Patents by Inventor Yoshitomo Matsumoto
Yoshitomo Matsumoto 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: 11929501Abstract: A method for producing a positive electrode active material for a non-aqueous electrolyte secondary battery. The method includes providing a composition containing a first lithium transition metal composite oxide having a 50% particle size 1D50 in a first volume cumulative particle size distribution of 0.1 ?m or more and less than 3.2 ?m and a first liquid medium; and granulating the composition to obtain a second lithium transition metal composite oxide having a 50% particle size 2D50 in a second volume cumulative particle size distribution greater than 1D50. The second lithium transition metal composite oxide has a ratio of a 90% particle size 3D90 in a third volume cumulative particle size distribution measured after the ultrasonic treatment to a 90% particle size 2D90 in the second volume cumulative particle size distribution measured before the ultrasonic treatment (3D90/2D90) of 0.53 or less.Type: GrantFiled: September 29, 2021Date of Patent: March 12, 2024Assignee: NICHIA CORPORATIONInventors: Hayaki Matsumoto, Yoshitomo Miyashita
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Patent number: 11198957Abstract: A fabric for arc-protective garments includes first yarns and second yarns different from the first yarns. The first yarns include first modacrylic fibers, and the first modacrylic fibers contain an infrared absorber in an amount of 2.5 wt % or more with respect to a total weight of the first modacrylic fibers. The weight of the infrared absorber per unit area in the fabric for arc-protective garments is 0.05 oz/yd2 or more. An arc-protective garment includes the fabric for arc-protective garments.Type: GrantFiled: August 30, 2018Date of Patent: December 14, 2021Assignee: KANEKA CORPORATIONInventors: Motohiro Sato, Yoshitomo Matsumoto, Tatsuro Ohzeki, Wataru Mio, Yasunori Tanaka, Yuto Utsunomiya, Tomoya Matsushima
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Patent number: 10450679Abstract: A flame-retardant fabric may include a cellulosic fiber and a modacrylic fiber, the cellulosic fiber being a natural cellulose fiber containing a phosphorus compound, the modacrylic fiber containing an antimony compound, the flame-retardant fabric including the modacrylic fiber containing the antimony compound in an amount of 14 to 54 wt %, antimony in an amount of not less than 1.7 wt %, and phosphorus in an amount of 0.3 to 1.5 wt % with respect to the total weight of the flame-retardant fabric, and the flame-retardant fabric having a weight per unit area of not less than 160 g/m2. The flame-retardant fabric can be produced by subjecting a fabric including a natural cellulose fiber and a modacrylic fiber containing an antimony compound to flame-retardant treatment with a phosphorus compound.Type: GrantFiled: August 22, 2014Date of Patent: October 22, 2019Assignee: KANEKA CORPORATIONInventors: Yoshitomo Matsumoto, Tatsuro Ohzeki, Fukashi Shibuya, Kazuya Kusunoki
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Publication number: 20180371647Abstract: A fabric for arc-protective garments includes first yarns and second yarns different from the first yarns. The first yarns include first modacrylic fibers, and the first modacrylic fibers contain an infrared absorber in an amount of 2.5 wt % or more with respect to a total weight of the first modacrylic fibers. The weight of the infrared absorber per unit area in the fabric for arc-protective garments is 0.05 oz/yd2 or more. An arc-protective garment includes the fabric for arc-protective garments.Type: ApplicationFiled: August 30, 2018Publication date: December 27, 2018Applicant: Kaneka CorporationInventors: Motohiro Sato, Yoshitomo Matsumoto, Tatsuro Ohzeki, Wataru Mio, Yasunori Tanaka, Yuto Utsunomiya, Tomoya Matsushima
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Patent number: 9637841Abstract: A fiber for artificial hair that has an improved appearance with a suppressed gloss is obtained by combining regenerated collagen fibers having different shapes in cross section. An artificial hair product using the same is provided. The fiber for artificial hair according to the present invention is obtained by combining fibers having different shapes in cross section. The fiber for artificial hair includes regenerated collagen fibers, and the regenerated collagens fibers include at least two types of regenerated collagen fibers whose cross-sectional shapes are selected from the group consisting of shapes including an elliptical shape, a circular shape, and a multifoil shape. The artificial hair product of the present invention includes the above-described fiber for artificial hair.Type: GrantFiled: July 8, 2009Date of Patent: May 2, 2017Assignee: KANEKA CORPORATIONInventors: Yoshitomo Matsumoto, Shin Sudo, Mitsuru Furukawa, Kazuaki Fujiwara, Masahiko Mihoichi
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Publication number: 20160201236Abstract: A flame-retardant fabric may include a cellulosic fiber and a modacrylic fiber, the cellulosic fiber being a natural cellulose fiber containing a phosphorus compound, the modacrylic fiber containing an antimony compound, the flame-retardant fabric including the modacrylic fiber containing the antimony compound in an amount of 14 to 54 wt %, antimony in an amount of not less than 1.7 wt %, and phosphorus in an amount of 0.3 to 1.5 wt % with respect to the total weight of the flame-retardant fabric, and the flame-retardant fabric having a weight per unit area of not less than 160 g/m2. The flame-retardant fabric can be produced by subjecting a fabric including a natural cellulose fiber and a modacrylic fiber containing an antimony compound to flame-retardant treatment with a phosphorus compound.Type: ApplicationFiled: August 22, 2014Publication date: July 14, 2016Inventors: Yoshitomo MATSUMOTO, Tatsuro OHZEKI, Fukashi SHIBUYA, Kazuya KUSUNOKI
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Patent number: 9205422Abstract: Provided is an ion-exchange fiber including a polymer A obtained by introducing an ion-exchangeable substituent to 100 parts by weight of an acrylic polymer that is obtained by polymerization of a monomer composition containing 30 % by weight or more of acrylonitrile with respect to 100 % by weight of the composition and a polymer B obtained by introducing an ion-exchangeable substituent to 1 part by weight or more and 100 parts by weight or less of an epoxy group-containing polymer. Each ion-exchangeable substituent is introduced by reaction with an amine compound and is an ion-exchangeable substituent derived from the amine compound. A method for producing the ion-exchange fiber is also provided.Type: GrantFiled: April 27, 2012Date of Patent: December 8, 2015Assignee: KANEKA CORPORATIONInventors: Yusuke Hirai, Wataru Mio, Masanobu Tamura, Yoshitomo Matsumoto, Takao Michinobu
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Publication number: 20140048489Abstract: Provided is an ion-exchange fiber including a polymer A obtained by introducing an ion-exchangeable substituent to 100 parts by weight of an acrylic polymer that is obtained by polymerization of a monomer composition containing 30% by weight or more of acrylonitrile with respect to 100% by weight of the composition and a polymer B obtained by introducing an ion-exchangeable substituent to 1 part by weight or more and 100 parts by weight or less of an epoxy group-containing polymer. Each ion-exchangeable substituent is introduced by reaction with an amine compound and is an ion-exchangeable substituent derived from the amine compound. A method for producing the ion-exchange fiber is also provided.Type: ApplicationFiled: April 27, 2012Publication date: February 20, 2014Applicant: KANEKA CORPORATIONInventors: Yusuke Hirai, Wataru Mio, Masanobu Tamura, Yoshitomo Matsumoto, Takao Michinobu
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Publication number: 20110120484Abstract: A fiber for artificial hair that has an improved appearance with a suppressed gloss is obtained by combining regenerated collagen fibers having different shapes in cross section. An artificial hair product using the same is provided. The fiber for artificial hair according to the present invention is obtained by combining fibers having different shapes in cross section. The fiber for artificial hair includes regenerated collagen fibers, and the regenerated collagens fibers include at least two types of regenerated collagen fibers whose cross-sectional shapes are selected from the group consisting of shapes including an elliptical shape, a circular shape, and a multifoil shape. The artificial hair product of the present invention includes the above-described fiber for artificial hair.Type: ApplicationFiled: July 8, 2009Publication date: May 26, 2011Inventors: Yoshitomo Matsumoto, Shin Sudo, Mitsuru Furukawa, Kazuaki Fujiwara, Masahiko Mihoichi
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Patent number: 7858542Abstract: There is provided a flame-retardant knit fabric which can exhibit texture and comfort inherent to materials such as cotton and urethane foam used for upholstered furniture such as a mattress and chair and bedding products such as a pillow, mattress pad and bedding, the flame-retardant knit fabric which can provide these products with high flame retardance. The internal structure of a mattress is covered with a flame-retardant knit fabric that comprises at least two fibers selected from the group consisting of (A) a halogen-containing fiber, (B) a cellulosic fiber, (C) a flame-retardant cellulosic fiber and (D) a polyester fiber, has a weight per unit area of at least 140 g/m2 and a thickness of at least 0.5 mm, and contains a flame retardant at a ratio of at least 2% by weight based on the while fabric.Type: GrantFiled: October 21, 2005Date of Patent: December 28, 2010Assignee: Kaneka CorporationInventors: Wataru Mio, Susumu Iwade, Yoshitomo Matsumoto, Masahiko Mihoichi, Shigeru Maruyama
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Publication number: 20080199651Abstract: A pile fabric for apparel having designability and real appearance similar to natural fur imparted thereto. There is provided a pile fabric of high disignability with highly real appearance, which pile fabric has a pile-length-differentiated long/short two layer structure or long/middle/short three layer structure wherein with respect to the piles other than those of longest-pile layer corresponding to a fluff portion of natural fur, the tip region thereof has a color different from that of the root region. This pile fabric can find application in apparel, and can provide merchandise with real appearance as a substitute material for natural fur.Type: ApplicationFiled: May 11, 2005Publication date: August 21, 2008Inventor: Yoshitomo Matsumoto
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Publication number: 20070237953Abstract: A flame resistant synthetic fiber having advanced flame resistance is provided. Furthermore, the flame resistant synthetic fiber may preferably be used in textiles used for furniture, such as beddings and chairs, such as mattress, and sofa, etc. that need extremely high carbonizability rendered highly flame resistant by flame resistant agents and advanced flame resistance. The present invention also aims at obtaining upholstered furniture products using the flame resistant fiber composite having advanced flame resistance.Type: ApplicationFiled: September 30, 2005Publication date: October 11, 2007Inventors: Toshiaki Ebisu, Masanobu Tamura, Masahiko Mihoichi, Wataru Mio, Yoshitomo Matsumoto, Shigeru Maruyama
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Publication number: 20070215847Abstract: The present invention provides a flame retardant synthetic fiber, which is flame retardant by enhancing carbonization and shape retention in combustion by the use of an additive while retaining self-distinguishing property and which is favorably used for bedclothes and furniture necessary to have high flame retardancy, a flame retardant fiber composite containing the flame retardant synthetic fiber, and an upholstered furniture product using the flame retardant fiber composite. A flame retardant synthetic fiber obtained by spinning a composition containing 4 to 50 parts by weight of a glass component having a glass transition temperature of at most 400° C. based on 100 parts by weight of a polymer containing 17 to 70% by weight of a halogen atom.Type: ApplicationFiled: April 25, 2005Publication date: September 20, 2007Applicant: KANEKA CORPORATIONInventors: Kouichi Nishiura, Wataru Mio, Toshiaki Ebisu, Masanobu Tamura, Masahiko Mihoichi, Yoshitomo Matsumoto, Shigeru Maruyama
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Publication number: 20060090272Abstract: There is provided a flame-retardant knit fabric which can exhibit texture and comfort inherent to materials such as cotton and urethane foam used for upholstered furniture such as a mattress and chair and bedding products such as a pillow, mattress pad and bedding, the flame-retardant knit fabric which can provide these products with high flame retardance. The internal structure of a mattress is covered with a flame-retardant knit fabric that comprises at least two fibers selected from the group consisting of (A) a halogen-containing fiber, (B) a cellulosic fiber, (C) a flame-retardant cellulosic fiber and (D) a polyester fiber, has a weight per unit area of at least 140 g/m2 and a thickness of at least 0.5 mm, and contains a flame retardant at a ratio of at least 2% by weight based on the while fabric.Type: ApplicationFiled: October 21, 2005Publication date: May 4, 2006Inventors: Wataru Mio, Susumu Iwade, Yoshitomo Matsumoto, Masahiko Mihoichi, Shigeru Maruyama
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Patent number: 5718129Abstract: A pile composition containing: from 20 to 60% by weight of synthetic fibers containing a polyester copolymer containing sulfonic groups, which can be dyed with a cationic dye, and from 40 to 80% by weight of synthetic fibers containing at least one of acrylic fibers and modacrylic fibers.Type: GrantFiled: January 25, 1996Date of Patent: February 17, 1998Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Muneto Makiyama, Yoshitomo Matsumoto
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Patent number: 5715707Abstract: A pile composite with specific appearnace comprising a pile fabric obtained by sliver knitting process, the pile fabric including a ground fabric, substantially straight piles and cone shape piles, both of the piles being developed on a surface of the ground fabric, wherein the cone shape piles are scattered all over the ground fabric and a total area of the cone shape piles at middle portions of the cone shape piles is from 0.5 to 15% of an area of the ground fabric. The pile composite has a specific appearance in which a large number of cone shape piles are developed on the surface of the pile fabric. The method for preparing the pile composite is also disclosed.Type: GrantFiled: July 8, 1996Date of Patent: February 10, 1998Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Muneto Makiyama, Kazuya Kusunoki, Yoshitomo Matsumoto