Patents by Inventor Ryoko Horie
Ryoko Horie 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: 9110176Abstract: Provided is a radiation detecting element, including: needle crystal scintillators and a protruding pattern in which: one end of the needle crystal scintillators is in contact with of upper surfaces of the multiple protrusions; a gap corresponding to a gap between the multiple protrusions is provided between portions of the needle crystal scintillators in contact with the upper surfaces of the multiple protrusions; and a number of the needle crystal scintillators in contact with one of the upper surfaces is 5 or less. Conventionally, since the needle crystals exhibit a state of a polycrystalline film in an early stage of vapor deposition, and light also spreads in a horizontal direction, the light received by a photodetector portion and the spatial resolution was lower than ideal values. The present invention enables the deviating region to be the ideal state in an early stage of growth.Type: GrantFiled: May 16, 2012Date of Patent: August 18, 2015Assignee: CANON KABUSHIKI KAISHAInventors: Tomoyuki Oike, Nobuhiro Yasui, Toru Den, Yoshihiro Ohashi, Ryoko Horie
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Publication number: 20140319362Abstract: In a scintillator used for radiation detection, such as an X-ray CT scanner, a scintillation crystal body having a unidirectional phase separation structure is provided which has a light guide function for crosstalk prevention without using partitions. The phase separation structure includes a first crystal phase and a second crystal phase having a refractive index larger than that of the first crystal phase and which have a first principal surface and a second principal surface, these principal surfaces being not located on the same plane, the first principal surface and the second principal surface have portions to which the second crystal phase is exposed, and a portion of the second crystal phase exposed to the first principal surface and a portion of the second crystal phase exposed to the second principal surface are connected to each other.Type: ApplicationFiled: December 19, 2013Publication date: October 30, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Nobuhiro Yasui, Yoshihiro Ohashi, Toru Den, Ryoko Horie
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Patent number: 8741110Abstract: A method of forming a film, including the steps of preparing a base plate having a first region and a second region comprised of mutually different materials wherein at least one of the materials is an oxide and selectively conducting a film deposition on either one of the first region and the second region by a bias sputtering. Both the first and second regions can be formed of an oxide. Further, provided is a vapor film deposition method including irradiating a substrate having a plurality of regions of different constituent element groups composed of at least one element with a source material element group composed of at least one element to be deposited and ionized elements.Type: GrantFiled: April 30, 2007Date of Patent: June 3, 2014Assignee: Canon Kabushiki KaishaInventors: Nobuhiro Yasui, Ryoko Horie, Toru Den
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Patent number: 8674309Abstract: In a scintillator used for radiation detection, such as an X-ray CT scanner, a scintillation crystal body having a unidirectional phase separation structure is provided which has a light guide function for crosstalk prevention without using partitions. The phase separation structure includes a first crystal phase and a second crystal phase having a refractive index larger than that of the first crystal phase and which have a first principal surface and a second principal surface, these principal surfaces being not located on the same plane, the first principal surface and the second principal surface have portions to which the second crystal phase is exposed, and a portion of the second crystal phase exposed to the first principal surface and a portion of the second crystal phase exposed to the second principal surface are connected to each other.Type: GrantFiled: January 12, 2011Date of Patent: March 18, 2014Assignee: Canon Kabushiki KaishaInventors: Nobuhiro Yasui, Yoshihiro Ohashi, Toru Den, Ryoko Horie
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Publication number: 20140034839Abstract: Provided is a scintillator used for detecting radiation in an X-ray CT scanner or the like, the scintillator having a unidirectional phase separation structure having an optical waveguide function, which eliminates the need of formation of partition walls for preventing crosstalks. The scintillator has the phase separation structure including: a first crystal phase including multiple columnar crystals having unidirectionality; and a second crystal phase filling space on the side of the first crystal phase. The second crystal phase includes a material represented by Cs3Cu2[XaY1-a]5, where X and Y are elements which are different from each other and which are selected from the group consisting of I, Br, and Cl, and 0?a?1 is satisfied.Type: ApplicationFiled: October 8, 2013Publication date: February 6, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Ryoko Horie, Nobuhiro Yasui, Yoshihiro Ohashi, Toru Den
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Patent number: 8637825Abstract: In a scintillator used for radiation detection, such as an X-ray CT scanner, a scintillation crystal body having a unidirectional phase separation structure is provided which has a light guide function for crosstalk prevention without using partitions. The phase separation structure includes a first crystal phase and a second crystal phase having a refractive index larger than that of the first crystal phase and which have a first principal surface and a second principal surface, these principal surfaces being not located on the same plane, the first principal surface and the second principal surface have portions to which the second crystal phase is exposed, and a portion of the second crystal phase exposed to the first principal surface and a portion of the second crystal phase exposed to the second principal surface are connected to each other.Type: GrantFiled: January 12, 2011Date of Patent: January 28, 2014Assignee: Canon Kabushiki KaishaInventors: Nobuhiro Yasui, Yoshihiro Ohashi, Toru Den, Ryoko Horie
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Patent number: 8586931Abstract: Provided is a scintillator used for detecting radiation in an X-ray CT scanner or the like, the scintillator having a unidirectional phase separation structure having an optical waveguide function, which eliminates the need of formation of partition walls for preventing crosstalks. The scintillator has the phase separation structure including: a first crystal phase including multiple columnar crystals having unidirectionality; and a second crystal phase filling space on the side of the first crystal phase. The second crystal phase includes a material represented by Cs3Cu2[XaY1-a]5, where X and Y are elements which are different from each other and which are selected from the group consisting of I, Br, and Cl, and 0?a?1 is satisfied.Type: GrantFiled: July 3, 2012Date of Patent: November 19, 2013Assignee: Canon Kabushiki KaishaInventors: Ryoko Horie, Nobuhiro Yasui, Yoshihiro Ohashi, Toru Den
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Publication number: 20130015357Abstract: Provided is a scintillator used for detecting radiation in an X-ray CT scanner or the like, the scintillator having a unidirectional phase separation structure having an optical waveguide function, which eliminates the need of formation of partition walls for preventing crosstalks. The scintillator has the phase separation structure including: a first crystal phase including multiple columnar crystals having unidirectionality; and a second crystal phase filling space on the side of the first crystal phase. The second crystal phase includes a material represented by Cs3Cu2[XaY1-a]5, where X and Y are elements which are different from each other and which are selected from the group consisting of I, Br, and Cl, and 0?a?1 is satisfied.Type: ApplicationFiled: July 3, 2012Publication date: January 17, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Ryoko Horie, Nobuhiro Yasui, Yoshihiro Ohashi, Toru Den
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Patent number: 8344328Abstract: A position detector includes a photodetector having photodetecting elements; and a scintillator crystal having uniaxial optical anisotropy. The scintillator crystal is continuous in a uniaxial direction, is disposed on the photodetector such that the uniaxial direction is not perpendicular to the normal to a photodetecting surface, and has a length at least three times the pitch of the photodetecting elements. The uniaxial anisotropy allows at least 4% of scintillation light emitted from a region farthest above the photodetecting surface to reach the photodetecting elements, and allows from 4% to 35% of scintillation light emitted from a region closest to the photodetecting surface to reach the photodetecting elements.Type: GrantFiled: August 19, 2011Date of Patent: January 1, 2013Assignee: Canon Kabushiki KaishaInventors: Toru Den, Tatsuya Saito, Nobuhiro Yasui, Ryoko Horie
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Publication number: 20120312999Abstract: Provided is a radiation detecting element, including: needle crystal scintillators and a protruding pattern in which: one end of the needle crystal scintillators is in contact with of upper surfaces of the multiple protrusions; a gap corresponding to a gap between the multiple protrusions is provided between portions of the needle crystal scintillators in contact with the upper surfaces of the multiple protrusions; and a number of the needle crystal scintillators in contact with one of the upper surfaces is 5 or less. Conventionally, since the needle crystals exhibit a state of a polycrystalline film in an early stage of vapor deposition, and light also spreads in a horizontal direction, the light received by a photodetector portion and the spatial resolution was lower than ideal values. The present invention enables the deviating region to be the ideal state in an early stage of growth.Type: ApplicationFiled: May 16, 2012Publication date: December 13, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Tomoyuki Oike, Nobuhiro Yasui, Toru Den, Yoshihiro Ohashi, Ryoko Horie
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Patent number: 8329001Abstract: To provide a filmy structure of a nanometer size having a phase-separated structure effective for the case where a compound can be formed between two kinds of materials. A structure constituted by a first member containing a compound between an element A except both Si and Ge and SinGe1-n (where 0?n?1) and a second member containing one of the element A and SinGe1-n (where 0?n?1), in which one of the first member and the second member is a columnar member, formed on a substrate, whose side face is surrounded by the other member, the ratio Dl/Ds of an average diameter Dl in the major axis direction to an average diameter Ds in the minor axis direction of a transverse sectional shape of the columnar member is less than 5, and the element A is one of Li, Na, Mg, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Rb, Sr, Y, Zr, Nb, Mo, Ru, Rh, Pd, Cs, Ba, La, Hf, Ta, W, Re, Os, Ir, Pt, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and B.Type: GrantFiled: February 29, 2008Date of Patent: December 11, 2012Assignee: Canon Kabushiki KaishaInventors: Nobuhiro Yasui, Ryoko Horie, Toru Den
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Publication number: 20120292516Abstract: In a scintillator used for radiation detection, such as an X-ray CT scanner, a scintillation crystal body having a unidirectional phase separation structure is provided which has a light guide function for crosstalk prevention without using partitions. The phase separation structure includes a first crystal phase and a second crystal phase having a refractive index larger than that of the first crystal phase and which have a first principal surface and a second principal surface, these principal surfaces being not located on the same plane, the first principal surface and the second principal surface have portions to which the second crystal phase is exposed, and a portion of the second crystal phase exposed to the first principal surface and a portion of the second crystal phase exposed to the second principal surface are connected to each other.Type: ApplicationFiled: January 12, 2011Publication date: November 22, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Nobuhiro Yasui, Yoshihiro Ohashi, Toru Den, Ryoko Horie
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Patent number: 8138011Abstract: A method of manufacturing a radiation-detecting device including spaced first columnar scintillators, second columnar scintillators which are located between the neighboring first columnar scintillators and which are spaced from the first columnar scintillators, and photodetecting elements overlapping with the first columnar scintillators includes a step of preparing the substrate such that the substrate has a surface having an uneven section having protruding portions and a plurality of spaced flat sections surrounded by the uneven section and also includes a step of forming the first columnar scintillators and the second columnar scintillators on the flat sections and the protruding portions, respectively, by depositing a scintillator material on the substrate having the uneven section and the flat sections. The uneven section has recessed portions and satisfies the following inequality: h/d?1 where h is the depth of each recessed portion and d is the distance between the protruding portions.Type: GrantFiled: March 25, 2011Date of Patent: March 20, 2012Assignee: Canon Kabushiki KaishaInventors: Tatsuya Saito, Ryoko Horie, Nobuhiro Yasui, Toru Den
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Patent number: 8133538Abstract: A method of producing a mold having an uneven structure and a mold for an optical element are provided. The method includes forming on a nickel substrate a mixed film using nickel and a material which phase separates from nickel simultaneously, the mixed film including a plurality of cylinders including nickel as a component thereof and a matrix region including the material which phase separates from nickel as a component thereof and surrounding the plurality of cylinders; and removing the matrix portion from the mixed film by etching to give a mold including nickel or a nickel alloy. The uneven structure is disposed in plurality on the substrate, and a pitch of the uneven structure is within a range of 30 nm or more and 500 nm or less and a depth of the uneven structure is within a range of 100 nm or more.Type: GrantFiled: March 15, 2007Date of Patent: March 13, 2012Assignee: Canon Kabushiki KaishaInventors: Ryoko Horie, Yasuhiro Matsuo, Nobuhiro Yasui, Toru Den
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Publication number: 20120049073Abstract: A position detector includes a photodetector having photodetecting elements; and a scintillator crystal having uniaxial optical anisotropy. The scintillator crystal is continuous in a uniaxial direction, is disposed on the photodetector such that the uniaxial direction is not perpendicular to the normal to a photodetecting surface, and has a length at least three times the pitch of the photodetecting elements. The uniaxial anisotropy allows at least 4% of scintillation light emitted from a region farthest above the photodetecting surface to reach the photodetecting elements, and allows from 4% to 35% of scintillation light emitted from a region closest to the photodetecting surface to reach the photodetecting elements.Type: ApplicationFiled: August 19, 2011Publication date: March 1, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Toru Den, Tatsuya Saito, Nobuhiro Yasui, Ryoko Horie
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Publication number: 20110248366Abstract: A method of manufacturing a radiation-detecting device including spaced first columnar scintillators, second columnar scintillators which are located between the neighboring first columnar scintillators and which are spaced from the first columnar scintillators, and photodetecting elements overlapping with the first columnar scintillators includes a step of preparing the substrate such that the substrate has a surface having an uneven section having protruding portions and a plurality of spaced flat sections surrounded by the uneven section and also includes a step of forming the first columnar scintillators and the second columnar scintillators on the flat sections and the protruding portions, respectively, by depositing a scintillator material on the substrate having the uneven section and the flat sections. The uneven section has recessed portions and satisfies the following inequality: h/d?1 where h is the depth of each recessed portion and d is the distance between the protruding portions.Type: ApplicationFiled: March 25, 2011Publication date: October 13, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Tatsuya Saito, Ryoko Horie, Nobuhiro Yasui, Toru Den
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Patent number: 7700219Abstract: The present invention provides a new method for producing a structure having a three-dimensional network skeleton. The method includes providing a film including a first material and a second material and removing the second material contained in the film by dry etching. The first material contains a noble metal and is dispersed in the second material.Type: GrantFiled: August 2, 2006Date of Patent: April 20, 2010Assignee: Canon Kabushiki KaishaInventors: Ryoko Horie, Hiroshi Okura, Nobuhiro Yasui, Toru Den
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Publication number: 20080182014Abstract: To provide a filmy structure of a nanometer size having a phase-separated structure effective for the case where a compound can be formed between two kinds of materials. A structure constituted by a first member containing a compound between an element A except both Si and Ge and SinGe1-n (where 0?n?1) and a second member containing one of the element A and SinGe1-n (where 0?n?1), in which one of the first member and the second member is a columnar member, formed on a substrate, whose side face is surrounded by the other member, the ratio Dl/Ds of an average diameter Dl in the major axis direction to an average diameter Ds in the minor axis direction of a transverse sectional shape of the columnar member is less than 5, and the element A is one of Li, Na, Mg, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Rb, Sr, Y, Zr, Nb, Mo, Ru, Rh, Pd, Cs, Ba, La, Hf, Ta, W, Re, Os, Ir, Pt, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and B.Type: ApplicationFiled: February 29, 2008Publication date: July 31, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Nobuhiro Yasui, Ryoko Horie, Toru Den
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Patent number: 7361420Abstract: To provide a filmy structure of a nanometer size having a phase-separated structure effective for the case where a compound can be formed between two kinds of materials. A structure constituted by a first member containing a compound between an element A except both Si and Ge and SinGe1-n (where 0?n?1) and a second member containing one of the element A and SinGe1-n (where 0?n?1), in which one of the first member and the second member is a columnar member, formed on a substrate, whose side face is surrounded by the other member, the ratio Dl/Ds of an average diameter Dl in the major axis direction to an average diameter Ds in the minor axis direction of a transverse sectional shape of the columnar member is less than 5, and the element A is one of Li, Na, Mg, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Rb, Sr, Y, Zr, Nb, Mo, Ru, Rh, Pd, Cs, Ba, La, Hf, Ta, W, Re, Os, Ir, Pt, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and B.Type: GrantFiled: March 23, 2006Date of Patent: April 22, 2008Assignee: Canon Kabushiki KaishaInventors: Nobuhiro Yasui, Ryoko Horie, Toru Den
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Publication number: 20070256925Abstract: A method of forming a film, including the steps of preparing a base plate having a first region and a second region comprised of mutually different materials wherein at least one of the materials is an oxide and selectively conducting a film deposition on either one of the first region and the second region by a bias sputtering. Both the first and second regions can be formed of an oxide. Further, provided is a vapor film deposition method including irradiating a substrate having a plurality of regions of different constituent element groups composed of at least one element with a source material element group composed of at least one element to be deposited and ionized elements.Type: ApplicationFiled: April 30, 2007Publication date: November 8, 2007Applicant: CANON KABUSHIKI KAISHAInventors: NOBUHIRO YASUI, RYOKO HORIE, TORU DEN