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).

  • Publication number: 20230033405
    Abstract: 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: Application
    Filed: December 22, 2020
    Publication date: February 2, 2023
    Applicant: Kao Corporation
    Inventors: Suguru IKEYAMA, Naomi AMARI, Hiroya SUZUKI, Takehiko TOJO, Teruyuki FUKUDA
  • Patent number: 11559124
    Abstract: 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: Grant
    Filed: November 12, 2018
    Date of Patent: January 24, 2023
    Assignee: KAO CORPORATION
    Inventors: Yoshiyuki Kibe, Takehiko Tojo
  • Patent number: 11523670
    Abstract: 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: Grant
    Filed: October 17, 2016
    Date of Patent: December 13, 2022
    Assignee: Kao Corporation
    Inventors: Naomi Amari, Takehiko Tojo, Motoaki Ito
  • Publication number: 20220372662
    Abstract: 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: Application
    Filed: October 26, 2020
    Publication date: November 24, 2022
    Applicant: Kao Corporation
    Inventors: Naomi AMARI, Masayuki UCHIYAMA, Yuko WAKAHARA, Tomonari OKADA, Takehiko TOJO, Hideo KOBAYASHI
  • Publication number: 20220372658
    Abstract: 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: Application
    Filed: October 26, 2020
    Publication date: November 24, 2022
    Applicant: Kao Corporation
    Inventors: Tomonari OKADA, Masayuki UCHIYAMA, Naomi AMARI, Yuko WAKAHARA, Takehiko TOJO, Hideo KOBAYASHI
  • Patent number: 11497290
    Abstract: 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: Grant
    Filed: October 17, 2016
    Date of Patent: November 15, 2022
    Assignee: Kao Corporation
    Inventors: Naomi Amari, Takehiko Tojo
  • Patent number: 11452351
    Abstract: 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: Grant
    Filed: February 1, 2019
    Date of Patent: September 27, 2022
    Assignee: KAO CORPORATION
    Inventors: Yoshiyuki Kibe, Takehiko Tojo
  • Publication number: 20220287923
    Abstract: 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: Application
    Filed: February 5, 2021
    Publication date: September 15, 2022
    Applicant: KAO CORPORATION
    Inventors: Naomi AMARI, Takuji KUME, Makoto ONOO, Takehiko TOJO, Rui TAKAHASHI
  • Patent number: 11419401
    Abstract: 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: Grant
    Filed: February 1, 2019
    Date of Patent: August 23, 2022
    Assignee: KAO CORPORATION
    Inventors: Yoshiyuki Kibe, Takehiko Tojo
  • Publication number: 20220248826
    Abstract: 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: Application
    Filed: March 13, 2019
    Publication date: August 11, 2022
    Applicant: KAO CORPORATION
    Inventors: Yoshiyuki KIBE, Takehiko TOJO
  • Patent number: 11351402
    Abstract: A method for producing a film of the present invention includes the step of electrostatically spraying a liquid composition directly on the surface of skin using an electrostatic spray device to form a film on the skin. The electrostatic spray device includes a container capable of storing the liquid composition, a nozzle configured to eject the liquid composition, a power supply configured to apply a voltage to the nozzle, and a voltage stabilizer configured to stabilize the voltage applied by the power supply to the nozzle. The liquid composition contains component (a): one or more volatile substances selected from alcohols and ketones, and component (b): a polymer having film formability.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: June 7, 2022
    Assignee: Kao Corporation
    Inventors: Takehiko Tojo, Ikuo Fukuda
  • Publication number: 20220134386
    Abstract: A cleaning member includes a nonwoven structure whose shape is retained by entanglement between single fibers having a median fiber diameter of from 100 to 2000 nm. The nonwoven structure has an apparent density of from 0.05 to 0.60 g/cm3. Preferably, the cleaning member may further include a support, and the support and the nonwoven structure may be arranged in contact with one another. Preferably, the single fiber may be an electrospun fiber. A method for manufacturing a cleaning member includes: a step of performing spinning by electrospinning, and thereby forming a deposit of a single fiber; and a step of pressing the deposit, and thereby forming a nonwoven structure having an apparent density of from 0.05 to 0.60 g/cm3.
    Type: Application
    Filed: February 25, 2020
    Publication date: May 5, 2022
    Applicant: Kao Corporation
    Inventors: Takehiko TOJO, Takehiko UEMATSU, Masahiko SUZUKI
  • Publication number: 20220110429
    Abstract: The present invention provides a hair treatment method for curling a lock of hair (H) using a hair holder (1). The hair holder (1) includes a tubular body (2) which has an opening (21) located at a first end of the tubular body and an opening (22) located at a second end of the tubular body, and which is configured to allow a lock of hair (H) to be inserted from the opening (21) toward the opening (22) and to be capable of being rolled up.
    Type: Application
    Filed: January 22, 2020
    Publication date: April 14, 2022
    Applicant: KAO CORPORATION
    Inventors: Nicole ARNOLD, Takehiko TOJO, Hans-Peter LAUX, Jens HEILMANN
  • Publication number: 20220039531
    Abstract: 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: Application
    Filed: February 1, 2019
    Publication date: February 10, 2022
    Applicant: Kao Corporation
    Inventors: Yoshiyuki KIBE, Takehiko TOJO
  • Publication number: 20220024172
    Abstract: 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: Application
    Filed: November 25, 2019
    Publication date: January 27, 2022
    Applicant: Kao Corporation
    Inventors: Suguru IKEYAMA, Hideo KOBAYASHI, Takehiko TOJO, Koji SAITO, Yuting YANG, Shunetsu YONAIYAMA, Ikuo FUKUDA
  • Publication number: 20220022617
    Abstract: A hair treatment method for curling a lock of hair using a hair holder is provided. The hair holder includes a tubular body into which a lock of hair can be inserted from an opening at a first end of the tubular body toward an opening at a second end thereof, and the tubular body is configured to be capable of being rolled up. The hair treatment method includes inserting a lock of hair into the hair holder, rolling up the tubular body together with the lock of hair inserted in the tubular body so that a large diameter portion that has a tubular shape and forms an outer circumferential portion and a small diameter portion that is located inside the large diameter portion and has a space between the small diameter portion and the large diameter portion are formed, and performing curling while maintaining this wound state.
    Type: Application
    Filed: January 22, 2020
    Publication date: January 27, 2022
    Applicant: KAO CORPORATION
    Inventors: Jens HEILMANN, Takehiko TOJO, Nicole ARNOLD
  • Publication number: 20210355605
    Abstract: An electrostatic spinning device including a nozzle that sprays spinning liquid that has been charged; a switch that controls spray operation of the spinning liquid; and a housing that includes a bulging portion and a grip portion for grip of the user, the bulging portion bulging outward from a virtual line connecting a tip of the nozzle and an end of the switch on a side of the nozzle, an angle formed by an axis of the nozzle and an axis of the grip portion being 45 degrees or more.
    Type: Application
    Filed: October 16, 2019
    Publication date: November 18, 2021
    Applicant: KAO CORPORATION
    Inventors: Shinji KODAMA, Susumu FUJINAMI, Haruomi ENOMOTO, Takahiro HIRANO, Takehiko TOJO
  • Patent number: 11174569
    Abstract: A method for producing ultrafine fibers of the present invention includes forming an electric field between an discharging nozzle from which a raw resin is discharged and a charging electrode which is disposed apart from the discharging nozzle, and supplying the raw resin which has been heated and melted into the electric field from the discharging nozzle to spin the raw resin. The raw resin is a resin mixture which contains a resin having a melting point and an additive, and satisfies a relation (I) below: A/B?1.0×102??(I) wherein A represents the absolute value (?) of electrical impedance of the raw resin at 50° C., and B represents the absolute value (?) of electrical impedance of the raw resin at a temperature 50° C. higher than a melting point of the raw resin.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: November 16, 2021
    Assignee: KAO CORPORATION
    Inventors: Naomi Amari, Takehiko Tojo, Koji Saito, Hiroya Suzuki, Keitaro Yoneta, Kenta Mukai
  • Patent number: 11161126
    Abstract: A method for producing a film of the present invention includes an electrostatic spraying step of electrostatically spraying a liquid composition directly on the surface of skin to form a film on the skin by using an electrostatic spray device. The electrostatic spray device includes a container capable of storing the liquid composition, a nozzle configured to eject the liquid composition, and a power supply configured to apply a voltage to the nozzle. The liquid composition contains component (a): one or two or more volatile substances selected from alcohols and ketones, component (b): a water-insoluble polymer having film formability, and component (c): 0.2% by mass or more and 25% by mass or less of water.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: November 2, 2021
    Assignee: Kao Corporation
    Inventors: Takehiko Tojo, Ikuo Fukuda
  • Publication number: 20210178412
    Abstract: The present invention provides an apparatus with which it is possible to easily form a coating made of deposits of fibers. Specifically, the present invention provides an apparatus (1) for producing a coating that includes an electrostatic spraying section (P1) that includes a housing (10). The housing (10) is internally provided with a nozzle (16), an electrode (20), an air-flow generating section (21), a hollow section (22), and an air jetting opening (24). The hollow section (22) is located between the nozzle (16) and the air-flow generating section (21) and is adjacent to the air-flow generating section (21). The hollow section (22) is adjacent to the air jetting opening (24). The housing (10) is configured to be capable of being held by a human hand. When the electrostatic spraying section (P1) is viewed in a liquid composition discharge direction, a tip of the nozzle (16) is located at a frontmost end portion of the electrostatic spraying section (P1).
    Type: Application
    Filed: October 3, 2019
    Publication date: June 17, 2021
    Applicant: Kao Corporation
    Inventors: Takuya ISHIDA, Ikuo FUKUDA, Takahiro HIRANO, Takehiko TOJO