Patents by Inventor Michiyori Miura
Michiyori Miura 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: 8144398Abstract: A polarizing element includes fine metal particles formed in numerous regions that were occupied by respective substantially needle-like metal halide fine particles before reduction that are oriented and dispersed in a glass substrate such that the lengthwise directions thereof are almost the same, the fine metal particles being produced by heat-treating the glass substrate in a reducing atmosphere to reduce the substantially needle-like metal halide fine particles. The number of fine metal particles present in at least some of the numerous regions is two or more in each region, 90% or more of the regions each have a volume of 2,500 to 2,500,000 nm3, and the individual volumes of the fine metal particles present in each region are 4 to 40% of the volume of the region in 90% or more of the total number of the regions.Type: GrantFiled: January 31, 2011Date of Patent: March 27, 2012Assignee: Hoya Candeo Optronics CorporationInventors: Yoshitaka Yoneda, Michiyori Miura, Toshiaki Sonehara
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Patent number: 8130447Abstract: A polarization element has a polarizer with an aggregate of metal pieces: Plasmon resonance frequency of a metal piece varies according to the polarization direction of a irradiated on it. In the polarization element, the plasmon resonance frequency in a predetermined direction of a metal piece is substantially equal to the frequency of light irradiated on the polarization element. The real part and the imaginary part of permittivity at the plasmon resonance frequency of a metal piece's constituent material and the refractive index (na) of a dielectric layer satisfy a particular relation.Type: GrantFiled: September 15, 2010Date of Patent: March 6, 2012Assignee: Hoya CorporationInventors: Michiyori Miura, Toshiaki Sonehara, Hideo Kobayashi, Mitsuhiro Kureishi
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Patent number: 8064135Abstract: Provided is a polarizing element, which is made into an assembly of metal elements by utilizing the fact that the plasmon resonance wavelengths of metal elements are different for the polarization direction of a light to irradiate the metal elements. The sum of the geometrically sectional areas of the metal elements in a plane substantially normal to the propagation direction of the irradiating light is smaller than the area of the irradiated region of the light, and the sum of the absorbing sectional areas of the metal elements in the plasmon resonance wavelengths is five times or more as large as the area of the irradiated region.Type: GrantFiled: September 3, 2010Date of Patent: November 22, 2011Assignee: Hoya CorporationInventors: Toshiaki Sonehara, Seiichi Yokoyama, Michiyori Miura
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Publication number: 20110181953Abstract: A polarizing element includes fine metal particles formed in numerous regions that were occupied by respective substantially needle-like metal halide fine particles before reduction that are oriented and dispersed in a glass substrate such that the lengthwise directions thereof are almost the same, the fine metal particles being produced by heat-treating the glass substrate in a reducing atmosphere to reduce the substantially needle-like metal halide fine particles. The number of fine metal particles present in at least some of the numerous regions is two or more in each region, 90% or more of the regions each have a volume of 2,500 to 2,500,000 nm3, and the individual volumes of the fine metal particles present in each region are 4 to 40% of the volume of the region in 90% or more of the total number of the regions.Type: ApplicationFiled: January 31, 2011Publication date: July 28, 2011Applicant: HOYA CANDEO OPTRONICS CORPORATIONInventors: Yoshitaka YONEDA, Michiyori Miura, Toshiaki Sonehara
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Patent number: 7961394Abstract: A polarizing glass includes shape-anisotropic metal particles oriented and dispersed in a glass substrate, the concentration of the metal particles having a distribution in which in the travel direction of light in which a polarizing function is exhibited, the concentration is substantially zero near one of the surfaces of the glass substrate and near the other surface, gradually increases from one of the surfaces of the glass substrate to the other surface, becomes a value within a predetermined range in the glass substrate, and then gradually decreases toward the other surface.Type: GrantFiled: March 26, 2009Date of Patent: June 14, 2011Assignee: Hoya Candeo Optronics CorporationInventors: Yoshitaka Yoneda, Michiyori Miura, Seiichi Yokoyama
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Publication number: 20110002026Abstract: Disclosed is a polarization element which, by utilizing the fact that the plasmon resonance frequency of a metal piece varies according to the polarization direction of a light irradiated on the metal piece, is constituted by a polarizer comprising such an aggregate of metal pieces that the plasmon resonance frequency in a predetermined direction of a metal piece is substantially equal to the frequency of light irradiated on a polarization element, and the real part and the imaginary part of permittivity at the plasmon resonance frequency of a metal material constituting the metal piece and the refractive index (na) of a dielectric layer satisfy a particular relation.Type: ApplicationFiled: September 15, 2010Publication date: January 6, 2011Applicant: HOYA CORPORATIONInventors: Michiyori Miura, Toshiaki Sonehara, Hideo Kobayashi, Mitsuhiro Kureishi
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Publication number: 20100328771Abstract: Provided is a polarizing element, which is made into an assembly of metal elements by utilizing the fact that the plasmon resonance wavelengths of metal elements are different for the polarization direction of a light to irradiate the metal elements. The sum of the geometrically sectional areas of the metal elements in a plane substantially normal to the propagation direction of the irradiating light is smaller than the area of the irradiated region of the light, and the sum of the absorbing sectional areas of the metal elements in the plasmon resonance wavelengths is five times or more as large as the area of the irradiated region.Type: ApplicationFiled: September 3, 2010Publication date: December 30, 2010Applicant: HOYA CORPORATIONInventors: Toshiaki SONEHARA, Seiichi Yokoyama, Michiyori Miura
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Publication number: 20100284074Abstract: A polarizing glass includes shape-anisotropic metal particles oriented and dispersed in a glass substrate, the concentration of the metal particles having a distribution in which in the travel direction of light in which a polarizing function is exhibited, the concentration is substantially zero near one of the surfaces of the glass substrate and near the other surface, gradually increases from one of the surfaces of the glass substrate to the other surface, becomes a value within a predetermined range in the glass substrate, and then gradually decreases toward the other surface.Type: ApplicationFiled: March 26, 2009Publication date: November 11, 2010Applicant: Hoya Candeo Optronics CorporationInventors: Yoshitaka Yoneda, Michiyori Miura, Seiichi Yokoyama
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Patent number: 4980788Abstract: A thin-film-type magnetic head device for magnetically recording and/or reproducing signals in and from a magnetic recording medium has a lower magnetic layer, an insulating layer, a thin-film-type coil and an upper magnetic layer which are formed sequentially on a substrate such that a magnetic circuit is formed by the upper and lower magnetic layers. The upper and lower magnetic layers partially abut each other to provide a magnetic coupling therebetween. At least one slit formed in the region where the upper and lower magnetic layers abut each other, so as to suppress generation of eddy currents in the magnetic layers in the region.Type: GrantFiled: January 4, 1989Date of Patent: December 25, 1990Assignee: Hitachi, Ltd.Inventors: Masamichi Yamada, Katsuo Konishi, Michiyori Miura
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Patent number: 4201964Abstract: To eliminate disturbance signals caused by the reflection from the unitary stem areas of comb-like electrodes of an interdigital transducer in an elastic surface wave device, the edges of the unitary stem areas perpendicular to the surface wave propagating direction includes at least one pair of partial edges, the positions of the partial edges in each of the at least one pair of partial edges differ by (2n+1).multidot..lambda./4 from each other in the surface wave propagating direction, and the lengths of the partial edges in the each pair are equal to each other, where n represents zero or a positive integer and .lambda. represents the wavelength of the elastic surface.Type: GrantFiled: June 20, 1978Date of Patent: May 6, 1980Assignee: Hitachi, Ltd.Inventors: Yoshihiko Noro, Katashi Hazama, Jun Yamada, Hitoshi Yanagihara, Michiyori Miura
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Patent number: 4188596Abstract: An elastic surface wave device for use as an electronic element such as a delay line or a filter in home-use electronic apparatus such as color television receivers and radio receivers and in industrial electronic apparatus such as electrical communication units.Type: GrantFiled: March 7, 1978Date of Patent: February 12, 1980Assignee: Hitachi, Ltd.Inventor: Michiyori Miura