Patents by Inventor Hideo Hayashi

Hideo Hayashi 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: 10106923
    Abstract: Provided is an extra-fine fiber sheet including an extra-fine fiber assembly including extra-fine fibers having an average fiber diameter of 500 nm or smaller. The extra-fine fiber sheet includes an extra-fine fiber assembly. The assembly includes a solvent-spinnable polymer (A) having a weight average molecular weight of 5,000 to 100,000 as a main component and a polymer (B) having a weight average molecular weight equal to or more than 10 times as large as that of the polymer (A) as an accessory component; and the assembly includes constituent fibers having an average fiber diameter of 10 to 500 nm. The polymer (A) may be a non-conductive polymer, and the polymer (B) may be a thickening polymer.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: October 23, 2018
    Assignee: KURARAY CO., LTD.
    Inventors: Takayoshi Hosoya, Tomohiro Hayakawa, Hiroyuki Kawai, Hideo Hayashi
  • Patent number: 10106716
    Abstract: Provided is a dust scatter preventing agent capable of preventing scattering of dust for a long period of time, by improving the strength of a coating layer formed on a surface of a tailing at a tailing accumulation site. A dust scatter preventing agent comprising an aqueous solution or aqueous dispersion that includes a hydrophilic polymer such as polyvinyl alcohol or a synthetic resin emulsion that has a property of being solidified and that has a contact angle with water of 45 degrees to 78 degrees, and an insoluble fiber material such as vinylon that has a cut length that is within a range of 0.5 mm to 30 mm, and a fineness that is within a range of 0.1 dtex to 20 dtex, with an amount of the insoluble fiber material with respect to the hydrophilic polymer being 0.1 to 1 by mass ratio, is spread over a surface of an object that includes fine particles having a particle size of 100 ?m or less and hardened to form a coating layer on the surface of the object.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: October 23, 2018
    Assignee: KURARAY CO., LTD.
    Inventors: Kazumasa Kusudo, Hideo Hayashi, Yasuhiro Tsugita, Sigehiro Nieda
  • Patent number: 10020124
    Abstract: A separator for electric double layer capacitor comprising a fiber sheet containing 10% by mass (relative to 100% by mass of fiber sheet) of polyvinyl alcohol fibers (fibers A) having a hot water-dissolving temperature of lower than 100° C. and higher than 85° C., the separator having a density within a range of 0.25 to 0.7 g/cm3, and a thickness within a range of not less than 5 ?m and less than 40 ?m.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: July 10, 2018
    Assignee: KURARAY CO., LTD.
    Inventors: Tomohiro Hayakawa, Hiroyuki Kawai, Hideo Hayashi
  • Patent number: 9748543
    Abstract: Provided are a separator for a nonaqueous cell that has air permeability and is small in thickness while maintaining strength properties; and a nonaqueous cell having this separator. The separator includes a fiber sheet in which a polyvinyl alcohol fiber is incorporated in a proportion of 30% or more by mass (based on the fiber sheet). The fiber has a fiber breaking temperature in heated water of lower than 100° C. and higher than 85° C.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: August 29, 2017
    Assignee: KURARAY CO., LTD.
    Inventors: Tomohiro Hayakawa, Hiroyuki Kawai, Hideo Hayashi, Koichi Kambe
  • Patent number: 9711769
    Abstract: Provided are a separator for a nonaqueous cell that has air permeability and is small in thickness while maintaining strength properties; and a nonaqueous cell having this separator. The separator includes a fiber sheet in which a polyvinyl alcohol fiber is incorporated in a proportion of 30% or more by mass (based on the fiber sheet). The fiber has a fiber breaking temperature in heated water of lower than 100° C. and higher than 85° C.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: July 18, 2017
    Assignee: KURARAY CO., LTD.
    Inventors: Tomohiro Hayakawa, Hiroyuki Kawai, Hideo Hayashi, Koichi Kambe
  • Patent number: 9343721
    Abstract: Provided is a separator for non-aqueous batteries, capable of being usefully used in non-aqueous batteries, and a non-aqueous battery equipped with this separator. The separator for non-aqueous batteries includes: a base layer comprising a fiber aggregate, and an electrolyte-swellable resin layer formed on at least one surface of the base layer, the resin layer comprising a urethane resin (C) obtained by reacting a polyol (A) including a vinyl polymer (a1) and a polyether polyol (a2) with a polyisocyanate (B). The vinyl polymer (a1) has as a main chain a vinyl polymer (a1?) having two hydroxyl groups at one of the termini of the main chain, and a polyoxyethylene chain having a number average molecular weight of 200 to 800 as a side chain, the percentage of the polyoxyethylene chain based on the vinyl polymer (a1) being within the range of 70 mass % to 98 mass %.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: May 17, 2016
    Assignee: KURARAY CO., LTD.
    Inventors: Tomohiro Hayakawa, Takayoshi Hosoya, Hiroyuki Kawai, Hideo Hayashi, Yutaka Hayashi, Kohsuke Togashi, Naotaka Gotoh
  • Publication number: 20160009895
    Abstract: Polyvinyl alcohol fibers containing: 0.05% by mass of an antioxidant composed of an inorganic or organic water soluble salt of at least one metal selected from the group consisting of manganese, copper, iron, nickel, cobalt, and zinc; and a boron compound that acts as a chelating agent for the antioxidant, the boron compound being contained in the fiber with a proportion in % by mass of 0.5% or more relative to the antioxidant.
    Type: Application
    Filed: September 18, 2015
    Publication date: January 14, 2016
    Applicant: KURARAY CO., LTD.
    Inventors: Ryo YAMAMOTO, Toshiaki Kobayashi, Hideo Hayashi
  • Publication number: 20150299545
    Abstract: Provided is a dust scatter preventing agent capable of preventing scattering of dust for a long period of time, by improving the strength of a coating layer formed on a surface of a tailing at a tailing accumulation site. A dust scatter preventing agent comprising an aqueous solution or aqueous dispersion that includes a hydrophilic polymer such as polyvinyl alcohol or a synthetic resin emulsion that has a property of being solidified and that has a contact angle with water of 45 degrees to 78 degrees, and an insoluble fiber material such as vinylon that has a cut length that is within a range of 0.5 mm to 30 mm, and a fineness that is within a range of 0.1 dtex to 20 dtex, with an amount of the insoluble fiber material with respect to the hydrophilic polymer being 0.1 to 1 by mass ratio, is spread over a surface of an object that includes fine particles having a particle size of 100 ?m or less and hardened to form a coating layer on the surface of the object.
    Type: Application
    Filed: November 20, 2013
    Publication date: October 22, 2015
    Applicant: KURARAY CO., LTD.
    Inventors: Kazumasa KUSUDO, Hideo HAYASHI, Yasuhiro TSUGITA, Sigehiro NIEDA
  • Publication number: 20150294801
    Abstract: A separator for electric double layer capacitor comprising a fiber sheet containing 10% by mass (relative to 100% by mass of fiber sheet) of polyvinyl alcohol fibers (fibers A) having a hot water-dissolving temperature of lower than 100° C. and higher than 85° C., the separator having a density within a range of 0.25 to 0.7 g/cm3, and a thickness within a range of not less than 5 ?m and less than 40 ?m.
    Type: Application
    Filed: June 25, 2015
    Publication date: October 15, 2015
    Applicant: KURARAY CO., LTD.
    Inventors: Tomohiro HAYAKAWA, Hiroyuki KAWAI, Hideo HAYASHI
  • Publication number: 20150079479
    Abstract: Provided are a separator for a nonaqueous cell that has air permeability and is small in thickness while maintaining strength properties; and a nonaqueous cell having this separator. The separator includes a fiber sheet in which a polyvinyl alcohol fiber is incorporated in a proportion of 30% or more by mass (based on the fiber sheet). The fiber has a fiber breaking temperature in heated water of lower than 100° C. and higher than 85° C.
    Type: Application
    Filed: November 25, 2014
    Publication date: March 19, 2015
    Applicant: KURARAY CO., LTD.
    Inventors: Tomohiro HAYAKAWA, Hiroyuki KAWAI, Hideo HAYASHI, Koichi KAMBE
  • Patent number: 8865336
    Abstract: Provided is a separator for alkaline batteries which can not only prevent batteries from internal short circuit by inhibiting the dendrite formation at anode, but also enables to have a low electrical resistance. The separator for alkaline batteries comprises a composite sheet in which a base layer comprising a wet-type nonwoven material formed from alkaline resistant fibers is covered with a nanofiber layer comprising a modified polyvinyl alcohol fiber which has a fiber diameter of 10 to 1000 nm and a liquid absorption amount by fibers of 4.0 to 40.0 g/g after immersion in a 35% aqueous solution of KOH.
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: October 21, 2014
    Assignee: Kuraray Co., Ltd.
    Inventors: Tomohiro Hayakawa, Shinya Inada, Hideo Hayashi, Hiroyuki Kawai, Masakazu Nishiyama
  • Patent number: 8802271
    Abstract: Provided is a separator for non-aqueous batteries not only having shutdown property but also achieving both higher output and short-circuit resistance. The separator comprising a laminate comprising: a low melting-point polymer fiber layer (A) having a melting point of 100 to 200° C., the low melting-point polymer fiber layer (A) comprising nanofibers having a fiber diameter of 1000 nm or smaller and formed from the low melting-point polymer; and a heat-resistant polymer fiber layer (B) positioned on the low melting-point polymer fiber layer (A) and comprising a high melting-point polymer having a melting point over 200° C. or a heat infusible polymer, the heat-resistant polymer fiber layer (B) comprising a mixture of nanofibers having a fiber diameter of 1000 nm or smaller and non-nanofibers having a fiber diameter over 1000 nm and both formed from heat-resistant polymer.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: August 12, 2014
    Assignee: Kuraray Co., Ltd.
    Inventors: Tomohiro Hayakawa, Hideo Hayashi, Hideki Kamada, Takayoshi Hosoya, Hiroyuki Kawai
  • Patent number: 8650922
    Abstract: Provided are a pipe bender which is capable of spiral pipe bending and a method for spiral pipe bending with radii of bend using the pipe bender. The pipe bender includes an XY sliding mechanism), which has a Y-axis movement means travelling back and forth and an X-axis movement means travelling from side to side; a turning table device for rotating a turning table provided on top thereof, the turning table device being placed on the XY sliding mechanism; a bender with a cylindrical shaft rotatably supported, the cylindrical shaft placed on the turning table and secured to a worm wheel; a center shaft passing through the hole of the cylindrical shaft and having a lower end secured to a bottom; and a bending roller provided on top of the cylindrical shaft rotatable about the center of a support roller and which is disposed adjacent to the support roller.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: February 18, 2014
    Assignee: Busyu Kogyo Co., Ltd.
    Inventor: Hideo Hayashi
  • Publication number: 20130224557
    Abstract: Provided is a separator for non-aqueous batteries, capable of being usefully used in non-aqueous batteries, and a non-aqueous battery equipped with this separator. The separator for non-aqueous batteries includes: a base layer comprising a fiber aggregate, and an electrolyte-swellable resin layer formed on at least one surface of the base layer, the resin layer comprising a urethane resin (C) obtained by reacting a polyol (A) including a vinyl polymer (a1) and a polyether polyol (a2) with a polyisocyanate (B). The vinyl polymer (a1) has as a main chain a vinyl polymer (a1?) having two hydroxyl groups at one of the termini of the main chain, and a polyoxyethylene chain having a number average molecular weight of 200 to 800 as a side chain, the percentage of the polyoxyethylene chain based on the vinyl polymer (a1) being within the range of 70 mass % to 98 mass %.
    Type: Application
    Filed: October 13, 2011
    Publication date: August 29, 2013
    Applicant: KURARAY CO., LTD.
    Inventors: Tomohiro Hayakawa, Takayoshi Hosoya, Hiroyuki Kawai, Hideo Hayashi, Yutaka Hayashi, Kohsuke Togashi, Naotaka Gotoh
  • Patent number: 8477480
    Abstract: Laminates including a nanofiber layer and a base layer, the nanofiber layer comprising polyamide filaments formed from a polyamide (a) and having an average fiber diameter of 10 to 1000 nm, and the base layer comprising fibers at least including polyamide fibers formed from a polyamide (a), where the polyamide (a) comprises a dicarboxylic acid unit and a diamine unit and where (i) the dicarboxylic acid unit comprising a terephthalic acid unit in the proportion of not lower than 60% by mole, and (ii) the diamine unit comprising at least one diamine unit selected from the group consisting of 1,9-nonanediamine unit and 2-methyl-1,8-octanediamine unit in the proportion of not lower than 60% by mole in total are provided, as well as separators for capacitors including the laminates.
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: July 2, 2013
    Assignee: Kuraray Co., Ltd.
    Inventors: Tomohiro Hayakawa, Hideo Hayashi, Taketoshi Okuno, Nozomu Sugoh, Hideki Kamada, Hiroyuki Kawai, Shinya Inada
  • Publication number: 20130086962
    Abstract: Provided are a pipe bender which is capable of spiral pipe bending and a method for spiral pipe bending with radii of bend using the pipe bender. The pipe bender includes an XY sliding mechanism), which has a Y-axis movement means travelling back and forth and an X-axis movement means travelling from side to side; a turning table device for rotating a turning table provided on top thereof, the turning table device being placed on the XY sliding mechanism; a bender with a cylindrical shaft rotatably supported, the cylindrical shaft placed on the turning table and secured to a worm wheel; a center shaft passing through the hole of the cylindrical shaft and having a lower end secured to a bottom; and a bending roller provided on top of the cylindrical shaft rotatable about the center of a support roller and which is disposed adjacent to the support roller.
    Type: Application
    Filed: June 1, 2011
    Publication date: April 11, 2013
    Applicant: BUSYU KOGYO CO., LTD.
    Inventor: Hideo Hayashi
  • Publication number: 20120164514
    Abstract: Provided is a separator for non-aqueous batteries not only having shutdown property but also achieving both higher output and short-circuit resistance. The separator comprising a laminate comprising: a low melting-point polymer fiber layer (A) having a melting point of 100 to 200° C., the low melting-point polymer fiber layer (A) comprising nanofibers having a fiber diameter of 1000 nm or smaller and formed from the low melting-point polymer; and a heat-resistant polymer fiber layer (B) positioned on the low melting-point polymer fiber layer (A) and comprising a high melting-point polymer having a melting point over 200° C. or a heat infusible polymer, the heat-resistant polymer fiber layer (B) comprising a mixture of nanofibers having a fiber diameter of 1000 nm or smaller and non-nanofibers having a fiber diameter over 1000 nm and both formed from heat-resistant polymer.
    Type: Application
    Filed: March 7, 2012
    Publication date: June 28, 2012
    Applicant: KURARAY CO., LTD.
    Inventors: Tomohiro Hayakawa, Hideo Hayashi, Hideki Kamada, Takayoshi Hosoya, Hiroyuki Kawai
  • Patent number: 7985473
    Abstract: Provided is a planar paper for an adhesive tape, and an adhesive tape utilizing such planar paper as a backing, which has an elongation sufficient to allow the adhesive tape to be favorably adhered to an adherend surface without being accompanied by any lift and separation, but with consistently conforming to the curved surfaces and/or the rough surfaces; which is capable of providing a clear painting line left in a portion of a painted layer required in automobiles; which is capable of being easily cut by hand without requiring any tool as a blade; and which is also excellent in handleability. The planar paper comprises a polyvinyl alcohol-series fiber having a fiber breaking temperature in water of 92 to 125° C., a tenacity of 0.5 to 3.5 cN/dtex at 10% elongation, and a breaking elongation of 17 to 60%.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: July 26, 2011
    Assignee: Kuraray Co., Ltd.
    Inventors: Tomohiro Hayakawa, Hideo Hayashi, Masatoshi Takenoiri, Toshimitsu Harada
  • Publication number: 20110036506
    Abstract: The objective of the present invention is to realize a system in which a resist stripper liquid used in resist stripping is regulated so as to have a resist component concentration within a certain concentration range even when the resist stripper liquid is continuously used for a long time without replacing it. In stripping a positive resist with a stripper liquid, the resist components dissolving in the stripper liquid can be diminished by cross-flow filtration with a specific ceramic filter (5). In the resist stripping system, a resist-component-containing stripper liquid resulting from a stripping step is treated in a filtration step, and the resultant concentrated stripper liquid having a heightened resist-component concentration is suitably discharged from the system. A fresh stripper liquid is suitably added to the stripper liquid from which the resist components have been removed, and the resultant stripper liquid is reused in the stripping step.
    Type: Application
    Filed: June 27, 2008
    Publication date: February 17, 2011
    Inventors: Masanao Sumita, Hideo Hayashi
  • Publication number: 20100310921
    Abstract: Provided is a separator for alkaline batteries which can not only prevent batteries from internal short circuit by inhibiting the dendrite formation at anode, but also enables to have a low electrical resistance. The separator for alkaline batteries comprises a composite sheet in which a base layer comprising a wet-type nonwoven material formed from alkaline resistant fibers is covered with a nanofiber layer comprising a modified polyvinyl alcohol fiber which has a fiber diameter of 10 to 1000 nm and a liquid absorption amount by fibers of 4.0 to 40.0 g/g after immersion in a 35% aqueous solution of KOH.
    Type: Application
    Filed: December 7, 2007
    Publication date: December 9, 2010
    Applicant: Kuraray Co., Ltd.
    Inventors: Tomohiro Hayakawa, Shinya Inada, Hideo Hayashi, Hiroyuki Kawai, Masakazu Nishiyama