, Naoki Kikuchi, Koji Inoue
  • Patent number: 7993737
    Abstract: The invention provides a natural fiber-reinforced thermoplastic resin injection molding having an excellent ability to discharge static electricity. The natural fiber-reinforced thermoplastic resin injection molding is obtained by injection-molding with using natural fiber-reinforced thermoplastic resin pellets as a molding feedstock containing natural fibers as reinforcing fibers, has a natural fiber content of from 20 to 60 wt %. The natural fibers have an average length of from 1.5 to 4.0 mm. The natural fiber-reinforced thermoplastic resin injection molding has an electrostatic voltage half-life, as determined by the half-life measurement method specified in JIS L 1094, of less than 40 seconds.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: August 9, 2011
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Tatsuya Tanaka, Takayasu Fujiura, Naoki Kikuchi, Naoyuki Tashiro, Atsushi Yamamoto, Tsutomu Nagaoka, Kentaro Okuno
  • Publication number: 20110001268
    Abstract: The invention provides a natural fiber-reinforced thermoplastic resin injection molding having an excellent ability to discharge static electricity. The natural fiber-reinforced thermoplastic resin injection molding is obtained by injection-molding with using natural fiber-reinforced thermoplastic resin pellets as a molding feedstock containing natural fibers as reinforcing fibers, has a natural fiber content of from 20 to 60 wt %. The natural fibers have an average length of from 1.5 to 4.0 mm. The natural fiber-reinforced thermoplastic resin injection molding has an electrostatic voltage half-life, as determined by the half-life measurement method specified in JIS L 1094, of less than 40 seconds.
    Type: Application
    Filed: November 26, 2008
    Publication date: January 6, 2011
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO
    Inventors: Tatsuya Tanaka, Takayasu Fujiura, Naoki Kikuchi, Naoyuki Tashiro, Atsushi Yamamoto, Tsutomu Nagaoka, Kentaro Okuno
  • Publication number: 20100310406
    Abstract: The present invention provides a method for producing a powder mixture for powder metallurgy, which allows production of a green compact having both high density and high lubricity (low demolding force). The method, according to the present invention, for producing a powder mixture for powder metallurgy including an iron-base powder, a mechanical characteristic-improving powder and a lubricant, the method includes the steps of: mixing the iron-base powder and/or the mechanical characteristic-improving powder with an amide-based lubricant solution; removing a solvent in the solution; and coating the surface of the iron-base powder and/or the mechanical characteristic-improving powder with an amide-based lubricant.
    Type: Application
    Filed: May 24, 2010
    Publication date: December 9, 2010
    Inventors: Takayasu Fujiura, Yoshihiro Ito