Patents by Inventor Yoshihiro Uozu
Yoshihiro Uozu 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: 10352527Abstract: Provided is a luminous, apparatus such as a display, having a function of preventing attraction of insects. A display apparatus 1 has a light emission surface 1 whose peripheral edge region is at least partially formed as a low-attraction region which is less capable of attracting bugs, wherein the low-attraction region is composed of an optical property gradient region whose at least one optical property gradually changes in a direction from an inward side to an outward side of the light emission surface.Type: GrantFiled: September 18, 2015Date of Patent: July 16, 2019Assignee: NATIONAL UNIVERSITY CORPORATION HAMAMATSU UNIVERSITY SCHOOL OF MEDICINEInventors: Yoshihiro Uozu, Takahiko Hariyama, Mantaro Hironaka
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Publication number: 20160010827Abstract: Provided is a luminous, apparatus such as a display, having a function of preventing attraction of insects. A display apparatus 1 has a light emission surface 1 whose peripheral edge region is at least partially formed as a low-attraction region which is less capable of attracting bugs, wherein the low-attraction region is composed of an optical property gradient region whose at least one optical property gradually changes in a direction from an inward side to an outward side of the light emission surface.Type: ApplicationFiled: September 18, 2015Publication date: January 14, 2016Inventors: Yoshihiro UOZU, Takahiko HARIYAMA, Mantaro HIRONAKA
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Publication number: 20150053566Abstract: Disclosed herein are a stamper which has anodized alumina formed on the surface thereof and which will not cause macroscopic unevenness or color unevenness on the transcribed surface; a method for producing the same; and a method for producing a molded material without macroscopic unevenness or color unevenness on the transcribed surface thereof by using such a stamper. The stamper includes alumina which has a microasperity structure and which is formed by anodization on the surface of a prototype aluminum mold having an aluminum purity of 99.5% or more, an average crystal-grain diameter of 1 mm or less, and an arithmetic mean surface roughness Ra of 0.05 ?m or less. The use of this stamper enables the production of a molded material which does not have macroscopic unevenness or color unevenness on the transcribed surface thereof and which is suitable for use as an antireflection article and the like.Type: ApplicationFiled: September 15, 2014Publication date: February 26, 2015Applicants: MITSUBISHI RAYON CO., LTD., NIPPON LIGHT METAL COMPANY, LTD., KANAGAWA ACADEMY OF SCIENCE AND TECHNOLOGYInventors: Katsuhiro KOJIMA, Eiko OKAMOTO, Yoshihiro UOZU, Seiji TONE, Hideki Masuda, Takashi YANAGISHITA, Hiroaki KITA, Hisakazu ITO, Kota SHIRAI, Masayuki SAEKI
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Patent number: 8939752Abstract: A mold comprising alumina having a microscopic pattern, in which distances between adjacent recesses or salients therein are not longer than wavelength of visible light, formed by anodic oxidation on a surface of an aluminum pre-mold without a rolling mark, wherein height or depth difference at a crystal grain boundary is 300 nm or less.Type: GrantFiled: June 28, 2007Date of Patent: January 27, 2015Assignees: Mitsubishi Rayon Co., Ltd., Kanagawa Academy of Science and TechnologyInventors: Yoshihiro Uozu, Eiko Okamoto, Katsuhiro Kojima, Satoshi Sakuma, Hideki Masuda, Takashi Yanagishita
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Patent number: 8828283Abstract: An optical component and a method of producing the same, which optical component is obtained by photopolymerizing a photopolymerizable composition so as to comprise a matrix and numerous columnar structure bodies oriented in one direction within the matrix, wherein the columnar structure bodies differ in refractive index from the matrix and are arrayed in a lattice in the plane perpendicular to said orientation direction to have a highly arrayed structure whose refractive index periodically changes on the order of 80 nm to 1,000 micrometer. The optical component according to the invention is imparted with a structure whose refractive index periodically changes with high regularity on the order of about 80 nm to 1,000 micrometer and, owing to this property, is usable in optical sheet, optical film and other ordinary optical applications.Type: GrantFiled: November 2, 2010Date of Patent: September 9, 2014Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Toshiaki Hattori, Yoshihiro Uozu
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Patent number: 8034434Abstract: The present transparent molded body is a transparent molded body including a transparent substrate and an uneven layer composed of a cured product of an active energy ray-curable composition formed on at least one surface of the transparent substrate, wherein the uneven layer has an uneven structure having a gap between the adjacent convex portions equal to or less than the wavelength of a visible light, the water contact angle of the surface of the uneven layer is equal to or less than 25°, and the modulus of elasticity of the surface of the uneven layer is equal to or more than 200 MPa.Type: GrantFiled: February 8, 2008Date of Patent: October 11, 2011Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Satoshi Sakuma, Eiko Okamoto, Yoshihiro Uozu
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Publication number: 20110042838Abstract: An optical component and a method of producing the same, which optical component is obtained by photopolymerizing a photopolymerizable composition so as to comprise a matrix and numerous columnar structure bodies oriented in one direction within the matrix, wherein the columnar structure bodies differ in refractive index from the matrix and are arrayed in a lattice in the plane perpendicular to said orientation direction to have a highly arrayed structure whose refractive index periodically changes on the order of 80 nm to 1,000 micrometer. The optical component according to the invention is imparted with a structure whose refractive index periodically changes with high regularity on the order of about 80 nm to 1,000 micrometer and, owing to this property, is usable in optical sheet, optical film and other ordinary optical applications.Type: ApplicationFiled: November 2, 2010Publication date: February 24, 2011Applicant: Mitsubishi Rayon Co., Ltd.Inventors: Toshiaki HATTORI, Yoshihiro Uozu
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Publication number: 20100323165Abstract: The present transparent molded body is a transparent molded body including a transparent substrate and an uneven layer composed of a cured product of an active energy ray-curable composition formed on at least one surface of the transparent substrate, wherein the uneven layer has an uneven structure having a gap between the adjacent convex portions equal to or less than the wavelength of a visible light, the water contact angle of the surface of the uneven layer is equal to or less than 25°, and the modulus of elasticity of the surface of the uneven layer is equal to or more than 200 MPa.Type: ApplicationFiled: February 8, 2008Publication date: December 23, 2010Inventors: Satoshi Sakuma, Eiko Okamoto, Yoshihiro Uozu
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Publication number: 20100243458Abstract: Disclosed herein are a stamper which has anodized alumina formed on the surface thereof and which will not cause macroscopic unevenness or color unevenness on the transcribed surface; a method for producing the same; and a method for producing a molded material without macroscopic unevenness or color unevenness on the transcribed surface thereof by using such a stamper. The stamper includes alumina which has a microasperity structure and which is formed by anodization on the surface of a prototype aluminum mold having an aluminum purity of 99.5% or more, an average crystal-grain diameter of 1 mm or less, and an arithmetic mean surface roughness Ra of 0.05 ?m or less. The use of this stamper enables the production of a molded material which does not have macroscopic unevenness or color unevenness on the transcribed surface thereof and which is suitable for use as an antireflection article and the like.Type: ApplicationFiled: October 24, 2008Publication date: September 30, 2010Inventors: Katsuhiro Kojima, Eiko Okamoto, Yoshihiro Uozu, Seiji Tone, Hideki Masuda, Takashi Yanagishita, Hiroaki Kita, Hisakazu Ito, Kota Shirai, Masayuki Saeki
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Publication number: 20100175820Abstract: Linear notch patterns at fixed intervals are formed by contacting blades 6a on a drum 6 with a film F and mechanically transferring the shape of the blades 6a to the film F. The notch pattern is formed to be approximately parallel to the axial direction of the drum 6. When a flexural stress is applied in the direction of the film F transport by passing the film over the bending roll 8 while applying a predetermined tension thereto, crazes or cracks are formed inside the notch patterns, with the notches in the notch patterns serving as starting points thereof. Since crazes or cracks are formed using the notch patterns as starting points, relatively large crazes or cracks can be obtained, and optical characteristics can be controlled at a high level.Type: ApplicationFiled: January 15, 2010Publication date: July 15, 2010Inventors: Yoshihiro Uozu, Jun Nakauchi, Masatoshi Toda, Tetsuya Sawano, Hiroki Hatakeyama
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Publication number: 20090194914Abstract: A mold comprising alumina having a microscopic pattern, in which distances between adjacent recesses or salients therein are not longer than wavelength of visible light, formed by anodic oxidation on a surface of an aluminum pre-mold without a rolling mark, wherein height or depth difference at a crystal grain boundary is 300 nm or less.Type: ApplicationFiled: June 28, 2007Publication date: August 6, 2009Inventors: Yoshihiro Uozu, Eiko Okamoto, Katsuhiro Kojima, Satoshi Sakuma, Hideki Masuda, Takashi Yanagishita
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Publication number: 20080220214Abstract: [Purpose] To provide a light regulating film and a laminated light regulating film with relatively large crazes or cracks, capable of controlling optical properties such as transmissivity and scattering to a high degree, as well as a method for producing a light regulating film and a method for producing a laminated light regulating film. [Constitution] Linear notch patterns at fixed intervals are formed by contacting blades 6a on a drum 6 with a film F and mechanically transferring the shape of the blades 6a to the film F. The notch pattern is formed to be approximately parallel to the axial direction of the drum 6. When a flexural stress is applied in the direction of the film F transport by passing the film over the bending roll 8 while applying a predetermined tension thereto, crazes or cracks are formed inside the notch patterns, with the notches in the notch patterns serving as starting points thereof.Type: ApplicationFiled: April 18, 2008Publication date: September 11, 2008Applicant: Mitsubishi Rayon Co., Ltd.Inventors: Yoshihiro Uozu, Jun Nakauchi, Masatoshi Toda, Tetsuya Sawano, Hiroki Hatayama
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Patent number: 7142754Abstract: This invention relates to a copolymer prepared by polymerizing at least a vinyl compound (A) which gives a homopolymer with a refractive index of 1.50 or more, a fluoroalkyl (meth)acrylate (B) represented by the following formula (1) and methyl methacrylate (C), wherein a weight ratio of monomer (A) component/monomer (B) component ((A)/(B)) in the copolymer is within the range of 0.2 to 1; as well as a plastic optical fiber and a plastic optical fiber cable comprising a clad made of the copolymer. This invention can provide a plastic optical fiber and a plastic optical fiber cable exhibiting a reduced transmission loss, minimizing increase in a transmission loss even when being held as a bobbin-wound form, exhibiting a reduced bend loss and can transmit a wide-band data. (In the above formula, X represents H or CH3; and Rf represents fluoroalkyl having 7 to 14 carbon atoms both inclusive and 13 to 25 fluorine atoms both inclusive.).Type: GrantFiled: December 27, 2000Date of Patent: November 28, 2006Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Yoshihiro Tsukamoto, Yasushi Kawaharada, Kikue Irie, Tetsuya Jigami, Jun Okumura, Yoshihiro Uozu
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Publication number: 20060263583Abstract: An optical component and a method of producing the same, which optical component is obtained by photopolymerizing a photopolymerizable composition so as to comprise a matrix and numerous columnar structure bodies oriented in one direction within the matrix, wherein the columnar structure bodies differ in refractive index from the matrix and are arrayed in a lattice in the plane perpendicular to said orientation direction to have a highly arrayed structure whose refractive index periodically changes on the order of 80 nm to 1,000 micrometer. The optical component according to the invention is imparted with a structure whose refractive index periodically changes with high regularity on the order of about 80 nm to 1,000 micrometer and, owing to this property, is usable in optical sheet, optical film and other ordinary optical applications.Type: ApplicationFiled: July 28, 2006Publication date: November 23, 2006Applicant: Mitsubishi Rayon Co., Ltd.Inventors: Toshiaki Hattori, Yoshihiro Uozu
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Patent number: 7098281Abstract: This invention provides a process for manufacturing a methyl methacrylate polymer comprising the steps of feeding a monomer containing at least 80 wt % of methyl methacrylate and a radical polymerization initiator represented formula (III) to a reactor; polymerizing the material at a polymerization temperature of 110 to 160° C. under the conditions satisfying particular equations between an initiator concentration and a polymerization temperature; feeding a reaction mixture taken out from the reactor to a devolatilization step (feeding step); and separating and removing volatiles from the reaction mixture (devolatilization step).Type: GrantFiled: April 15, 2004Date of Patent: August 29, 2006Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Hirotoshi Mizota, Tomonari Murakami, Yoshihiro Uozu, Shigeaki Sasaki, Koji Ishizaka, Takeshi Kitayama, Tatsuyuki Takayanagi, Jun-ichiro Atarashi, Yasukazu Yoshida, Masaharu Yanai, Motomu Oh-Kita
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Patent number: 7043113Abstract: Disclosed is an optical multi/demultiplexer, which comprises a graded index type light transmission section whose refractive index is continuously reduced in the direction from the center to the periphery thereof, a wavelength-multiplexed-light connecting section disposed at one of the axial ends of the light transmission section, and at least one monochromatic light connecting section disposed at the other axial end of the light transmission section. The wavelength-multiplexed-light connecting section and the monochromatic light connecting section are disposed relative to the light transmission section in such a positional relationship that a monochromatic light included in a wavelength multiplexed light entered from the wavelength-multiplexed-light connecting section into the one end of the light transmission section is emitted from the other end of the light transmission section at a position where the monochromatic light connecting section is disposed.Type: GrantFiled: April 30, 2004Date of Patent: May 9, 2006Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Toshiaki Hattori, Norifumi Hirota, Yoshihiro Uozu
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Publication number: 20050094935Abstract: Disclosed is an optical multi/demultiplexer, which comprises a graded index type light transmission section whose refractive index is continuously reduced in the direction from the center to the periphery thereof, a wavelength-multiplexed-light connecting section disposed at one of the axial ends of the light transmission section, and at least one monochromatic light connecting section disposed at the other axial end of the light transmission section. The wavelength-multiplexed-light connecting section and the monochromatic light connecting section are disposed relative to the light transmission section in such a positional relationship that a monochromatic light included in a wavelength multiplexed light entered from the wavelength-multiplexed-light connecting section into the one end of the light transmission section is emitted from the other end of the light transmission section at a position where the monochromatic light connecting section is disposed.Type: ApplicationFiled: November 24, 2004Publication date: May 5, 2005Applicant: Mitsubishi Rayon Co., Ltd.Inventors: Toshiaki Hattori, Norifumi Hirota, Yoshihiro Uozu
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Publication number: 20040202409Abstract: Disclosed is an optical multi/demultiplexer, which comprises a graded index type light transmission section whose refractive index is continuously reduced in the direction from the center to the periphery thereof, a wavelength-multiplexed-light connecting section disposed at one of the axial ends of the light transmission section, and at least one monochromatic light connecting section disposed at the other axial end of the light transmission section. The wavelength-multiplexed-light connecting section and the monochromatic light connecting section are disposed relative to the light transmission section in such a positional relationship that a monochromatic light included in a wavelength multiplexed light entered from the wavelength-multiplexed-light connecting section into the one end of the light transmission section is emitted from the other end of the light transmission section at a position where the monochromatic light connecting section is disposed.Type: ApplicationFiled: April 30, 2004Publication date: October 14, 2004Applicant: Mitsubishi Rayon Co., Ltd.Inventors: Toshiaki Hattori, Norifumi Hirota, Yoshihiro Uozu
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Publication number: 20040197069Abstract: This invention provides a process for manufacturing a methyl methacrylate polymer comprising the steps of feeding a monomer containing at least 80 wt % of methyl methacrylate and a radical polymerization initiator represented formula (III) to a reactor; polymerizing the material at a polymerization temperature of 110 to 160° C. under the conditions satisfying particular equations between an initiator concentration and a polymerization temperature; feeding a reaction mixture taken out from the reactor to a devolatilization step (feeding step); and separating and removing volatiles from the reaction mixture (devolatilization step). A methyl methacrylate polymer having adequately good optical properties and a plastic optical fiber having improved transmission performance can be prepared according to this invention.Type: ApplicationFiled: April 15, 2004Publication date: October 7, 2004Applicant: Mitsubishi Rayon Co., LimitedInventors: Hirotoshi Mizota, Tomonari Murakami, Yoshihiro Uozu, Shigeaki Sasaki, Koji Ishizaka, Takeshi Kitayama, Tatsuyuki Takayanagi, Jun-ichiro Atarashi, Yasukazu Yoshida, Masaharu Yanai, Motomu Oh-Kita
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Patent number: 6777083Abstract: This invention provides a process for manufacturing a methyl methacrylate polymer comprising the steps of feeding a monomer containing at least 80 wt % of methyl methacrylate and a radical polymerization initiator represented formula (III) to a reactor; polymerizing the material at a polymerization temperature of 110 to 160° C. under the conditions satisfying particular equations between an initiator concentration and a polymerization temperature; feeding a reaction mixture taken out from the reactor to a devolatilization step (feeding step); and separating and removing volatiles from the reaction mixture (devolatilization step). A methyl methacrylate polymer having adequately good optical properties and a plastic optical fiber having improved transmission performance can be prepared according to this invention.Type: GrantFiled: October 12, 2000Date of Patent: August 17, 2004Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Hirotoshi Mizota, Tomonari Murakami, Yoshihiro Uozu, Shigeaki Sasaki, Koji Ishizaka, Takeshi Kitayama, Tatsuyuki Takayanagi, Jun-ichiro Atarashi, Yasukazu Yoshida, Masaharu Yanai, Motomu Oh-Kita