Patents by Inventor Hirofumi Ohtani
Hirofumi Ohtani 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: 11507649Abstract: An optical fingerprint authentication device includes at least a light source and an image sensor and detects diffused light. The light source is an organic electroluminescence panel. The organic electroluminescence panel comprises a light emitting portion region and a light-transmitting non-light emitting portion, the light emitting portion region being shaped by an organic electroluminescence element. A fingerprint information reader having the image sensor arranged at a position adjacent to the non-light emitting portion is provided.Type: GrantFiled: September 30, 2020Date of Patent: November 22, 2022Assignee: MERCK PATENT GMBHInventors: Kazuyoshi Omata, Tsukasa Yagi, Natsuki Yamamoto, Hirofumi Ohtani
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Publication number: 20210011987Abstract: An optical fingerprint authentication device includes at least a light source and an image sensor and detects diffused light. The light source is an organic electroluminescence panel. The organic electroluminescence panel comprises a light emitting portion region and a light-transmitting non-light emitting portion, the light emitting portion region being shaped by an organic electroluminescence element. A fingerprint information reader having the image sensor arranged at a position adjacent to the non-light emitting portion is provided.Type: ApplicationFiled: September 30, 2020Publication date: January 14, 2021Inventors: Kazuyoshi OMATA, Tsukasa YAGI, Natsuki YAMAMOTO, Hirofumi OHTANI
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Patent number: 10853465Abstract: An optical fingerprint authentication device includes at least a light source and an image sensor and detects diffused light. The light source is an organic electroluminescence panel. The organic electroluminescence panel comprises a light emitting portion region and a light-transmitting non-light emitting portion, the light emitting portion region being shaped by an organic electroluminescence element. A fingerprint information reader having the image sensor arranged at a position adjacent to the non-light emitting portion is provided.Type: GrantFiled: September 1, 2016Date of Patent: December 1, 2020Assignee: Merck Patent GmbHInventors: Kazuyoshi Omata, Tsukasa Yagi, Natsuki Yamamoto, Hirofumi Ohtani
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Publication number: 20180357402Abstract: An optical fingerprint authentication device includes at least a light source and an image sensor and detects diffused light. The light source is an organic electroluminescence panel. The organic electroluminescence panel comprises a light emitting portion region and a light-transmitting non-light emitting portion, the light emitting portion region being shaped by an organic electroluminescence element. A fingerprint information reader having the image sensor arranged at a position adjacent to the non-light emitting portion is provided.Type: ApplicationFiled: September 1, 2016Publication date: December 13, 2018Inventors: Kazuyoshi OMATA, Tsukasa YAGI, Natsuki YAMAMOTO, Hirofumi OHTANI
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Patent number: 9929379Abstract: A method for producing an organic electroluminescent element including a transparent substrate, a transparent electrode, an organic functional layer unit, and an electrode counter to the transparent electrode disposed in sequence, the method including: forming a preform of an element satisfying the following expression: ?Exy?0.05, wherein 0° is an angle orthogonal to the transparent substrate and ?Exy represents a chromaticity difference of a reflected color measured at a tilted angle within a range of 0 to 80° with respect to the transparent substrate; and irradiating a specific region of the preform of the element with light.Type: GrantFiled: May 23, 2014Date of Patent: March 27, 2018Assignee: KONICA MINOLTA, INC.Inventors: Yoriko Nakayama, Hirofumi Ohtani
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Publication number: 20160093836Abstract: A method for producing an organic electroluminescent element including a transparent substrate, a transparent electrode, an organic functional layer unit, and an electrode counter to the transparent electrode disposed in sequence, the method including: forming a preform of an element satisfying the following expression: ?Exy?0.05, wherein 0° is an angle orthogonal to the transparent substrate and ?Exy represents a chromaticity difference of a reflected color measured at a tilted angle within a range of 0 to 80° with respect to the transparent substrate; and irradiating a specific region of the preform of the element with light.Type: ApplicationFiled: May 23, 2014Publication date: March 31, 2016Inventors: Yoriko NAKAYAMA, Hirofumi OHTANI
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Publication number: 20040085598Abstract: A digital still camera having an organic image sensor for capturing an image; a lens having an aperture value F; and a shutter having a shutter speed T (sec).Type: ApplicationFiled: September 26, 2003Publication date: May 6, 2004Applicant: Konica CorporationInventors: Noriyuki Kokeguchi, Hirofumi Ohtani
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Patent number: 5541052Abstract: The improved silver halide photographic material has one or more silver halide emulsion layers on a support and at least one of said emulsion layers contains silver halide grains which are of normal crystal form having at least one concave crystal face. This photographic material has not only high sensitivity but also good keeping quality.Type: GrantFiled: November 15, 1994Date of Patent: July 30, 1996Assignee: Konica CorporationInventors: Hiroshi Okusa, Syoji Matsuzaka, Hirofumi Ohtani
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Patent number: 5523202Abstract: A silver halide photographic emulsion comprising silver halide grains which are prepared by a process comprising forming the silver halide grains in the presence of a dispersing medium and chemically sensitizing the silver halide grains formed, wherein, in the step of forming the silver halide grains, at least a part of the dispersing medium is a gelatin having an adenine content of 0.2 .mu.g or less per g of gelatin and the silver halide grains are chemically sensitized in the presence of a compound represented by the following formula.Type: GrantFiled: March 30, 1995Date of Patent: June 4, 1996Assignee: Konica CorporationInventors: Hirofumi Ohtani, Sadayasu Ishikawa, Yoshikazu Ito
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Patent number: 5518874Abstract: A method for manufacturing a silver halide emulsion comprising core/shell type silver iodobromide grains, said emulsion having an average iodide content of 3 mol % or more, each of the grains having two or more phases different in silver iodide content from each other which comprises an inner phase having silver iodide content of 10 mol % or more and an outermost phase having a silver iodide content lower than the iodide content of the inner phase, wherein a compound represented by the following formula [I] is present at least in a process prior to a desalting process:formula [I] ##STR1## wherein Z represents a group of atoms necessary to form a five- or six-membered heterocycle, which may be a condensed ring; and M represents an alkali metal atom or ammonium group.Type: GrantFiled: June 13, 1991Date of Patent: May 21, 1996Assignee: Konica CorporationInventors: Yoshiro Ito, Hirofumi Ohtani, Syoji Matsuzaka
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Patent number: 5362619Abstract: A method for preparing a silver halide photographic emulsion containing silver halide grains , each of which has two or more phases different in the silver halide composition, comprising a step of growing silver halide grains, in which said silver halide grains are grown by supplying a solution of water-soluble silver salt and a solution of water-soluble halide, wherein fine grains of silver halide having a solubility product smaller than that of silver halide grains present in the course of growing silver halide grains are made present in the silver halide emulsion at a time during the grain-growth, iridium ions being individually added at a time when or after starting the grain-growth.Type: GrantFiled: March 1, 1994Date of Patent: November 8, 1994Assignee: Konica CorporationInventors: Kouji Tashiro, Hiroyuki Hoshino, Shuji Murakami, Shoji Matsuzaka, Hirofumi Ohtani
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Patent number: 5362470Abstract: A method for manufacturing an ultrafine gold and/or silver chalcogenide being used for the sensitivity speck seeding sensitization method is disclosed. The gold and/or silver compound, and a water-soluble chalcogenide are mixed into a protective colloid solution under prescribed condition. The light-sensitive photographic material obtained by this method has a high sensitivity and low fog property.Type: GrantFiled: May 27, 1992Date of Patent: November 8, 1994Assignee: Konica CorporationInventors: Haruhiko Masutomi, Naoko Uchida, Hirofumi Ohtani, Kazuyoshi Ichikawa
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Patent number: 5358841Abstract: A method for preparing a silver halide emulsion is disclosed. The silver halide emulsion comprises silver halide grains which are mixed crystals comprising: preparing a seed emulsion comprising seed grains; and adding potentially effective silver iodide grains comprising a silver halide micro grains having .gamma.-AgI structure, a soluble salt and a soluble halide to the seed emulsion.Type: GrantFiled: September 29, 1993Date of Patent: October 25, 1994Assignee: Konica CorporationInventor: Hirofumi Ohtani
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Patent number: 5340710Abstract: A photosensitive silver halide photographic material having a support and, provided thereon, the photographic component layers including at least one silver halide emulsion layer containing silver halide grains (1) having at least two kinds of halogens, is disclosed. The silver halide grains (1) are grown to in a system in the presence of silver halide grains (2) coexisting:with silver halide grains which are growing to the silver halide grains (1),for at least some portion of period that said silver halide grains are growing in the system,and comprising solubility product less than that of said growing silver halide grains.Type: GrantFiled: July 6, 1993Date of Patent: August 23, 1994Assignee: Konica CorporationInventors: Yukio Ohya, Syoji Matsuzaka, Yasushi Irie, Shuji Murakami, Satomi Asano, Hiroshi Okusa, Hirofumi Ohtani
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Patent number: 5334359Abstract: An apparatus for producing sparingly water-soluble salt crystal grains, including a mixing vessel in which a cationic component solution and an anionic component solution are mixed to form a precipitation process solution in which sparingly water-soluble salt grains are produced, wherein the mixing vessel is connected to a reaction chamber through a one-way valve, and the precipitation process solution is injected into the crystal growth process solution through the one-way valve immediately after mixing while stirring the crystal growth process solution.Type: GrantFiled: June 11, 1992Date of Patent: August 2, 1994Assignee: Konica CorporationInventors: Haruhiko Masutomi, Hirofumi Ohtani, Naoko Uchida, Chikao Mamiya
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Patent number: 5200308Abstract: The improved color photographic material has on a support at least one blue-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer and at least one red-sensitive silver halide emulsion layer, each of those emulsion layers having a specified spectral response. This color photographic material has high chroma and insures faithful reproduction of color hues even under illumination with a fluorescent lamp.Type: GrantFiled: December 31, 1990Date of Patent: April 6, 1993Assignee: Konica CorporationInventors: Hirofumi Ohtani, Hiroshi Shimazaki, Yoshitaka Yamada
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Patent number: 5041366Abstract: A silver halide photographic material in which at least one silver halide emulsion layer coated onto a base support has been subjected to supersensitization by the combination of at least one symmetrical carbocyanine dye having two symmetrical heterocyclic structures, at least one other symmetrical carbocyanine dye having two symmetrical heterocyclic structures, and at least one asymmetrical carbocyanine dye having either one of the two heterocyclic structures in the first symmetrical carbocyanine dye and either one of the two heterocyclic structures in the second symmetrical carbocyanine dye. This photographic material has high spectral sensitivity and good storage stability since it is resistant to desensitization due to desorption of spectral sensitizers from silver halides.Type: GrantFiled: October 31, 1989Date of Patent: August 20, 1991Assignee: Konica CorporationInventors: Satomi Asano, Hiroshi Okusa, Nobuaki Kagawa, Hirofumi Ohtani, Syoji Matsuzaka
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Patent number: 5039601Abstract: A silver halide color negative photographic light-sensitive material is disclosed which is improved on stability to fluctuation of processing conditions applied thereon, and has a sufficient wide exposure latitude. The photographic material is also improved on standing stability of silver halide emulsion in the course of manufacturing thereof. The photographic material comprises a support having thereon photographic component layers including at least one silver halide emulsion layer containing at least two groups of silver halide grains each being substantially different in desensitizing agent content from each other.Type: GrantFiled: September 5, 1990Date of Patent: August 13, 1991Assignee: Konica CorporationInventors: Yukio Ohya, Syoji Matsuzaka, Hirofumi Ohtani, Yoshiro Ito, Mineko Ito
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Patent number: 4996140Abstract: A silver halide photographic material having silver halide emulsion layers, at least one of which contains a silver halide emulsion that has been prepared in such a way that a spectral sensitizing dye is added after 85 wt % of the soluble silver salt in solution that is to be added during ripening of silver halide emulsion has been added but before the start of a desalting step, and that a spectral sensitizing dye which may be the same or different from the first added dye is added during the desalting step.Type: GrantFiled: June 6, 1989Date of Patent: February 26, 1991Assignee: Konica CorporationInventors: Tomoyuki Nakayama, Hiroyuki Hoshino, Hirofumi Ohtani, Syoji Matsuzaka
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Patent number: H1196Abstract: A silver halide color photographic light-sensitive material comprising a support having thereon a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a red-sensitive silver halide emulsion layer, whereina maximum sensitivity wavelength .lambda..sub.R of a spectral sensitivity distribution of said red-sensitive silver halide emulsion layer is in a range of 595 nm.ltoreq..lambda..sub.R .ltoreq.625 nm;a maximum sensitivity wavelength .lambda..sub.G of a spectral sensitivity distribution of said green-sensitive silver halide emulsion layer is in a range of 530 nm.ltoreq..lambda..sub.G .ltoreq.560 nm; anda sensitivity of said green-sensitive silver halide emulsion layer at 500 nm is not less than one-fourth of the sensitivity at the maximum sensitivity wavelength .lambda..sub.G.Type: GrantFiled: December 17, 1990Date of Patent: June 1, 1993Assignee: Konica CorporationInventors: Fumie Fukazawa, Katuya Yabuuchi, Hirofumi Ohtani