Patents by Inventor Takehiko Tojo
Takehiko Tojo 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: 11773512Abstract: A fiber collection tool for collecting a fiber spun by electrospinning is described. The fiber collection tool has a size holdable by the hand of a user, and includes, in its interior, an electroconductive section. Preferably, the fiber collection tool further includes a surface section outside the electroconductive section. In a fiber deposit production method, a user collects, with the fiber collection tool, a fiber spun by the user by performing electrospinning using an electrospinning device having a size holdable by the hand of the user, and thereby produces a film including a deposit of the fiber on a surface of the fiber collection tool. The fiber collection tool, having the deposit formed thereon, is pressed against a surface of an object, and the deposit is transferred onto the surface of the object, to form a film including the fiber deposit on the surface of the object.Type: GrantFiled: October 26, 2020Date of Patent: October 3, 2023Assignee: Kao CorporationInventors: Tomonari Okada, Masayuki Uchiyama, Naomi Amari, Yuko Wakahara, Takehiko Tojo, Hideo Kobayashi
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Publication number: 20230270632Abstract: A skin-attaching sheet including an attaching portion configured for attaching to skin. The attaching portion includes a color-changeable layer that changes color following exposure to ultraviolet rays, and the attaching portion has a color difference (?E*ab) in an L*a*b* color system between before exposure and 10 seconds after exposure of 5 or more and 300 or less in a standard exposure test in which the attaching portion is exposed to ultraviolet rays in a moist state.Type: ApplicationFiled: September 29, 2021Publication date: August 31, 2023Applicant: Kao CorporationInventors: Ryota SHIIBA, Miyuki SUDO, Takehiko TOJO, Takashi FUKUI
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Patent number: 11732383Abstract: A fiber collection tool for collecting a fiber spun by electrospinning is described. The fiber collection tool has a size holdable by the hand of a user, and includes, in at least a portion of the surface thereof, an electroconductive section having a surface electrical resistivity of 1011 ?/cm2 or less, or a hydrophilic section having a water contact angle of preferably from 15° to 90° at 25° C. A user collects, with the fiber collection tool, a fiber spun by the user by electrospinning using an electrospinning device having a size holdable by the hand of the user, and thereby produces a film including a deposit of the fiber on a surface of the fiber collection tool. The fiber collection tool, having the deposit formed thereon, is pressed against a surface of an object, and the deposit is transferred onto the surface of the object, to form a film including the fiber deposit on the surface of the object.Type: GrantFiled: October 26, 2020Date of Patent: August 22, 2023Assignee: Kao CorporationInventors: Naomi Amari, Masayuki Uchiyama, Yuko Wakahara, Tomonari Okada, Takehiko Tojo, Hideo Kobayashi
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Publication number: 20230228001Abstract: An electrospinning device includes: a plurality of nozzles that discharge a spinning solution containing a resin; and a plurality of power sources for applying charge to the solution. The power sources are connected such that different charges are applied to the solutions discharged from the nozzles, respectively. The fiber sheet is a long fiber nonwoven fabric including first fibers and second fibers that are different from the first fibers. In a histogram based on fiber diameter distributions and frequencies of the numbers of fibers, the fiber sheet has a peak where a ratio P1 of a frequency of the number of fibers of the first fibers to a frequency of the number of fibers of the second fibers is 0.01 or more and 100 or less.Type: ApplicationFiled: June 14, 2021Publication date: July 20, 2023Applicant: Kao CorporationInventors: Yuta ABE, Takatoshi NIITSU, Takehiko TOJO
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Publication number: 20230189955Abstract: A hair holder (1) includes a tubular body (2) constructed in such a manner that a hair bundle (H) is insertable from an opening (1a) at one end toward an opening (1b) at the other end. The hair holder (1) has a longitudinal direction (X) and a width direction (Y). The hair holder (1) is constructed in such a manner that the hair holder can be rolled up along the longitudinal direction (X). The hair holder (1) includes a first sheet (21) to be located on an inner side in the rolled-up state, and a second sheet (22) to be located on an outer side. One or both of the two sheets (21, 22) satisfies at least one of condition (1) or (2) below: (1) the sheet includes a polyester-based nonwoven fabric, and the sheet’s storage modulus E? in dynamic viscoelasticity measured at 100° C. at a frequency of 1 Hz is 50 MPa or greater; or (2) the sheet includes a polyester-based nonwoven fabric, and the sheet’s storage modulus E? in dynamic viscoelasticity measured at 150° C. at a frequency of 1 Hz is 19.2 MPa or greater.Type: ApplicationFiled: August 4, 2020Publication date: June 22, 2023Applicant: KAO CORPORATIONInventors: Yoshiyuki KIBE, Takehiko TOJO
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Patent number: 11679578Abstract: A nanofiber sheet includes: a substrate layer; and a nanofiber layer located on one surface side of the substrate layer and containing nanofibers of a polymer compound. A peripheral edge of the nanofiber layer has a thickness of from 0.1 to 10 ?m. The nanofiber layer includes a gradation region having a thickness that gradually increases inward from the peripheral edge. The distance W1 between the peripheral edge of the nanofiber layer and a maximum thickness portion where the thickness becomes the greatest in the gradation region is at least 3 mm. A nanofiber sheet manufacturing method involves depositing nanofibers onto a collecting unit by moving at least either a nozzle or the collecting unit, to thereby manufacture a predetermined nanofiber sheet including a gradation region.Type: GrantFiled: November 25, 2019Date of Patent: June 20, 2023Assignee: Kao CorporationInventors: Suguru Ikeyama, Hideo Kobayashi, Takehiko Tojo, Koji Saito, Yuting Yang, Shunetsu Yonaiyama, Ikuo Fukuda
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Patent number: 11642288Abstract: Provided is a liquid skin external composition which allows a poorly water-soluble component to be applied to a skin in a liquid state. An assembly of fiber for use in production of a liquid skin external composition, the assembly of fiber comprising (a) a polymer soluble in water and an alcohol or a ketone in a content of 50 mass % or more and 98 mass % or less with respect to the whole assembly of fiber and (b) a poorly water-soluble component in a content of 2 mass % or more and 40 mass % or less with respect to the whole assembly of fiber.Type: GrantFiled: February 5, 2021Date of Patent: May 9, 2023Assignee: KAO CORPORATIONInventors: Naomi Amari, Takuji Kume, Makoto Onoo, Takehiko Tojo, Rui Takahashi
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Publication number: 20230041172Abstract: A sheet providing method provides a sheet that is used by being applied to a body surface of an individual user. The method involves determining a shape and dimensions of a sheet for each individual user U based on body surface information of the individual user; and forming the sheet by controlling a discharge nozzle that discharges a raw material of the sheet based on information regarding the shape and the dimensions of the sheet. Also, a sheet providing system having a sheet specification determining unit that determines a shape and dimensions of a sheet for each individual user based on body surface information of the individual user; and a sheet forming unit that forms the sheet by controlling a discharge nozzle that discharges a raw material of the sheet based on information regarding the shape and the dimensions of the sheet.Type: ApplicationFiled: December 24, 2020Publication date: February 9, 2023Applicant: Kao CorporationInventors: Suguru IKEYAMA, Naomi AMARI, Shunetsu YONAIYAMA, Hiroya SUZUKI, Takehiko TOJO, Hideo KOBAYASHI
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Patent number: 11571371Abstract: The coating formation method of the present invention is a method for forming a coating on a surface of a coating formation target. The formation method of the present invention includes an electrostatic spraying step of electrostatically spraying a composition directly onto the coating formation target, thereby forming a coating composed of a deposit containing fibers. The composition contains a component (a), a component (b), and a component (c) below. (a) One or more volatile substances selected from water, alcohols, and ketones. (b) A polymer having coating formability. (c) A liquid agent containing one or more selected from oils and polyols that are in a liquid form at 20° C.Type: GrantFiled: December 27, 2017Date of Patent: February 7, 2023Assignee: Kao CorporationInventors: Naomi Amari, Takehiko Tojo, Kenta Mukai
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Publication number: 20230033405Abstract: A nanofiber sheet has a nanofiber layer composed of an accumulation of nanofibers. The nanofiber sheet has a plurality of membrane-like regions which extend between the nanofibers. The membrane-like regions of the nanofiber sheet each contain a water insoluble polymer and a pigment. The water insoluble polymer contained in the membrane-like regions of the nanofiber sheet is different from a constituent member of the nanofibers. The nanofiber sheet is preferred because it has a plurality of membrane-like aggregate regions, each an aggregate of a plurality of membrane-like regions which are adjacent to each other via a fiber and it has a non-membrane-like region between the membrane-like aggregate regions adjacent to each other.Type: ApplicationFiled: December 22, 2020Publication date: February 2, 2023Applicant: Kao CorporationInventors: Suguru IKEYAMA, Naomi AMARI, Hiroya SUZUKI, Takehiko TOJO, Teruyuki FUKUDA
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Patent number: 11559124Abstract: A hair holder (1) includes a tubular body (2) that is constituted by a sheet and through which a bundle of hair can be inserted from an opening (21) at a one end toward an opening (22) at the other end, and has a flat shape. The tubular body (2) includes a first surface sheet (23A) and a second surface sheet (23B) that are located on the inside and the outside, respectively, in a state in which the hair holder (1) is rolled up. Side regions of the first surface sheet (23A) and side regions of the second surface sheet (23B) are joined to each other, thereby forming a pair of side joined regions (24) in the tubular body (2). The side joined regions (24) have a plurality of second-surface-sheet-side recesses (25) along a longitudinal direction (X) of the side joined regions (24), the recesses being recessed from the second surface sheet (23B) side toward the first surface sheet (23A) side.Type: GrantFiled: November 12, 2018Date of Patent: January 24, 2023Assignee: KAO CORPORATIONInventors: Yoshiyuki Kibe, Takehiko Tojo
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Patent number: 11523670Abstract: The present invention relates to preventing color transfer and sticking of powder-containing cosmetics to clothes or the like. A coating formation method of the present invention includes an electrostatic spraying step of electrostatically spraying a composition directly onto a skin surface onto which powder-containing cosmetics have been applied, thereby forming a coating on the skin. The composition contains a component (a) and a component (b) below. It is preferable that the method further includes a liquid agent applying step of applying a liquid agent containing one or more selected from water and oils that are in liquid form at 20° C. on the skin onto which the powder-containing cosmetics have been applied, wherein the liquid agent applying step is performed subsequent to the electrostatic spraying step. (a) One or more volatile substances selected from water, alcohols, and ketones; and (b) a polymer having a coating formation ability.Type: GrantFiled: October 17, 2016Date of Patent: December 13, 2022Assignee: Kao CorporationInventors: Naomi Amari, Takehiko Tojo, Motoaki Ito
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Publication number: 20220372658Abstract: A fiber collection tool for collecting a fiber spun by electrospinning is described. The fiber collection tool has a size holdable by the hand of a user, and includes, in its interior, an electroconductive section. Preferably, the fiber collection tool further includes a surface section outside the electroconductive section. In a fiber deposit production method, a user collects, with the fiber collection tool, a fiber spun by the user by performing electrospinning using an electrospinning device having a size holdable by the hand of the user, and thereby produces a film including a deposit of the fiber on a surface of the fiber collection tool. The fiber collection tool, having the deposit formed thereon, is pressed against a surface of an object, and the deposit is transferred onto the surface of the object, to form a film including the fiber deposit on the surface of the object.Type: ApplicationFiled: October 26, 2020Publication date: November 24, 2022Applicant: Kao CorporationInventors: Tomonari OKADA, Masayuki UCHIYAMA, Naomi AMARI, Yuko WAKAHARA, Takehiko TOJO, Hideo KOBAYASHI
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Publication number: 20220372662Abstract: A fiber collection tool for collecting a fiber spun by electrospinning is described. The fiber collection tool has a size holdable by the hand of a user, and includes, in at least a portion of the surface thereof, an electroconductive section having a surface electrical resistivity of 1011 ?/cm2 or less, or a hydrophilic section having a water contact angle of preferably from 15° to 90° at 25° C. A user collects, with the fiber collection tool, a fiber spun by the user by electrospinning using an electrospinning device having a size holdable by the hand of the user, and thereby produces a film including a deposit of the fiber on a surface of the fiber collection tool. The fiber collection tool, having the deposit formed thereon, is pressed against a surface of an object, and the deposit is transferred onto the surface of the object, to form a film including the fiber deposit on the surface of the object.Type: ApplicationFiled: October 26, 2020Publication date: November 24, 2022Applicant: Kao CorporationInventors: Naomi AMARI, Masayuki UCHIYAMA, Yuko WAKAHARA, Tomonari OKADA, Takehiko TOJO, Hideo KOBAYASHI
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Patent number: 11497290Abstract: The present invention provides a coating formation method with which adhesion between skin and a coating formed by electrostatic spraying is enhanced. The coating formation method of the present invention includes a liquid agent applying step of applying a liquid agent containing one or more selected from water, polyols and oils that are in a liquid form at 20° C., and an electrostatic spraying step of electrostatically spraying a composition directly on skin to form a coating. The liquid agent applying step and the electrostatic spraying step are performed in this order or in a reversed order. The composition includes a component (a) and a component (b) below: (a) one or more volatile substances selected from the group consisting of water, alcohols, and ketones, and (b) a polymer having a coating formation ability.Type: GrantFiled: October 17, 2016Date of Patent: November 15, 2022Assignee: Kao CorporationInventors: Naomi Amari, Takehiko Tojo
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Patent number: 11452351Abstract: A hair holder (1) of the present invention includes a tubular body (2) and a fixing member (5). The tubular body (2) has a first surface sheet (23A) and a second surface sheet (23B). The second surface sheet (23B) has a plurality of slits (25) that extends in a width direction and that is intermittently arranged along a longitudinal direction. The fixing member (5) has a first member (5a) and second members (5b) that can be detachably joined together. The first member (5a) is arranged on the first surface sheet (23A) on the side of a first opening (21) located at a first end in the longitudinal direction. The second surface sheet (23B) has a central region (M) in the width direction, where the plurality of slits is provided, and a pair of side regions (S) each of which is located on opposite sides of the central region (M). The second members (5b) are arranged in the pair of side regions (S), respectively, so as to extend in the longitudinal direction.Type: GrantFiled: February 1, 2019Date of Patent: September 27, 2022Assignee: KAO CORPORATIONInventors: Yoshiyuki Kibe, Takehiko Tojo
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Publication number: 20220287923Abstract: Provided is a liquid skin external composition which allows a poorly water-soluble component to be applied to a skin in a liquid state. An assembly of fiber for use in production of a liquid skin external composition, the assembly of fiber comprising (a) a polymer soluble in water and an alcohol or a ketone in a content of 50 mass % or more and 98 mass % or less with respect to the whole assembly of fiber and (b) a poorly water-soluble component in a content of 2 mass % or more and 40 mass % or less with respect to the whole assembly of fiber.Type: ApplicationFiled: February 5, 2021Publication date: September 15, 2022Applicant: KAO CORPORATIONInventors: Naomi AMARI, Takuji KUME, Makoto ONOO, Takehiko TOJO, Rui TAKAHASHI
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Patent number: 11419401Abstract: A hair holder (1) of the present invention includes a tubular body (2) and a fixing member (5). The tubular body (2) has a first surface sheet (23A) and a second surface sheet (23B). The second surface sheet (23B) has a plurality of slits (25) that extends in a width direction and that is intermittently arranged along a longitudinal direction. The fixing member (5) has a first member (5a) and second members (5b) that can be detachably joined together. The first member (5a) is arranged on the first surface sheet (23A) on the side of a first opening (21) located at a first end in the longitudinal direction. The second surface sheet (23B) has a central region (M) in the width direction, where the plurality of slits is provided, and a pair of side regions (S) each of which is located on opposite sides of the central region (M). The second members (5b) are arranged in the pair of side regions (S), respectively, so as to extend in the longitudinal direction.Type: GrantFiled: February 1, 2019Date of Patent: August 23, 2022Assignee: KAO CORPORATIONInventors: Yoshiyuki Kibe, Takehiko Tojo
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Publication number: 20220248826Abstract: A hair holder (1) of the present invention has a tubular body (2) which has: a first opening (21) located at one end; and a second opening (22) located at the other end, and which is configured to allow a lock of hair (H) to be inserted from the first opening (21) toward the second opening (22) and to be capable of being rolled up. The tubular body (2) has a longitudinal direction and a width direction that is orthogonal to the longitudinal direction. The tubular body (2) has two sheets that form outer surfaces. At least one of the two sheets is formed of a color-changeable sheet that satisfies conditions (1) and (2) below: (1) an L* value in an L*a*b* color coordinate space is 90 or less; and (2) a color difference ?E*ab value in the L*a*b* color coordinate space between before and after impregnation with a standard hair treatment agent is 1.0 or greater.Type: ApplicationFiled: March 13, 2019Publication date: August 11, 2022Applicant: KAO CORPORATIONInventors: Yoshiyuki KIBE, Takehiko TOJO
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Patent number: D979838Type: GrantFiled: December 24, 2019Date of Patent: February 28, 2023Assignee: KAO CORPORATIONInventors: Yoshiyuki Kibe, Takehiko Tojo