Patents by Inventor Ryuji Shikuri
Ryuji Shikuri 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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Publication number: 20230009350Abstract: The sheet material according to the present invention has a polymer elastic body and a fibrous base material comprising ultrafine fibers, wherein the average single fiber diameter of the ultrafine fibers is 0.1 µm to 10.0 µm, the polymer elastic body has a hydrophilic group and an N-acylurea bond and/or an isourea bond, and the following conditions are satisfied : the longitudinal stiffness, in accordance with method A (45° cantilever method) in the text of “8.21 Stiffness” of JIS L 1096:2010 “Testing Methods for Woven and Knitted Fabrics”, is 40 mm to 140 mm ; and after immersion for 24 hours in N,N-dimethylformamide, the following are obtained in wear testing using a pressing load of 12.0 kPa and 20,000 friction cycles in accordance with method E (Martindale method) in the text of “8.19 Wear Strength and Friction Discoloration” of JIS L 1096:2010 “Testing Methods for Woven and Knitted Fabrics”: a grade of at least 4 and a wear loss of not more than 25 mg.Type: ApplicationFiled: December 10, 2020Publication date: January 12, 2023Applicant: Toray Industries, Inc.Inventors: Koki Ishii, Ryuji Shikuri, Takuya Shibano
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Publication number: 20220380976Abstract: The purpose of the present invention is to provide: a sheet-like article which has a good balance between soft texture and excellent light resistance; and a method for producing this sheet-like article. In order to achieve this purpose, a sheet-like article according to the present invention has the following configuration. Specifically, a sheet-like article which contains a polymer elastic body in a fibrous base material, wherein: the fibrous base material is composed of ultrafine fibers that have an average single fiber diameter of from 0.1 ?m to 10 ?m; the polymer elastic body has a hydrophilic group, while containing a polyether diol as a constituent; the polymer elastic body internally has an N-acylurea bond and/or an isourea bond; and the condition 1 and the condition 2 described below are satisfied. Condition 1: The bending resistance in the lengthwise direction as determined in accordance with specific standards is from 40 mm to 140 mm.Type: ApplicationFiled: December 10, 2020Publication date: December 1, 2022Applicant: Toray Industries, Inc.Inventors: Takuya Shibano, Ryuji Shikuri, Koki Ishii
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Patent number: 11441260Abstract: The present invention provides a sheet-like material in which a plant-derived raw material of low environmental impact is used. The invention also provides a sheet-like material that ideally has a uniform and refined nap and a sheet-like material that is strong, has excellent shape stability, is lightweight and is very pliable. This sheet-like material is characterized in being made of nonwoven fabric that is made of polyester microfiber containing a 1,2-propanediol-derived component in an amount prescribed in the present application and a polyurethane elastomer resin containing structural monomers prescribed in the present application.Type: GrantFiled: March 27, 2018Date of Patent: September 13, 2022Assignee: TORAY INDUSTRIES, INC.Inventors: Takanori Furui, Makoto Kaneko, Ryuji Shikuri, Gen Koide, Hirohito Yamamoto, Makoto Nishimura, Jun Yoshida
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Patent number: 11441033Abstract: The present invention provides a sheet-like material having soft texture, durability capable of withstanding practical use, and abrasion resistance. The sheet-like material of the present invention is a sheet-like material containing a nonwoven fabric composed of an ultrafine fiber having an average single fiber diameter 0.Type: GrantFiled: February 6, 2018Date of Patent: September 13, 2022Assignee: TORAY INDUSTRIES, INC.Inventors: Ryuji Shikuri, Makoto Nishimura, Yukihiro Matsuzaki, Satoshi Yanagisawa
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Publication number: 20220186431Abstract: A purpose of the present invention is to provide a sheet-shaped article and a manufacturing method therefor, said sheet-shaped article demonstrating both a supple texture and superior wear resistance. In order to achieve this purpose, a sheet-shaped article according to the present invention is a sheet-shaped article that includes, in a fibrous base material, a polymer elastic body with a hydrophilic group, said fibrous base material comprising extremely fine fibers with an average individual fiber fineness of 0.1 ?m to 10 ?m, wherein the sheet-shaped article has N-acylurea bonding or isourea bonding within the polymer elastic body, and a monovalent positive ion-including inorganic salt is present at a rate of 0.1 mass % to 5 mass % with regard to the mass of the polymer elastic body.Type: ApplicationFiled: March 19, 2020Publication date: June 16, 2022Applicant: Toray Industries, Inc.Inventors: Ryuji Shikuri, Koki Ishii, Takuya Shibano
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Publication number: 20200095725Abstract: The present invention provides a sheet-like material in which a plant-derived raw material of low environmental impact is used. The invention also provides a sheet-like material that ideally has a uniform and refined nap and a sheet-like material that is strong, has excellent shape stability, is lightweight and is very pliable. This sheet-like material is characterized in being made of nonwoven fabric that is made of polyester microfiber containing a 1,2-propanediol-derived component in an amount prescribed in the present application and a polyurethane elastomer resin containing structural monomers prescribed in the present application.Type: ApplicationFiled: March 27, 2018Publication date: March 26, 2020Applicant: Toray Industries, Inc.Inventors: Takanori Furui, Makoto Kaneko, Ryuji Shikuri, Gen Koide, Hirohito Yamamoto, Makoto Nishimura, Jun Yoshida
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Publication number: 20190375935Abstract: The present invention provides a sheet-like material having soft texture, durability capable of withstanding practical use, and abrasion resistance. The sheet-like material of the present invention is a sheet-like material containing a nonwoven fabric composed of an ultrafine fiber having an average single fiber diameter 0.Type: ApplicationFiled: February 6, 2018Publication date: December 12, 2019Applicant: Toray Industries, Inc.Inventors: Ryuji Shikuri, Makoto Nishimura, Yukihiro Matsuzaki, Satoshi Yanagisawa
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Publication number: 20190368124Abstract: The present invention provide a sheet-like material having a highly soft texture, and further having high crease resistance while being soft. The sheet-like material of the present invention is a sheet-like material which includes a nonwoven fabric containing ultrafine fibers having an average single fiber diameter of 0.3 to 7 ?m, and an elastomer, and having nap on a surface, in which the elastomer has a porous structure, and the porous structure has a proportion of micropores with a pore size of 0.1 to 20 ?m of 60% or more in all pores.Type: ApplicationFiled: December 25, 2017Publication date: December 5, 2019Applicant: Toray Industries, Inc.Inventors: Takanori Furui, Ryuji Shikuri, Gen Koide