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).
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Patent number: 10106923Abstract: 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: GrantFiled: March 27, 2014Date of Patent: October 23, 2018Assignee: KURARAY CO., LTD.Inventors: Takayoshi Hosoya, Tomohiro Hayakawa, Hiroyuki Kawai, Hideo Hayashi
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Patent number: 10106716Abstract: 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: GrantFiled: November 20, 2013Date of Patent: October 23, 2018Assignee: KURARAY CO., LTD.Inventors: Kazumasa Kusudo, Hideo Hayashi, Yasuhiro Tsugita, Sigehiro Nieda
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Patent number: 10020124Abstract: 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: GrantFiled: June 25, 2015Date of Patent: July 10, 2018Assignee: KURARAY CO., LTD.Inventors: Tomohiro Hayakawa, Hiroyuki Kawai, Hideo Hayashi
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Patent number: 9748543Abstract: 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: GrantFiled: November 25, 2014Date of Patent: August 29, 2017Assignee: KURARAY CO., LTD.Inventors: Tomohiro Hayakawa, Hiroyuki Kawai, Hideo Hayashi, Koichi Kambe
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Patent number: 9711769Abstract: 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: GrantFiled: November 25, 2014Date of Patent: July 18, 2017Assignee: KURARAY CO., LTD.Inventors: Tomohiro Hayakawa, Hiroyuki Kawai, Hideo Hayashi, Koichi Kambe
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Patent number: 9343721Abstract: 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: GrantFiled: October 13, 2011Date of Patent: May 17, 2016Assignee: KURARAY CO., LTD.Inventors: Tomohiro Hayakawa, Takayoshi Hosoya, Hiroyuki Kawai, Hideo Hayashi, Yutaka Hayashi, Kohsuke Togashi, Naotaka Gotoh
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Publication number: 20160009895Abstract: 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: ApplicationFiled: September 18, 2015Publication date: January 14, 2016Applicant: KURARAY CO., LTD.Inventors: Ryo YAMAMOTO, Toshiaki Kobayashi, Hideo Hayashi
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Publication number: 20150299545Abstract: 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: ApplicationFiled: November 20, 2013Publication date: October 22, 2015Applicant: KURARAY CO., LTD.Inventors: Kazumasa KUSUDO, Hideo HAYASHI, Yasuhiro TSUGITA, Sigehiro NIEDA
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Publication number: 20150294801Abstract: 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: ApplicationFiled: June 25, 2015Publication date: October 15, 2015Applicant: KURARAY CO., LTD.Inventors: Tomohiro HAYAKAWA, Hiroyuki KAWAI, Hideo HAYASHI
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Publication number: 20150079479Abstract: 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: ApplicationFiled: November 25, 2014Publication date: March 19, 2015Applicant: KURARAY CO., LTD.Inventors: Tomohiro HAYAKAWA, Hiroyuki KAWAI, Hideo HAYASHI, Koichi KAMBE
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Patent number: 8865336Abstract: 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: GrantFiled: December 7, 2007Date of Patent: October 21, 2014Assignee: Kuraray Co., Ltd.Inventors: Tomohiro Hayakawa, Shinya Inada, Hideo Hayashi, Hiroyuki Kawai, Masakazu Nishiyama
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Patent number: 8802271Abstract: 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: GrantFiled: March 7, 2012Date of Patent: August 12, 2014Assignee: Kuraray Co., Ltd.Inventors: Tomohiro Hayakawa, Hideo Hayashi, Hideki Kamada, Takayoshi Hosoya, Hiroyuki Kawai
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Patent number: 8650922Abstract: 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: GrantFiled: June 1, 2011Date of Patent: February 18, 2014Assignee: Busyu Kogyo Co., Ltd.Inventor: Hideo Hayashi
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Publication number: 20130224557Abstract: 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: ApplicationFiled: October 13, 2011Publication date: August 29, 2013Applicant: KURARAY CO., LTD.Inventors: Tomohiro Hayakawa, Takayoshi Hosoya, Hiroyuki Kawai, Hideo Hayashi, Yutaka Hayashi, Kohsuke Togashi, Naotaka Gotoh
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Patent number: 8477480Abstract: 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: GrantFiled: April 14, 2010Date of Patent: July 2, 2013Assignee: Kuraray Co., Ltd.Inventors: Tomohiro Hayakawa, Hideo Hayashi, Taketoshi Okuno, Nozomu Sugoh, Hideki Kamada, Hiroyuki Kawai, Shinya Inada
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Publication number: 20130086962Abstract: 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: ApplicationFiled: June 1, 2011Publication date: April 11, 2013Applicant: BUSYU KOGYO CO., LTD.Inventor: Hideo Hayashi
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Publication number: 20120164514Abstract: 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: ApplicationFiled: March 7, 2012Publication date: June 28, 2012Applicant: KURARAY CO., LTD.Inventors: Tomohiro Hayakawa, Hideo Hayashi, Hideki Kamada, Takayoshi Hosoya, Hiroyuki Kawai
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Patent number: 7985473Abstract: 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: GrantFiled: December 3, 2009Date of Patent: July 26, 2011Assignee: Kuraray Co., Ltd.Inventors: Tomohiro Hayakawa, Hideo Hayashi, Masatoshi Takenoiri, Toshimitsu Harada
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Publication number: 20110036506Abstract: 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: ApplicationFiled: June 27, 2008Publication date: February 17, 2011Inventors: Masanao Sumita, Hideo Hayashi
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Publication number: 20100310921Abstract: 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: ApplicationFiled: December 7, 2007Publication date: December 9, 2010Applicant: Kuraray Co., Ltd.Inventors: Tomohiro Hayakawa, Shinya Inada, Hideo Hayashi, Hiroyuki Kawai, Masakazu Nishiyama