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).
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Patent number: 11119406Abstract: 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: GrantFiled: July 30, 2018Date of Patent: September 14, 2021Assignee: Canon Kabushiki KaishaInventors: Naoko Matsufuji, Toshiki Ito, Kanae Kawahata
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Patent number: 10472445Abstract: 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: GrantFiled: September 20, 2013Date of Patent: November 12, 2019Assignee: Canon Kabushiki KaishaInventors: Toshiki Ito, Chieko Mihara, Naoko Matsufuji, Kenji Kitagawa
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Publication number: 20180339444Abstract: 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: ApplicationFiled: July 30, 2018Publication date: November 29, 2018Inventors: Naoko Matsufuji, Toshiki Ito, Kanae Kawahata
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Patent number: 9623439Abstract: 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: GrantFiled: October 19, 2012Date of Patent: April 18, 2017Assignee: CANON KABUSHIKI KAISHAInventors: Toshiki Ito, Naoko Matsufuji, Kanae Kawahata
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Patent number: 9541826Abstract: 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: GrantFiled: September 20, 2013Date of Patent: January 10, 2017Assignee: CANON KABUSHIKI KAISHAInventors: Toshiki Ito, Kenichi Iida, Naoko Matsufuji
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Patent number: 9475229Abstract: 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: GrantFiled: July 17, 2013Date of Patent: October 25, 2016Assignee: CANON KABUSHIKI KAISHAInventors: Kenichi Iida, Toshiki Ito, Naoko Matsufuji, Tatsuya Suzuki
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Publication number: 20150252131Abstract: 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: ApplicationFiled: September 20, 2013Publication date: September 10, 2015Inventors: Toshiki Ito, Chieko Mihara, Naoko Matsufuji, Kenji Kitagawa
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Publication number: 20150210790Abstract: 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: ApplicationFiled: September 20, 2013Publication date: July 30, 2015Inventors: Toshiki Ito, Kenichi Iida, Naoko Matsufuji
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Publication number: 20150140227Abstract: 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: ApplicationFiled: July 17, 2013Publication date: May 21, 2015Inventors: Kenichi Iida, Toshiki Ito, Naoko Matsufuji, Tatsuya Suzuki
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Publication number: 20150050426Abstract: 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: ApplicationFiled: October 19, 2012Publication date: February 19, 2015Inventors: Toshiki Ito, Naoko Matsufuji, Kanae Kawahata
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Publication number: 20140329057Abstract: 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: ApplicationFiled: November 26, 2012Publication date: November 6, 2014Inventors: Naoko Matsufuji, Toshiki Ito, Kanae Kawahata