Patents by Inventor Seiichiro Murase

Seiichiro Murase 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: 20220149286
    Abstract: A carbon nanotube composition capable of producing an FET having improved mobility is provided. The carbon nanotube composition of the present invention is a halogen-free carbon nanotube composition comprising a carbon nanotube having the following features (1) and (2). (1) A dispersion liquid obtained by dispersing the carbon nanotube in a solution containing a cholic acid derivative and water has, in the absorption spectrum in the wavelength range of 300 nm to 1100 nm measured by an ultraviolet/visible/near-infrared spectroscopy, the minimum absorbance in the range of 600 nm to 700 nm and the maximum absorbance in the range of 900 nm to 1050 nm; wherein the ratio of the minimum absorbance and the maximum absorbance is 2.5 or more and 4.5 or less; and (2) the dispersion liquid has the height ratio of the G-band and the D-band (value of (D/G)×100) of 3.33 or less, as measured by a Raman spectrophotometer, using light having a wavelength of 532 nm as excitation light.
    Type: Application
    Filed: February 6, 2020
    Publication date: May 12, 2022
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Takayoshi HIRAI, Hidekazu NISHINO, Seiichiro MURASE
  • Publication number: 20220131097
    Abstract: A field-effect transistor comprises, on a substrate, a source electrode, a drain electrode, and a gate electrode; a semiconductor layer in contact with the source electrode and the drain electrode; wires individually electrically connected to the source electrode and the drain electrode; and a gate insulating layer that insulates the semiconductor layer from the gate electrode, wherein a connecting portion between the source electrode and the wire forms a continuous phase, and a connecting portion between the drain electrode and the wire forms a continuous phase, the portions constituting the continuous phases contain at least an electrically conductive component and an organic component, and integrated values of optical reflectance at a region of a wavelength of 600 nm or more and 900 nm or less on the wires are higher than integrated values of optical reflectance at a region of a wavelength of 600 nm or more and 900 nm or less on the source electrode and the drain electrode.
    Type: Application
    Filed: February 13, 2020
    Publication date: April 28, 2022
    Applicant: Toray Industries, Inc.
    Inventors: Shota Kawai, Hiroji Shimizu, Seiichiro Murase
  • Patent number: 11269254
    Abstract: An object of the present invention is to provide a method for accurately forming an antenna substrate as well as an antenna substrate with wiring line and electrode by a coating method. One aspect of the present invention provides a method for producing an antenna substrate with wiring line and electrode including the steps of: (1) forming a coating film using a photosensitive paste containing a conductive material and a photosensitive organic component on an insulating substrate; (2-A) processing the coating film into a pattern corresponding to an antenna by photolithography; (2-B) processing the coating film into a pattern corresponding to a wiring line; (2-C) processing the coating film into a pattern corresponding to an electrode; (3-A) curing the pattern corresponding to an antenna into an antenna; (3-B) curing the pattern corresponding to a wiring line into a wiring line; and (3-C) curing the pattern corresponding to an electrode into an electrode.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: March 8, 2022
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Junji Wakita, Hiroji Shimizu, Seiichiro Murase
  • Publication number: 20220037778
    Abstract: A flexible wireless communication device with high position accuracy and low cost by a simple process is described, including a wireless communication device and a method for manufacturing a wireless communication device formed by bonding a first film substrate on which at least a circuit is formed and a second film substrate on which an antenna is formed, in which the circuit includes a transistor, and the transistor is formed by a step of forming a conductive pattern on the first film substrate, a step of forming an insulating layer on the film substrate on which the conductive pattern is formed, and a step of applying a solution including an organic semiconductor and/or a carbon material on the insulating layer and drying the solution to form a semiconductor layer.
    Type: Application
    Filed: December 13, 2019
    Publication date: February 3, 2022
    Applicant: Toray Industries, Inc.
    Inventors: Ryuichi Tanaka, Seiichiro Murase, Junji Wakita
  • Patent number: 11171179
    Abstract: A memory array includes: a plurality of first wires; at least one second wire crossing the first wires; and a plurality of memory elements provided in correspondence with respective intersections of the first wires and the at least one second wire and each having a first electrode and a second electrode arranged spaced apart from each other, a third electrode connected to one of the at least one second wire, and an insulating layer that electrically insulates the first electrode and the second electrode and the third electrode from each other, the first wires, the at least one second wire, and the first wires, the at least one second wire, and the memory elements being formed on a substrate.
    Type: Grant
    Filed: May 29, 2017
    Date of Patent: November 9, 2021
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Shota Kawai, Seiichiro Murase, Hiroji Shimizu
  • Patent number: 11161991
    Abstract: Provided is a lithographic ink having superior surface staining resistance and fluidity. Also provided is a method for manufacturing a printed material using the lithographic ink. The lithographic ink has all of a viscosity (A) at a rotational speed of 0.5 rpm, a viscosity (B) at a rotational speed of 20 rpm, and a viscosity (C) at a rotational speed of 50 rpm of 5 Pa·s or more and 100 Pa·s or less, the viscosities (A), (B), and (C) being measured by using a cone-plate rotating viscometer at 25° C., and has a viscosity ratio (C)/(B) of 0.8 or more and 1.0 or less.
    Type: Grant
    Filed: November 24, 2016
    Date of Patent: November 2, 2021
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Yuichi Tsuji, Takejiro Inoue, Seiichiro Murase
  • Publication number: 20210328011
    Abstract: A carbon nanotube composite is described that can be accurately applied to a desired position by inkjet and a dispersion liquid using the same, where a main object is a carbon nanotube composite in which a conjugated polymer is attached to at least a part of the surface of a carbon nanotube, the conjugated polymer having a side chain represented by general formula (1): wherein R, X and A are defined as described.
    Type: Application
    Filed: September 17, 2019
    Publication date: October 21, 2021
    Applicant: Toray Industries, Inc.
    Inventors: Kazuki Isogai, Seiichiro Murase, Ryuichi Tanaka, Hidekazu Nishino
  • Patent number: 11127698
    Abstract: The purpose of the present invention is to provide: a conductive film; a method for producing a conductive film, which enables the achievement of a conductive film or conductive pattern having good electrical conductivity by means of light irradiation of a short period of time without being accompanied by a long-time heat treatment at high temperatures; a method for producing a field effect transistor, which uses this method for producing a conductive film; and a method for producing a wireless communication device. A method for producing a conductive film according to the present invention for the achievement of the above-described purpose comprises: a step for forming a coating film by applying a conductive paste, which contains conductive particles that have surfaces covered by elemental carbon, onto a substrate; and a step for irradiating the coating film with flashing light.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: September 21, 2021
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Shota Kawai, Junji Wakita, Seiichiro Murase
  • Patent number: 11094899
    Abstract: Provided is a method for manufacturing a field-effect transistor, the method including the steps of: forming a gate electrode on the surface of a substrate; forming a gate insulating layer on the gate electrode; forming a conductive film containing a conductor and a photosensitive organic component by a coating method on the gate insulating layer; exposing the conductive film from the rear surface side of the substrate with the gate electrode as a mask; developing the exposed conductive film to form a source electrode and a drain electrode; and forming a semiconductor layer by a coating method between the source electrode and the drain electrode. This method makes it possible to provide an FET, a semiconductor device, and an RFID which can be prepared by a simple process, and which have a high mobility, and have a gate electrode and source/drain electrodes aligned with a high degree of accuracy.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: August 17, 2021
    Inventors: Hiroji Shimizu, Seiichiro Murase, Shota Kawai
  • Patent number: 11002705
    Abstract: The present invention is to provide a semiconductor element achieving a high-level detection sensitivity when utilized as a sensor. The present invention relates to a semiconductor element including an organic film, a first electrode, a second electrode, and a semiconductor layer, in which the first electrode, the second electrode and the semiconductor layer are formed on the organic film, the semiconductor layer is arranged between the first electrode and the second electrode, the semiconductor layer contains a carbon nanotube, and the organic film has a water contact angle of 5° or more and 50° or less.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: May 11, 2021
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Kazuki Isogai, Seiichiro Murase, Hiroji Shimizu
  • Publication number: 20210083214
    Abstract: A field-effect transistor including at least: a substrate; a source electrode; a drain electrode; a gate electrode; a semiconductor layer in contact with the source electrode and with the drain electrode; and a gate insulating layer insulating between the semiconductor layer and the gate electrode, wherein the semiconductor layer contains a carbon nanotube, and the gate insulating layer contains a polymer having inorganic particles bound thereto. Provided is a field-effect transistor and a method for producing the field-effect transistor, wherein the field-effect transistor causes decreased leak current and furthermore enables a semiconductor solution to be uniformly applied.
    Type: Application
    Filed: September 25, 2018
    Publication date: March 18, 2021
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Daisuke SAKII, Seiichiro MURASE, Junji WAKITA
  • Publication number: 20210057822
    Abstract: A wireless communication device includes: an antenna for transmitting and receiving a radio wave, a rectifying circuit that is connected to the antenna and rectifies the radio wave received by the antenna to generate voltage, an internal circuit that operates by the voltage generated by the rectifying circuit, and a switch circuit that is disposed contactlessly with respect to the antenna and operates on the basis of an output signal of the internal circuit, wherein the switch circuit includes a coupling wiring and a switch element, and the operation of the switch element varies the impedance of the antenna so that communication can be carried out.
    Type: Application
    Filed: March 4, 2019
    Publication date: February 25, 2021
    Applicant: Toray Industries, Inc.
    Inventors: Yoshihiro KARIYA, Kenta NOGUCHI, Hiroji SHIMIZU, Seiichiro MURASE, Hisashi NISHIKAWA
  • Publication number: 20200405546
    Abstract: The present invention provides a circuit including a plurality of component parts formed on a substrate and having common functions, wherein the plurality of component parts each includes a detection part which shows responsiveness to moisture; wherein the responsiveness to moisture varies between the plurality of component parts; and wherein the presence or absence of a response to moisture detected by each detection part corresponds to a binary digital signal, and whereby the circuit outputs a sequence of binary digital signals.
    Type: Application
    Filed: November 15, 2018
    Publication date: December 31, 2020
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Kojiro NAITO, Shota KAWAI, Junji WAKITA, Kenta NOGUCHI, Seiichiro MURASE
  • Publication number: 20200321399
    Abstract: A memory array includes: a plurality of first wires; at least one second wire crossing the first wires; and a plurality of memory elements provided in correspondence with respective intersections of the first wires and the at least one second wire and each having a first electrode and a second electrode arranged spaced apart from each other, a third electrode connected to one of the at least one second wire, and an insulating layer that electrically insulates the first electrode and the second electrode and the third electrode from each other, the first wires, the at least one second wire, and the first wires, the at least one second wire, and the memory elements being formed on a substrate.
    Type: Application
    Filed: May 29, 2017
    Publication date: October 8, 2020
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Shota KAWAI, Seiichiro MURASE, Hiroji SHIMIZU
  • Patent number: 10790461
    Abstract: A field-effect transistor includes: a substrate; a source electrode; a drain electrode; a gate electrode; a semiconductor layer in contact with the source electrode and with the drain electrode; and a gate insulating layer insulating between the semiconductor layer and the gate electrode. The gate insulating layer comprising at least a polysiloxane having a structural unit represented by a general formula (1): in the general formula (1), R1 represents a hydrogen atom, an alkyl group, a cycloalkyl group, a heterocyclic group, an aryl group, a heteroaryl group, or an alkenyl group; R2 represents a hydrogen atom, an alkyl group, a cycloalkyl group, or a silyl group; m represents 0 or 1; A1 represents an organic group including at least two groups selected from a carboxy group, a sulfo group, a thiol group, a phenolic hydroxy group, or a derivative of these groups.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: September 29, 2020
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Daisuke Sakii, Seiichiro Murase, Junji Wakita
  • Publication number: 20200293849
    Abstract: A package in an aspect of the present invention includes: a package body having a receiving cavity for receiving a cavity item; a sheet for sealing the receiving cavity; a conducting wire formed on the sheet so as to pass above the sealed opening portion of the receiving cavity; and a wireless communication device formed on the sheet so as to be connected to the conducting wire. The wireless communication device transmits a signal including information which differs between before and after the conducting wire together with the sheet is cut as a result of opening the receiving cavity. The information transmitted from the wireless communication device is read by a reader. The package and the reader are used for a cavity item management system.
    Type: Application
    Filed: September 27, 2018
    Publication date: September 17, 2020
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Junji WAKITA, Seiichiro MURASE
  • Publication number: 20200261278
    Abstract: The present invention provides a wireless communication device including: a circuit unit; and an antenna which is connected to the circuit unit and which transmits and receives signals to and from a transceiver in a non-contact manner. The wireless communication device transmits different signals to the transceiver, depending on the presence or absence of contact between at least a part of the circuit unit and moisture.
    Type: Application
    Filed: August 29, 2018
    Publication date: August 20, 2020
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Shota KAWAI, Yoshihiro KARIYA, Junji WAKITA, Seiichiro MURASE
  • Publication number: 20200244182
    Abstract: An object of the present invention is to provide an excellent integrated circuit by a simple process.
    Type: Application
    Filed: October 25, 2018
    Publication date: July 30, 2020
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Hiroji SHIMIZU, Seiichiro MURASE
  • Publication number: 20200203292
    Abstract: The purpose of the present invention is to provide: a conductive film; a method for producing a conductive film, which enables the achievement of a conductive film or conductive pattern having good electrical conductivity by means of light irradiation of a short period of time without being accompanied by a long-time heat treatment at high temperatures; a method for producing a field effect transistor, which uses this method for producing a conductive film; and a method for producing a wireless communication device. A method for producing a conductive film according to the present invention for the achievement of the above-described purpose comprises: a step for forming a coating film by applying a conductive paste, which contains conductive particles that have surfaces covered by elemental carbon, onto a substrate; and a step for irradiating the coating film with flashing light.
    Type: Application
    Filed: June 22, 2018
    Publication date: June 25, 2020
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Shota KAWAI, Junji WAKITA, Seiichiro MURASE
  • Patent number: 10636866
    Abstract: Provided is a capacitor that has good bonding between the dielectric layer and the conductive layer, has a characteristic of low ESR, and keeps leak current suppressed. The capacitor contains a dielectric layer and a conductive film and is characterized in that the dielectric layer contains an organic compound and a metal compound and that the conductive film contains a conductive material and an organic compound.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: April 28, 2020
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Hiroji Shimizu, Junji Wakita, Seiichiro Murase