Patents by Inventor Ikuo Matsukura
Ikuo Matsukura 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: 7790811Abstract: A useful fluoropolymer excellent in transparency and durability to a short wavelength light (an ArF excimer laser having an irradiation wavelength of 193 nm and a F2 excimer laser having an irradiation wavelength of 157 nm) as e.g. a pellicle material, wherein a polymer (I) to be used for a pellicle membrane and/or an adhesive is a polymer essentially containing the following fluorine atom-containing unit (1), wherein a chain forming the polymer main chain comprises a carbon atom and an etheric oxygen atom, at least one carbon atom forming the main chain is a carbon atom forming a cyclic group, and at least one etheric oxygen atom forming the main chain is an oxygen atom forming no cyclic group.Type: GrantFiled: June 5, 2006Date of Patent: September 7, 2010Assignee: Asahi Glass Company, LimitedInventors: Ikuo Matsukura, Hiromasa Yamamoto, Yuichiro Ishibashi, Shinji Okada, Naoko Shirota
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Patent number: 7453620Abstract: To provide a spatial optical modulation element having a long life free from a deterioration of optical modulation characteristics even if a high power laser beam with an ultra-short pulse is used as a modulation drive light. A spatial optical modulation element 1 wherein disposed between a prism 2 and an optical functional material layer 3 made of an optical functional material with the refractive index changeable by light irradiation, is a low refractive index layer 4 made of a transparent material with a refractive index lower than the refractive index of the dielectric. A spatial optical modulation method characterized in that using such a spatial optical modulation element 1, at the interface between the prism and the low refractive index layer, reflection of a to-be-modulated light 5 entering through the prism, is controlled by a modulation drive light 6.Type: GrantFiled: March 3, 2006Date of Patent: November 18, 2008Assignee: Asahi Glass Company, LimitedInventors: Toshihiko Nagamura, Ikuo Matsukura
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Patent number: 7442815Abstract: A pellicle which is excellent in transmittance and durability against short wavelength light, and which can be used for photolithography by using e.g. a KrF excimer laser, is provided. A pellicle for exposure to a light having a wavelength of at most 200 nm, which comprises a frame and a pellicle membrane bonded to the frame by means of an adhesive, wherein the pellicle membrane and/or the adhesive comprises a polymer containing repeating units represented by the following formula (1): wherein Q represents a C1-3 polyfluoroalkylene group having a linear structure, or a group having at least one atom selected from hydrogen atoms and fluorine atoms in such a polyfluoroalkylene group substituted by a substituent comprising a polyfluoroalkyl group which may contain an ethereal oxygen atom, or the like, and X represents a hydrogen atom, a fluorine atom or a C1-3 polyfluoroalkyl group which may contain an ethereal oxygen atom.Type: GrantFiled: February 22, 2005Date of Patent: October 28, 2008Assignee: Asahi Glass Company, LimitedInventors: Ikuo Matsukura, Hidekazu Okamoto, Eisuke Murotani, Kazuya Oharu
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Patent number: 7151625Abstract: To provide a spatial optical modulation element having a long life free from a deterioration of optical modulation characteristics even if a high power laser beam with an ultra-short pulse is used as a modulation drive light, and having a high response speed when e.g. a light having a wavelength of 1.55 ?m is used. A spatial optical modulation element wherein disposed between a prism 2 and an optical functional material layer 3 made of an optical functional material with the complex index of refraction changeable by light irradiation, is a low refractive index layer 4 made of a transparent material with a refractive index lower than the refractive index of the prism 2, and carbon nanotubes are used as the optical function material.Type: GrantFiled: April 27, 2006Date of Patent: December 19, 2006Assignee: Asahi Glass Company, LimitedInventors: Toshihiko Nagamura, Ikuo Matsukura
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Publication number: 20060240222Abstract: It is to provide a useful fluoropolymer excellent in transparency and durability to a short wavelength light (an ArF excimer laser having an irradiation wavelength of 193 nm and a F2 excimer laser having an irradiation wavelength of 157 nm) as e.g. a pellicle material. A pellicle wherein a polymer (I) to be used for a pellicle membrane and/or an adhesive is a polymer essentially containing the following unit (1). The unit (1) is a unit containing a fluorine atom, wherein a chain forming the polymer main chain comprises a carbon atom and an etheric oxygen atom, at least one carbon atom forming the main chain is a carbon atom forming a cyclic group, and at least one etheric oxygen atom forming the main chain is an oxygen atom forming no cyclic group.Type: ApplicationFiled: June 5, 2006Publication date: October 26, 2006Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Ikuo Matsukura, Hiromasa Yamamoto, Yuichiro Ishibashi, Shinji Okada, Naoko Shirota
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Publication number: 20060193026Abstract: To provide a spatial optical modulation element having a long life free from a deterioration of optical modulation characteristics even if a high power laser beam with an ultra-short pulse is used as a modulation drive light, and having a high response speed when e.g. a light having a wavelength of 1.55 ?m is used. A spatial optical modulation element wherein disposed between a prism 2 and an optical functional material layer 3 made of an optical functional material with the complex index of refraction changeable by light irradiation, is a low refractive index layer 4 made of a transparent material with a refractive index lower than the refractive index of the prism 2, and carbon nanotubes are used as the optical function material.Type: ApplicationFiled: April 27, 2006Publication date: August 31, 2006Applicant: Asahi Glass Company, LimitedInventors: Toshihiko Nagamura, Ikuo Matsukura
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Publication number: 20060146388Abstract: To provide a spatial optical modulation element having a long life free from a deterioration of optical modulation characteristics even if a high power laser beam with an ultra-short pulse is used as a modulation drive light. A spatial optical modulation element 1 wherein disposed between a prism 2 and an optical functional material layer 3 made of an optical functional material with the refractive index changeable by light irradiation, is a low refractive index layer 4 made of a transparent material with a refractive index lower than the refractive index of the dielectric. A spatial optical modulation method characterized in that using such a spatial optical modulation element 1, at the interface between the prism and the low refractive index layer, reflection of a to-be-modulated light 5 entering through the prism, is controlled by a modulation drive light 6.Type: ApplicationFiled: March 3, 2006Publication date: July 6, 2006Applicant: Aashi Glass Company, LimitedInventors: Toshihiko Nagamura, Ikuo Matsukura
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Patent number: 6960381Abstract: A pellicle is used for a photolithographic patterning process using a light having a wavelength of from 100 to 200 nm. The pellicle contains a pellicle membrane containing (A) a substantially linear fluoropolymer which has an alicyclic structure in its main chain, the main chain being a chain of carbon atoms, and the fluropolymer satisfying the following requirements (1) the carbon atoms in the main chain of the fluoropolymer contain a carbon atom having at least one hydrogen atom bonded thereto and a carbon atom having no hydrogen atom bonded thereto; and (2) in the measurement of a high resolution proton magnetic resonance spectrum of the fluoropolymer, a number of hydrogen atoms based on signals appearing on the higher magnetic field side higher than 2.8 ppm, is at most 6 mol % based on a total number of hydrogen atoms.Type: GrantFiled: August 6, 2003Date of Patent: November 1, 2005Assignee: Asahi Glass Company, LimitedInventors: Ikuo Matsukura, Naoko Shirota, Nana Tsushima, Kiyoshi Yamamoto, Reiko Kakita
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Publication number: 20050147897Abstract: A pellicle which is excellent in transmittance and durability against short wavelength light, and which can be used for photolithography by using e.g. a KrF excimer laser, is provided. A pellicle for exposure to a light having a wavelength of at most 200 nm, which comprises a frame and a pellicle membrane bonded to the frame by means of an adhesive, wherein the pellicle membrane and/or the adhesive comprises a polymer containing repeating units represented by the following formula (1): wherein Q represents a C1-3 polyfluoroalkylene group having a linear structure, or a group having at least one atom selected from hydrogen atoms and fluorine atoms in such a polyfluoroalkylene group substituted by a substituent comprising a polyfluoroalkyl group which may contain an ethereal oxygen atom, or the like, and X represents a hydrogen atom, a fluorine atom or a C1-3 polyfluoroalkyl group which may contain an ethereal oxygen atom.Type: ApplicationFiled: February 22, 2005Publication date: July 7, 2005Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Ikuo Matsukura, Hidekazu Okamoto, Eisuke Murotani, Kazuya Oharu
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Publication number: 20040071899Abstract: A pellicle for a photolithographic patterning process by means of a light having a wavelength of from 100 to 200 nm, which has a pellicle membrane made of the following fluoropolymer (A):Type: ApplicationFiled: August 6, 2003Publication date: April 15, 2004Applicant: Asahi Glass Company, LimitedInventors: Ikuo Matsukura, Naoko Shirota, Nana Tsushima, Kiyoshi Yamamoto, Reiko Kakita
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Publication number: 20040048005Abstract: A pellicle for a photolithographic patterning process by means of a light having a wavelength of at most 200 nm, comprising a frame and a pellicle membrane bonded to the frame by means of an adhesive, wherein the pellicle membrane or the adhesive comprises the following fluorine-containing polymer (A):Type: ApplicationFiled: September 3, 2003Publication date: March 11, 2004Applicant: ASAHI GLASS COMPANY LIMITEDInventors: Ikuo Matsukura, Naoko Shirota, Jun Irisawa
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Patent number: 6660346Abstract: A pellicle for a photolithographic patterning process by means of a light having a wavelength of at most 200 nm, comprising a frame and a pellicle membrane bonded to the frame by means of an adhesive, wherein the pellicle membrane or the adhesive comprises the following fluorine-containing polymer (A): fluorine-containing polymer (A): a substantially linear fluorine-containing polymer having a chain of carbon atoms as the main chain, and containing as carbon atoms in its main chain, a carbon atom having one or two hydrogen atoms bonded thereto and a carbon atom having no hydrogen atom bonded thereto and having a fluorine atom or a fluorine-containing organic group bonded thereto.Type: GrantFiled: January 27, 2003Date of Patent: December 9, 2003Assignee: Asahi Glass Company, LimitedInventors: Ikuo Matsukura, Naoko Shirota, Jun Irisawa
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Publication number: 20030134057Abstract: A pellicle for a photolithographic patterning process by means of a light having a wavelength of at most 200 nm, comprising a frame and a pellicle membrane bonded to the frame by means of an adhesive, wherein the pellicle membrane or the adhesive comprises the following fluorine-containing polymer (A):Type: ApplicationFiled: January 27, 2003Publication date: July 17, 2003Applicant: Asahi Glass Company, LimitedInventors: Ikuo Matsukura, Naoko Shirota, Jun Irisawa
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Patent number: 6594431Abstract: An optical waveguide provided on a substrate, which comprises a core for transmitting light and a clad formed around the core, wherein the clad is made of a fluorinated alicyclic structure-containing polymer having functional groups.Type: GrantFiled: September 6, 2002Date of Patent: July 15, 2003Assignee: Asahi Glass Company Ltd.Inventors: Katsumi Suzuki, Ikuo Matsukura
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Patent number: 6548129Abstract: A pellicle for a photolithographic patterning process by means of a light having a wavelength of at most 200 nm, comprising a frame and a pellicle membrane bonded to the frame by means of an adhesive, wherein the pellicle membrane or the adhesive comprises the following fluorine-containing polymer (A): fluorine-containing polymer (A): a substantially linear fluorine-containing polymer having a chain of carbon atoms as the main chain, and containing as carbon atoms in its main chain, a carbon atom having one or two hydrogen atoms bonded thereto and a carbon atom having no hydrogen atom bonded thereto and having a fluorine atom or a fluorine-containing organic group bonded thereto.Type: GrantFiled: March 13, 2001Date of Patent: April 15, 2003Assignee: Asahi Glass Company, LimitedInventors: Ikuo Matsukura, Naoko Shirota, Jun Irisawa
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Publication number: 20030026574Abstract: An optical waveguide provided on a substrate, which comprises a core for transmitting light and a clad formed around the core, wherein the clad is made of a fluorinated alicyclic structure-containing polymer having functional groups.Type: ApplicationFiled: September 6, 2002Publication date: February 6, 2003Applicant: ASAHI GLASS COMPANY LTD.Inventors: Katsumi Suzuki, Ikuo Matsukura
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Patent number: 6490400Abstract: An optical waveguide provided on a substrate, which comprises a core for transmitting light and a clad formed around the core, wherein the clad is made of a fluorinated alicyclic structure-containing polymer having functional groups.Type: GrantFiled: May 18, 2001Date of Patent: December 3, 2002Assignee: Asahi Glass Company Ltd.Inventors: Katsumi Suzuki, Ikuo Matsukura
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Patent number: 6337379Abstract: A fluorine-containing polymer composition comprising a fluorine-containing solvent of the formula R1—O—R2 wherein R1 is a C5-12 linear or branched polyfluoroalkyl group which may have an ether bond, and R2 is a C1-5 linear or branched alkyl group, and a fluorine-containing amorphous polymer having a fluorine-containing ring structure in its main chain, dissolved in the solvent.Type: GrantFiled: June 29, 2001Date of Patent: January 8, 2002Assignee: Asahi Glass Company Ltd.Inventors: Ikuo Matsukura, Naoko Shirota
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Publication number: 20010051700Abstract: A fluorine-containing polymer composition comprising a fluorine-containing solvent of the formula R1—O—R2 wherein R1 is a C5-12 linear or branched polyfluoroalkyl group which may have an ether bond, and R2 is a C1-5 linear or branched alkyl group, and a fluorine-containing amorphous polymer having a fluorine-containing ring structure in its main chain, dissolved in the solvent.Type: ApplicationFiled: June 29, 2001Publication date: December 13, 2001Applicant: ASAHI GLASS COMPANY LTD.Inventors: Ikuo Matsukura, Naoko Shirota
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Publication number: 20010028778Abstract: An optical waveguide provided on a substrate, which comprises a core for transmitting light and a clad formed around the core, wherein the clad is made of a fluorinated alicyclic structure-containing polymer having functional groups.Type: ApplicationFiled: May 18, 2001Publication date: October 11, 2001Applicant: Asahi Glass Company, Ltd.Inventors: Katsumi Suzuki, Ikuo Matsukura