Patents by Inventor Naoko Matsufuji

Naoko Matsufuji 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).

  • Patent number: 11119406
    Abstract: A photo-curable composition having a high polymerization rate and a high polymerization conversion is provided, containing a radical-polymerizable monomer (A), a photopolymerization initiator (B), and a compound (C) serving as a sensitizer and having the following general formula (1), wherein X1 and X2 are selected from the group consisting of a hydrogen atom, alkyl groups, a phenyl group, a naphthyl group, and alkyl groups in which part or all of the hydrogen atoms are substituted with fluorine; where X1 and X2 may be the same or different; and R1 to R10 are independently selected from the group consisting of a hydrogen atom, halogen atoms, alkyl groups, alkoxy groups, a phenyl group, a naphthyl group, and alkyl groups in which part or all of the hydrogen atoms are substituted with fluorine, wherein R1 to R10 may be the same or different.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: September 14, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naoko Matsufuji, Toshiki Ito, Kanae Kawahata
  • Patent number: 10472445
    Abstract: A photocurable composition which decreases a mold releasing force is provided. The photocurable composition is a photocurable composition which is cured using light while being in contact with a mold having a surface in which a concavo-convex pattern is formed so as to manufacture a film having a concavo-convex pattern and which includes a polymerizable compound, a photopolymerization initiator, and a photosensitive gas generating agent having a photostimulation responsive portion. The photosensitive gas generating agent has a repeating structure containing at least one alkylene oxide chain and generates a gas from the photostimulation responsive portion by light irradiation.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: November 12, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshiki Ito, Chieko Mihara, Naoko Matsufuji, Kenji Kitagawa
  • Publication number: 20180339444
    Abstract: A photo-curable composition having a high polymerization rate and a high polymerization conversion is provided, containing a radical-polymerizable monomer (A), a photopolymerization initiator (B), and a compound (C) serving as a sensitizer and having the following general formula (1), wherein X1 and X2 are selected from the group consisting of a hydrogen atom, alkyl groups, a phenyl group, a naphthyl group, and alkyl groups in which part or all of the hydrogen atoms are substituted with fluorine; where X1 and X2 may be the same or different; and R1 to R10 are independently selected from the group consisting of a hydrogen atom, halogen atoms, alkyl groups, alkoxy groups, a phenyl group, a naphthyl group, and alkyl groups in which part or all of the hydrogen atoms are substituted with fluorine, wherein R1 to R10 may be the same or different.
    Type: Application
    Filed: July 30, 2018
    Publication date: November 29, 2018
    Inventors: Naoko Matsufuji, Toshiki Ito, Kanae Kawahata
  • Patent number: 9623439
    Abstract: Provided is a method of manufacturing a film, including: applying, onto a substrate, a photocurable composition containing a polymerizable monomer, a photopolymerization initiator, and a photosensitive gas generator that generates a gas through light stimulation to form an applied film; bringing a mold into contact with the applied film; irradiating the applied film with light through the mold to cure the applied film and to generate the gas in the applied film; and releasing the mold from the applied film after the irradiation of the applied film with the light to form a film (cured film) having a predetermined pattern shape on the substrate, in which in the irradiation of the applied film with the light, a reaction rate of a polymerization reaction of the polymerizable monomer in the applied film is higher than a reaction rate of a gas-generating reaction of the photosensitive gas generator in the applied film.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: April 18, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Toshiki Ito, Naoko Matsufuji, Kanae Kawahata
  • Patent number: 9541826
    Abstract: A photocurable composition of the present invention to be used for manufacturing a film with high productivity is a photocurable composition to be used for manufacturing a film having a predetermined pattern shape by curing the photocurable composition with light under a state where the photocurable composition is brought into contact with a mold having concavo-convex on a surface thereof, the photocurable composition including: a polymerizable compound; a photopolymerization initiator; a photosensitive gas generating agent for generating a gas through light stimulation; and a gas generation promotor for increasing an aggregation rate of the gas generated from the photosensitive gas generating agent at an interface between the mold and the photocurable composition, in which the gas generation promotor includes a fluorine atom-containing surfactant that is free of a polymerizable substituent.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: January 10, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Toshiki Ito, Kenichi Iida, Naoko Matsufuji
  • Patent number: 9475229
    Abstract: Provided is a resin production method in which a mold release force applied between a mold and a curable resin is reduced in a resin production method using a nano-imprint method. The resin production method includes an arrangement step of arranging a curable composition (1) on a substrate (2); a contacting step of bringing a mold (3) into contact with the curable composition (1); a curable composition curing step of curing the curable composition (1) by irradiating the curable composition (1) with a radiation or heating the curable composition (1) while keeping the curable composition (1) in contact with the mold (3); a tensile stress generation step of generating a tensile stress (6) in a direction of spacing the substrate (2) and the mold (3) away from each other to such a degree that the mold (3) and the curable composition (1) are not spaced away from each other when the curable composition (1) is cured; and a mold release step of releasing the curable composition (1) and the mold (3) from each other.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: October 25, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kenichi Iida, Toshiki Ito, Naoko Matsufuji, Tatsuya Suzuki
  • Publication number: 20150252131
    Abstract: A photocurable composition which decreases a mold releasing force is provided. The photocurable composition is a photocurable composition which is cured using light while being in contact with a mold having a surface in which a concavo-convex pattern is formed so as to manufacture a film having a concavo-convex pattern and which includes a polymerizable compound, a photopolymerization initiator, and a photosensitive gas generating agent having a photostimulation responsive portion. The photosensitive gas generating agent has a repeating structure containing at least one alkylene oxide chain and generates a gas from the photostimulation responsive portion by light irradiation.
    Type: Application
    Filed: September 20, 2013
    Publication date: September 10, 2015
    Inventors: Toshiki Ito, Chieko Mihara, Naoko Matsufuji, Kenji Kitagawa
  • Publication number: 20150210790
    Abstract: A photocurable composition of the present invention to be used for manufacturing a film with high productivity is a photocurable composition to be used for manufacturing a film having a predetermined pattern shape by curing the photocurable composition with light under a state where the photocurable composition is brought into contact with a mold having concavo-convex on a surface thereof, the photocurable composition including: a polymerizable compound; a photopolymerization initiator; a photosensitive gas generating agent for generating a gas through light stimulation; and a gas generation promotor for increasing an aggregation rate of the gas generated from the photosensitive gas generating agent at an interface between the mold and the photocurable composition, in which the gas generation promotor includes a fluorine atom-containing surfactant that is free of a polymerizable substituent.
    Type: Application
    Filed: September 20, 2013
    Publication date: July 30, 2015
    Inventors: Toshiki Ito, Kenichi Iida, Naoko Matsufuji
  • Publication number: 20150140227
    Abstract: Provided is a resin production method in which a mold release force applied between a mold and a curable resin is reduced in a resin production method using a nano-imprint method. The resin production method includes an arrangement step of arranging a curable composition (1) on a substrate (2); a contacting step of bringing a mold (3) into contact with the curable composition (1); a curable composition curing step of curing the curable composition (1) by irradiating the curable composition (1) with a radiation or heating the curable composition (1) while keeping the curable composition (1) in contact with the mold (3); a tensile stress generation step of generating a tensile stress (6) in a direction of spacing the substrate (2) and the mold (3) away from each other to such a degree that the mold (3) and the curable composition (1) are not spaced away from each other when the curable composition (1) is cured; and a mold release step of releasing the curable composition (1) and the mold (3) from each other.
    Type: Application
    Filed: July 17, 2013
    Publication date: May 21, 2015
    Inventors: Kenichi Iida, Toshiki Ito, Naoko Matsufuji, Tatsuya Suzuki
  • Publication number: 20150050426
    Abstract: Provided is a method of manufacturing a film, including: applying, onto a substrate, a photocurable composition containing a polymerizable monomer, a photopolymerization initiator, and a photosensitive gas generator that generates a gas through light stimulation to form an applied film; bringing a mold into contact with the applied film; irradiating the applied film with light through the mold to cure the applied film and to generate the gas in the applied film; and releasing the mold from the applied film after the irradiation of the applied film with the light to form a film (cured film) having a predetermined pattern shape on the substrate, in which in the irradiation of the applied film with the light, a reaction rate of a polymerization reaction of the polymerizable monomer in the applied film is higher than a reaction rate of a gas-generating reaction of the photosensitive gas generator in the applied film.
    Type: Application
    Filed: October 19, 2012
    Publication date: February 19, 2015
    Inventors: Toshiki Ito, Naoko Matsufuji, Kanae Kawahata
  • Publication number: 20140329057
    Abstract: A photo-curable composition having a high polymerization rate and a high polymerization conversion is provided. A patterning method having a high throughput is also provided. A photo-curable composition contains a radical-polymerizable monomer (A), a photopolymerization initiator (B), and a compound (C) serving as a sensitizer and having the following general formula (1). X1 and X2 are selected from the group consisting of a hydrogen atom, alkyl groups, a phenyl group, a naphthyl group, and alkyl groups in which part or all of the hydrogen atoms are substituted with fluorine. X1 and X2 may be the same or different. R1 to R10 are independently selected from the group consisting of a hydrogen atom, halogen atoms, alkyl groups, alkoxy groups, a phenyl group, a naphthyl group, and alkyl groups in which part or all of the hydrogen atoms are substituted with fluorine. R1 to R10 may be the same or different.
    Type: Application
    Filed: November 26, 2012
    Publication date: November 6, 2014
    Inventors: Naoko Matsufuji, Toshiki Ito, Kanae Kawahata