Patents by Inventor Takahira Miyagi
Takahira Miyagi 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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Publication number: 20220390825Abstract: An electroconductive-film-coated substrate includes a glass substrate and an electroconductive film disposed on one main surface of the glass substrate. The electroconductive film has an inclined portion in a peripheral edge. A distance from a position in the inclined portion where a thickness of the electroconductive film is 10% of a film thickness of a center of the electroconductive film to an edge end of the glass substrate is 3.00 mm or less. A distance from an end of the inclined portion to the edge end of the glass substrate is longer than 0.00 mm.Type: ApplicationFiled: May 24, 2022Publication date: December 8, 2022Applicant: AGC Inc.Inventors: Sotaro NAKAMURA, Masayoshi MIZOGUCHI, Takeshi TOMIZAWA, Takahira MIYAGI, Ryusuke MORITA
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Publication number: 20210349387Abstract: A reflective mask blank includes a substrate and, disposed on or above the substrate in the following order from the substrate side, a reflective layer, a protective layer, and an absorbent layer. The reflective layer is a multilayered reflective film includes a plurality of cycles, each cycle including a high-refractive-index layer and a low-refractive-index layer. The reflective layer includes one phase inversion layer which is either the high-refractive-index layer or the low-refractive-index layer each having a film thickness increased by ?d ([unit: nm]). The increase in film thickness ?d [unit: nm] of the phase inversion layer satisfies a relationship: (¼+m/2)×13.53?1.0??d?(¼+m/2)×13.53+1.0. The reflective layer and the absorbent layer satisfy a relationship: Tabs+80 tanh(0.037NML)?1.6 exp(?0.08Ntop)(NML?Ntop)2<140.Type: ApplicationFiled: July 20, 2021Publication date: November 11, 2021Applicant: AGC Inc.Inventors: Hiroyoshi TANABE, Takahira MIYAGI
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Patent number: 8730575Abstract: Disclosed are a wire grid polarizer, which exhibits high polarization, p-polarized light transmittance, and s-polarized light reflectance in the visible light region, and the optical characteristics of which have low angular dependence and wavelength dependence, and a manufacturing method for the same.Type: GrantFiled: October 22, 2012Date of Patent: May 20, 2014Assignee: Asahi Glass Company, LimitedInventors: Yuriko Kaida, Hiroshi Sakamoto, Takahira Miyagi, Hiromi Sakurai, Yasuhiro Ikeda, Eiji Shidoji
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Patent number: 8709317Abstract: To provide a mold for nanoimprinting capable of accurately transcribing a fine concavo-convex structure, available at a low cost and having high durability, its production process, and processes for producing a molded resin having a fine concavo5 convex structure on its surface having the fine concavo-convex structure of the mold accurately transcribed, and a wire-grid polarizer, with high productivity. A mold 10 for nanoimprinting having on its mold surface a fine concavo-convex structure comprising a plurality of grooves 14 formed in parallel with one another at a constant pitch, which comprises a mold base 12 made of a resin having on its surface a 10 fine concavo-convex structure to be the base of the fine concavo-convex structure, a metal oxide layer 16 covering the surface having the fine concavo-convex structure of the mold base 12, and a release layer 18 covering the surface of the metal oxide layer 16, is used.Type: GrantFiled: May 8, 2012Date of Patent: April 29, 2014Assignee: Asahi Glass Company, LimitedInventors: Yuriko Kaida, Hiroshi Sakamoto, Takahira Miyagi, Kosuke Takayama, Eiji Shidoji
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Patent number: 8445058Abstract: Provided is a process for easily producing a wire grid polarizer showing a high polarization separation ability in the visible light region and having an improved transmittance in a short wavelength region.Type: GrantFiled: October 7, 2010Date of Patent: May 21, 2013Assignee: Asahi Glass Company, LimitedInventors: Yuriko Kaida, Hiroshi Sakamoto, Takahira Miyagi, Hiromi Sakurai, Yasuhiro Ikeda, Eiji Shidoji, Masako Kawamoto
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Publication number: 20120247950Abstract: To provide a mold for nanoimprinting capable of accurately transcribing a fine concavo-convex structure, available at a low cost and having high durability, its production process, and processes for producing a molded resin having a fine concavo5 convex structure on its surface having the fine concavo-convex structure of the mold accurately transcribed, and a wire-grid polarizer, with high productivity. A mold 10 for nanoimprinting having on its mold surface a fine concavo-convex structure comprising a plurality of grooves 14 formed in parallel with one another at a constant pitch, which comprises a mold base 12 made of a resin having on its surface a 10 fine concavo-convex structure to be the base of the fine concavo-convex structure, a metal oxide layer 16 covering the surface having the fine concavo-convex structure of the mold base 12, and a release layer 18 covering the surface of the metal oxide layer 16, is used.Type: ApplicationFiled: May 8, 2012Publication date: October 4, 2012Inventors: Yuriko KAIDA, Hiroshi Sakamoto, Takahira Miyagi, Kosuke Takayama, Eiji Shidoji
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Publication number: 20110286094Abstract: Provided are a wire-grid polarizer, which has not only a high degree of polarization, a high p-polarized light transmittance and a high s-polarized light reflectance but also a low angle dependency and a low wavelength dependency in terms of optical properties in a visible light region, and a process for producing the same.Type: ApplicationFiled: July 28, 2011Publication date: November 24, 2011Inventors: Yuriko Kaida, Hiroshi Sakamoto, Takahira Miyagi, Hiromi Sakurai, Yasuhiro Ikeda, Eiji Shidoji
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Publication number: 20110096396Abstract: A wire-grid polarizer having a high polarization separation ability in the visible light region and an improved transmittance in a short wavelength region, and a process for easily producing such a wire-grid polarizer, are provided. A wire-grid polarizer 10 comprising a light-transmitting substrate 14 having a surface on which a plurality of ridges 12 are formed in parallel with one another at a predetermined pitch; an underlayer 22 made of a metal oxide and present at least on a top portion of each ridge 12; and a metal wire made of a metal layer 24 and present on a surface of the underlayer 22 to cover at least a top portion of each ridge 12.Type: ApplicationFiled: January 7, 2011Publication date: April 28, 2011Inventors: Yuriko KAIDA, Hiroshi Sakamoto, Takahira Miyagi, Kosuke Takayama, Hiromi Sakurai, Eiji Shidoji
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Publication number: 20110084424Abstract: To provide a mold for nanoimprinting capable of accurately transcribing a fine concavo-convex structure, available at a low cost and having high durability, its production process, and processes for producing a molded resin having a fine concavo-convex structure on its surface having the fine concavo-convex structure of the mold accurately transcribed, and a wire-grid polarizer, with high productivity. A mold 10 for nanoimprinting having on its mold surface a fine concavo-convex structure comprising a plurality of grooves 14 formed in parallel with one another at a constant pitch, which comprises a mold base 12 made of a resin having on its surface a fine concavo-convex structure to be the base of the fine concavo-convex structure, a metal oxide layer 16 covering the surface having the fine concavo-convex structure of the mold base 12, and a release layer 18 covering the surface of the metal oxide layer 16, is used.Type: ApplicationFiled: December 3, 2010Publication date: April 14, 2011Inventors: Yuriko Kaida, Hiroshi Sakamoto, Takahira Miyagi, Kosuke Takayama, Eiji Shidoji
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Publication number: 20110080640Abstract: Provided is a wire grid polarizer showing a high degree of polarization, a high p-polarized light transmittance and a high s-polarized light reflectivity for light incident from a front surface and showing a low s-polarized light reflectivity for light incident from its rear surface, in the visible light region, and a process for producing such a polarizer.Type: ApplicationFiled: September 30, 2010Publication date: April 7, 2011Inventors: Yuriko KAIDA, Hiroshi Sakamoto, Takahira Miyagi, Hiromi Sakurai, Yasuhiro Ikeda, Eiji Shidoji, Masako Kawamoto
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Publication number: 20110052802Abstract: Provided is a process for easily producing a wire grid polarizer showing a high polarization separation ability in the visible light region and having an improved transmittance in a short wavelength region. On a light-transmitting substrate 14 having a surface on which a plurality of ridges 12 are formed, an underlayer 22, first fine metallic wires 24 and second fine metallic wires 30 are formed by a vapor deposition method satisfying the conditions (A) to (F). (A) The underlayer material was vapor-deposited on a top face 16 and a first side face 18 of each ridge 12 from a direction of an angle ?L. (B) The underlayer material is vapor-deposited on the top face of a first underlayer 22a and a second side face 20 from a direction of an angle of ?R on the opposite side to that of the condition (A). (C) ?L and ?R are from 60° to 90°. (D) The height Hma1 of the underlayer 22 is from 1 to 20 nm.Type: ApplicationFiled: October 7, 2010Publication date: March 3, 2011Inventors: Yuriko Kaida, Hiroshi Sakamoto, Takahira Miyagi, Hiromi Sakurai, Yasuhiro Ikeda, Eiji Shidoji, Masako Kawamoto
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Patent number: 7638184Abstract: To provide a laminated glass for a vehicle window which can prevent the temperature increase in a vehicle. A laminated glass for a vehicle window which comprises a glass plate 12 to be disposed on the car exterior side when the laminated glass 1 is assembled in a vehicle, and an infrared reflection film 21 provided on the side of an infrared shielding interlayer 30 having infrared shielding fine particles dispersed therein, of the glass plate 12, wherein the reflectance to light at all wavelengths of from 900 to 1,100 nm is from 30 to 50%, the absorptivity to light at all wavelengths of from 1,100 to 1,300 nm is from 35 to 60%, and the transmittance to light at all wavelengths of from 900 to 1,500 nm is at most 30%.Type: GrantFiled: February 19, 2008Date of Patent: December 29, 2009Assignee: Asahi Glass Company, LimitedInventors: Kazuya Yaoita, Takahira Miyagi, Yoshihito Katayama, Yukio Kimura
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Patent number: 7629040Abstract: To provide a laminated glass for a vehicle window which can prevent the temperature increase in a vehicle. An infrared reflection glass plate which is a glass plate with an infrared reflection film, wherein the infrared reflection film has a stacked coating film (X) having a coating film (1) made of a high refractive index inorganic material having a refractive index of at least 1.90 and a coating film (2) made of a low refractive index inorganic material having a refractive index of at most 1.56 alternately stacked in this order from the glass plate side; the total number of the coating film (1) and the coating film (2) is at least 3; and the geometrical thickness of the coating film (1) is from 70 to 150 nm and the geometrical thickness of the coating film (2) is from 100 to 200 nm.Type: GrantFiled: February 13, 2008Date of Patent: December 8, 2009Assignee: Asahi Glass Company, LimitedInventors: Kazuya Yaoita, Takahira Miyagi, Yoshihito Katayama, Yukio Kimura
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Publication number: 20080206533Abstract: To provide a laminated glass for a vehicle window which can prevent the temperature increase in a vehicle. A laminated glass for a vehicle window which comprises a glass plate 12 to be disposed on the car exterior side when the laminated glass 1 is assembled in a vehicle, and an infrared reflection film 21 provided on the side of an infrared shielding interlayer 30 having infrared shielding fine particles dispersed therein, of the glass plate 12, wherein the reflectance to light at all wavelengths of from 900 to 1,100 nm is from 30 to 50%, the absorptivity to light at all wavelengths of from 1,100 to 1,300 nm is from 35 to 60%, and the transmittance to light at all wavelengths of from 900 to 1,500 nm is at most 30%.Type: ApplicationFiled: February 19, 2008Publication date: August 28, 2008Applicant: ASAHI GLASS CO., LTD.Inventors: Kazuya YAOITA, Takahira Miyagi, Yoshihito Katayama, Yukio Kimura
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Publication number: 20080199671Abstract: A glass substrate with antireflection film is provided, which has sufficient antireflection performance for obliquely incident light, high visible light transmittance, sufficient abrasion resistance and good transmittance for electromagnetic waves, which is sufficiently durable against heat treatment in the production process, to which treatment after film-forming is applicable, and which has smaller number of films and thus is producible at low cost. A glass sheet with antireflection film, comprising a glass sheet and an antireflection film composed of at least two layers and provided on a surface of the glass sheet, wherein the antireflection film comprises a film (a) made of a high refractive index material having a refractive index of from 1.8 to 2.6 and an extinction coefficient of from 0.01 to 0.65 in a wavelength region of from 380 to 780 nm, and a film (b) made of a low refractive index material having a refractive index of at most 1.Type: ApplicationFiled: February 14, 2008Publication date: August 21, 2008Applicant: Asahi Glass Company, LimitedInventors: Takahira MIYAGI, Yoshihito KATAYAMA, Yukio KIMURA
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Publication number: 20080199670Abstract: To provide a laminated glass for a vehicle window which can prevent the temperature increase in a vehicle. An infrared reflection glass plate which is a glass plate with an infrared reflection film, wherein the infrared reflection film has a stacked coating film (X) having a coating film (1) made of a high refractive index inorganic material having a refractive index of at least 1.90 and a coating film (2) made of a low refractive index inorganic material having a refractive index of at most 1.56 alternately stacked in this order from the glass plate side; the total number of the coating film (1) and the coating film (2) is at least 3; and the geometrical thickness of the coating film (1) is from 70 to 150 nm and the geometrical thickness of the coating film (2) is from 100 to 200 nm.Type: ApplicationFiled: February 13, 2008Publication date: August 21, 2008Applicant: Asahi Glass Company, LimitedInventors: Kazuya YAOITA, Takahira Miyagi, Yoshihito Katayama, Yukio Kimura