Patents by Inventor Yoshihiro Naruse
Yoshihiro Naruse 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: 11566114Abstract: A fiber-reinforced thermoplastic resin filament is obtained by impregnating a continuous reinforcing fiber with a thermoplastic resin, and satisfies all of conditions (a) to (c). (a) The volume ratio of a reinforcing fiber in a fiber-reinforced thermoplastic resin filament is 30 to 80%; and the volume ratio of a thermoplastic resin in a fiber-reinforced thermoplastic resin filament is 70 to 20%. (b) The thickness of a fiber-reinforced thermoplastic resin filament is 0.01 to 3 mm. (c) The length of a filament contained in a fiber-reinforced thermoplastic resin filament is 1 m or more.Type: GrantFiled: November 5, 2018Date of Patent: January 31, 2023Assignee: Toray Industries, Inc.Inventors: Masayuki Koshi, Yoshihiro Naruse, Shoma Ishida
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Publication number: 20220162408Abstract: A fiber-reinforced resin base material includes continuous reinforcing fibers or a reinforcing fiber base material in which discontinuous fibers are dispersed, the continuous reinforcing fibers or a reinforcing fiber base material being impregnated with a polyphenylene sulfide resin composition, wherein the fiber-reinforced resin base material has a glass-transition temperature, as measured by the DMA method (bending mode), of 115° C. or higher.Type: ApplicationFiled: March 17, 2020Publication date: May 26, 2022Inventors: Naoya Ouchiyama, Masayuki Koshi, Yoshihiro Naruse
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Publication number: 20220145047Abstract: A fiber-reinforced thermoplastic resin filament for a 3D printer is formed by impregnating a thermoplastic resin into a plurality of continuous reinforcing fibers, wherein: an average value S of a roundness parameter s of a cross section is 60% to 100%, the average value S being evaluated by (i) taking a photograph of the cross section perpendicular to the axial direction of the filament, (ii) drawing an inscribed circle and a circumscribed circle of the filament in a cross-sectional image and determining the diameter length of each, (iii) calculating the roundness parameter s defined by equation (1), and (iv) repeating (i)-(iii) at a plurality of locations on the filament and calculating the average value S of the roundness parameter s; and the coefficient of variation of the diameter length of the circumscribed circle is 0% to 10%.Type: ApplicationFiled: April 3, 2020Publication date: May 12, 2022Inventors: Shoma Ishida, Koji Suzuki, Yoshihiro Naruse
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Publication number: 20210292491Abstract: A fiber reinforced resin base material is formed by impregnating a continuous reinforcing fiber(s) or a reinforcing fiber material having a discontinuous fiber(s) dispersed therein with a resin composition which exhibits a single glass-transition temperature before and after being heated at 400° C. for one hour, wherein the resin composition is composed of (A) a thermoplastic resin having a glass-transition temperature of 100° C. or more and (B) a thermoplastic resin having a glass-transition temperature of less than 100° C. The fiber reinforced resin base material has excellent impregnation properties and thermal stability, having fewer voids, and having surface quality and high heat resistance.Type: ApplicationFiled: July 1, 2019Publication date: September 23, 2021Inventors: Naoya Ouchiyama, Masayuki Koshi, Yoshihiro Naruse, Atsushi Masunaga, Kenichi Utazaki
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Publication number: 20210277194Abstract: A fiber-reinforced polymer alloy substrate, in which continuous reinforcing fibers are arranged in parallel and are impregnated with a polymer alloy, is characterized in that: a polymer alloy obtained by combining thermoplastic resins of at least two types is used as the polymer alloy; the fiber volume content is in the range of 40 to 70% by volume; and the dispersion parameter D of the fibers is 90% or more. In the obtained fiber-reinforced polymer alloy substrate, the reinforcing fibers are dispersed with high uniformity, and high mechanical properties and heat resistance are stably exhibited with low variation.Type: ApplicationFiled: July 9, 2019Publication date: September 9, 2021Inventors: Masayuki Koshi, Naoya Ouchiyama, Yoshihiro Naruse
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Publication number: 20210213690Abstract: A method produces thermoplastic resin-impregnated sheet-shaped reinforcing fiber bundle obtained by impregnating reinforcing fibers made from continuous fibers with a thermoplastic resin, said method including: an application step in which a sheet-shaped reinforcing fiber bundle obtained by arranging reinforcing fibers made from continuous fibers in one direction is passed through an application section which retains thermoplastic resin, and the thermoplastic resin is applied to the sheet-shaped reinforcing fiber bundle to constitute a thermoplastic resin-impregnated sheet-shaped reinforcing fiber bundle; a further impregnation step in which the applied thermoplastic resin is further impregnated into the inside of the thermoplastic resin-impregnated sheet-shaped reinforcing fiber bundle; and a shaping step in which the thermoplastic resin-impregnated sheet-shaped reinforcing fiber bundle is shaped and solidified by cooling.Type: ApplicationFiled: August 20, 2019Publication date: July 15, 2021Inventors: Masayuki Koshi, Shoma Ishida, Yoshihiro Naruse
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Publication number: 20200369838Abstract: A fiber-reinforced thermoplastic resin filament is obtained by impregnating a continuous reinforcing fiber with a thermoplastic resin, and satisfies all of conditions (a) to (c). (a) The volume ratio of a reinforcing fiber in a fiber-reinforced thermoplastic resin filament is 30 to 80%; and the volume ratio of a thermoplastic resin in a fiber-reinforced thermoplastic resin filament is 70 to 20%. (b) The thickness of a fiber-reinforced thermoplastic resin filament is 0.01 to 3 mm. (c) The length of a filament contained in a fiber-reinforced thermoplastic resin filament is 1 m or more.Type: ApplicationFiled: November 5, 2018Publication date: November 26, 2020Inventors: Masayuki Koshi, Yoshihiro Naruse, Shoma Ishida
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Patent number: 10066084Abstract: A stampable sheet includes a resin and carbon fiber sheet including fiber bundles of discontinuous carbon fibers, wherein the carbon fiber sheet includes fiber bundles having a bundle width of 50 ?m or greater and opened fibers ranging from fiber bundles having a bundle width less than 50 ?m to fibers obtained by opening to the single-fiber level. When the direction along which the opened fibers have been oriented most is a 0° direction and the range of from the 0° to 90° direction is divided into angular zones, the distribution curve showing the proportion of the number of fiber bundles in each angular zone to that in all angular zones and the distribution curve showing the proportion of the number of opened fibers in each angular zone to that in all angular zones are reverse to each other in terms of gradient of the 0° to 90° direction.Type: GrantFiled: February 19, 2014Date of Patent: September 4, 2018Assignee: Toray Industries, Inc.Inventors: Katsuhiro Miyoshi, Takashi Shimada, Takafumi Hashimoto, Tetsuya Ohara, Yoshihiro Naruse
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Patent number: 9896563Abstract: A spongelike structure or a powder having fibers three-dimensionally arranged therein with high dispersibility, whose apparent density can be designed depending on the purpose or utility, as well as a process producing it. A fiber dispersion in which fibers having a number mean diameter in a predetermined range are dispersed in a dispersion medium, and this fiber dispersion is dried to remove the dispersion medium, thereby, a spongelike structure and a powder are produced.Type: GrantFiled: September 25, 2015Date of Patent: February 20, 2018Assignee: Toray Industries, Inc.Inventors: Yoshihiro Naruse, Satoshi Kondo, Shuichi Nonaka, Keishi Miwa, KaKuji Murakami
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Patent number: 9616154Abstract: A stimuli-responsive material includes a stimuli-responsive polymer, fibers and water, wherein the fibers have a number average diameter of 1 to 900 nm and are present in the stimuli-responsive material in a dispersed state; and a medical material and an anti-adhesive material, each of which includes a stimuli-responsive material including a stimuli-responsive polymer, fibers and water, wherein the fibers have a number average diameter of 1 to 900 nm and are present in the stimuli-responsive material in a dispersed state.Type: GrantFiled: January 29, 2013Date of Patent: April 11, 2017Assignee: Toray Industries, Inc.Inventors: Tomoyuki Horiguchi, Kosaku Takeuchi, Yoshihiro Naruse, Kazuhiro Tanahashi, Makito Yokoe, Kohei Yamashita
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Publication number: 20160339669Abstract: A stampable sheet includes a skin layer and a core layer characterized in that the core layer comprises a thermoplastic resin and a carbon fiber nonwoven sheet having fiber bundles of discontinuous carbon fibers, the carbon fiber nonwoven sheet contains at least five fiber bundles (A) having a bundle width of at least 150 ?m in 100 mm×100 mm of stampable sheet, and the skin layer comprises a thermoplastic resin and a strengthened fiber nonwoven sheet having opened discontinuous strengthened fibers.Type: ApplicationFiled: January 13, 2015Publication date: November 24, 2016Inventors: Katsuhiro Miyoshi, Takafumi Hashimoto, Kenta Bamba, Yoshihiro Naruse, Takuro Tokunaga
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Patent number: 9481770Abstract: A carbon fiber composite material which includes a carbon fiber sheet as a reinforcing material and a thermoplastic resin as a matrix resin, the carbon fiber sheet exhibiting a work per areal weight of 1×10?3 to 30×10?3 [(N·mm)/(g/m2)] in a tensile test using a specimen having a width of 25 mm. The carbon fiber composite material exhibits excellent flowability in molding and ensures excellent moldability even when molded into a complicated shape. Further, the composite material can yield a molded product which has high mechanical properties with minimized dispersion, thus being suitable for press molding.Type: GrantFiled: May 15, 2013Date of Patent: November 1, 2016Assignee: Toray Industries, Inc.Inventors: Yoshihiro Naruse, Katsuhiro Miyoshi, Takashi Shimada, Takafumi Hashimoto, Tetsuya Ohara
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Patent number: 9469740Abstract: A carbon-fiber-reinforced plastic prepared by impregnating a matrix resin into a sheet-like base material includes discontinuous carbon fibers, wherein a content ratio of carbon fibers having lengths of 10 mm or longer in the base material is 60 wt % or more relative to a total amount of the carbon fibers, and an average value of orientation degrees of carbon fibers contained in the base material is 2-10.Type: GrantFiled: April 18, 2012Date of Patent: October 18, 2016Assignee: Toray Industries, Inc.Inventors: Takafumi Hashimoto, Hirohito Minowa, Takashi Shimada, Masahiro Hashimoto, Katsuhiro Miyoshi, Yoshihiro Naruse
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Publication number: 20160053432Abstract: A carbon fiber nonwoven fabric in which carbon fibers are sized with an aliphatic compound having a plurality of epoxy groups or a specific aromatic compound; the number average x of carbon fibers forming a carbon fiber bundle, in which the number of carbon fibers forming the carbon fiber bundle is 90 or more, is 90 to 1,000 fibers per bundle among the carbon fiber bundles in the carbon fiber nonwoven fabric; and the standard deviation ? of the number of carbon fibers forming the carbon fiber bundle is 50 to 500.Type: ApplicationFiled: March 17, 2014Publication date: February 25, 2016Inventors: Katsuhiro Miyoshi, Takafumi Hashimoto, Yoshihiro Naruse
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Publication number: 20160017112Abstract: A spongelike structure or a powder having fibers three-dimensionally arranged therein with high dispersibility, whose apparent density can be designed depending on the purpose or utility, as well as a process producing it. A fiber dispersion in which fibers having a number mean diameter in a predetermined range are dispersed in a dispersion medium, and this fiber dispersion is dried to remove the dispersion medium, thereby, a spongelike structure and a powder are produced.Type: ApplicationFiled: September 25, 2015Publication date: January 21, 2016Inventors: Yoshihiro NARUSE, Satoshi KONDO, Shuichi NONAKA, Keishi MIWA, KaKuji MURAKAMI
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Publication number: 20150353713Abstract: A stampable sheet includes a resin and carbon fiber sheet including fiber bundles of discontinuous carbon fibers, wherein the carbon fiber sheet includes fiber bundles having a bundle width of 50 ?m or greater and opened fibers ranging from fiber bundles having a bundle width less than 50 ?m to fibers obtained by opening to the single-fiber level. When the direction along which the opened fibers have been oriented most is a 0° direction and the range of from the 0° to 90° direction is divided into angular zones, the distribution curve showing the proportion of the number of fiber bundles in each angular zone to that in all angular zones and the distribution curve showing the proportion of the number of opened fibers in each angular zone to that in all angular zones are reverse to each other in terms of gradient of the 0° to 90° direction.Type: ApplicationFiled: February 19, 2014Publication date: December 10, 2015Applicant: TORAY INDUSTRIES, INC.,Inventors: Katsuhiro Miyoshi, Takashi Shimada, Takafumi Hashimoto, Tetsuya Ohara, Yoshihiro Naruse
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Publication number: 20150292146Abstract: A stampable sheet includes discontinuous carbon fibers and a thermoplastic resin as a matrix resin, wherein viscosity ? of the stampable sheet in a state where the matrix resin in the stampable sheet is molten is ?0??<?0 exp(0.20Vf)(Pa·s), and ratio Z of refined carbon fiber bundles (A) in which Mn/(Ln×D) is less than 8.5×10?1 (mg/mm2) to the total weight of carbon fibers in the stampable sheet is 10?Z<70 (wt %). The configuration makes it possible to provide a stampable sheet provided with a controlled range of conditions, and to achieve both high flowability during molding and high mechanical properties after molding.Type: ApplicationFiled: October 15, 2013Publication date: October 15, 2015Inventors: Katsuhiro Miyoshi, Takashi Shimada, Takafumi Hashimoto, Tetsuya Ohara, Yoshihiro Naruse
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Publication number: 20150183941Abstract: A carbon fiber composite material which includes a carbon fiber sheet as a reinforcing material and a thermoplastic resin as a matrix resin, the carbon fiber sheet exhibiting a work per areal weight of 1×10?3 to 30×10?3 [(N·mm)/(g/m2)] in a tensile test using a specimen having a width of 25 mm. The carbon fiber composite material exhibits excellent flowability in molding and ensures excellent moldability even when molded into a complicated shape. Further, the composite material can yield a molded product which has high mechanical properties with minimized dispersion, thus being suitable for press molding.Type: ApplicationFiled: May 15, 2013Publication date: July 2, 2015Applicant: Toray Industries, Inc.Inventors: Yoshihiro Naruse, Katsuhiro Miyoshi, Takashi Shimada, Takafumi Hashimoto, Tetsuya Ohara
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Publication number: 20150005409Abstract: A stimuli-responsive material includes a stimuli-responsive polymer, fibers and water, wherein the fibers have a number average diameter of 1 to 900 nm and are present in the stimuli-responsive material in a dispersed state; and a medical material and an anti-adhesive material, each of which includes a stimuli-responsive material including a stimuli-responsive polymer, fibers and water, wherein the fibers have a number average diameter of 1 to 900 nm and are present in the stimuli-responsive material in a dispersed state.Type: ApplicationFiled: January 29, 2013Publication date: January 1, 2015Inventors: Tomoyuki Horiguchi, Kosaku Takeuchi, Yoshihiro Naruse, Kazuhiro Tanahashi, Makito Yokoe, Kohei Yamashita
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Patent number: 8895458Abstract: An abrasive cloth which comprises an article in a sheet form having, in at least a part thereof, nanofibers comprising a thermoplastic polymer and having a number average single fiber fineness of 1×10?8 to 2×10?4 dtex wherein the sum of single fiber fineness percentages (which is defined in the specification) of a single fiber fineness of 1×10?8 to 2×10?4 dtex is the range of 60% or more, and exhibits a stress at 10% elongation in a longitudinal direction of 5 to 200 N/cm-width; and a method for preparing a nanofiber structure, which comprises providing a nanofiber dispersion having a dispersant and, dispersed therein, nanofibers comprising a thermoplastic polymer and having a number average diameter of 1 to 500 nm, attaching the dispersion to a support, and then removing said dispersant. The above abrasive cloth is excellent in texturing characteristics, and the above method allows the preparation of a nanofiber structure wherein nanofibers form a composite with the support.Type: GrantFiled: April 20, 2005Date of Patent: November 25, 2014Assignee: Toray Industries, Inc.Inventors: Shuichi Nonaka, Yoshihiro Naruse, Takashi Ochi, Takeo Matsunase