Patents by Inventor Keiichiro KUWATA
Keiichiro KUWATA 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: 11921030Abstract: The gas detection apparatus comprises a figure of all or a part of n ellipsoids. When a region inside the ellipsoid Ei and not including the ellipsoid Esi is defined as a region Ri, the ellipsoid Ei including a light source region of the light emitting part is defined as an ellipsoid Es, the ellipsoid Ei including a light receiving region of the light receiving part is defined as an ellipsoid Ed, the region Ri of the ellipsoid Es is defined as a region Rin, and the region Ri of the ellipsoid Ed is defined as a region Rout, 60% or more of the light source region is present in the region Rin and 60% or more of the light receiving region is present in the region Rout.Type: GrantFiled: October 28, 2021Date of Patent: March 5, 2024Inventors: Takaaki Furuya, Keiichiro Kuwata
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Publication number: 20240035958Abstract: A small-sized gas detection apparatus with high measurement accuracy is provided. The gas detection apparatus includes a light emitting portion (1); a light receiving portion (2); a first mirror (3) that has a quadric reflective surface and reflects light emitted from the light emitting portion; and a second mirror (4) that has a quadric reflective surface and reflects the light reflected by the first mirror to the first mirror. The quadric surfaces of the first mirror and the second mirror have convex portions facing in a same direction. The first mirror reflects the light reflected by the second mirror to the light receiving portion. When one surface of a substrate on which the light emitting portion and the light receiving portion are mounted is used as a reference plane, the first mirror and the second mirror are provided at positions higher than the reference plane and have different heights.Type: ApplicationFiled: July 25, 2023Publication date: February 1, 2024Applicant: Asahi Kasei Microdevices CorporationInventors: Shota ISSHIKI, Keiichiro KUWATA, Yuji IKEDA
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Publication number: 20230308428Abstract: An authentication system includes: a sensor including an instrumentation unit configured to instrument environment information about an environment in a space to be authenticated, a generating unit configured to generate statistical information about the environment of the space based on the environment information, and a communication unit configured to transmit the statistical information to an authentication server configured to authenticate the space based on the statistical information; and the authentication server. The authentication server includes an authentication unit configured to authenticate the space based on the statistical information.Type: ApplicationFiled: March 2, 2023Publication date: September 28, 2023Inventors: Takaaki FURUYA, Keiichiro KUWATA
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Patent number: 11662305Abstract: A gas detection apparatus 1 includes a substrate 2; a light emitting element 3 provided on a main surface of the substrate for emitting light; a light receiving element 4 provided on the main surface of the substrate 2 for receiving the light; a light guide member 5 for guiding the light emitted by the light emitting element 3 to the light receiving element; a first joint member 6; and a second joint member 7. The first joint member joins the substrate and the light guide member, limits a displacement in a direction parallel and/or orthogonal to the main surface of the substrate. The second joint member joins the substrate and the light guide member, limits a displacement of the light guide member in a direction parallel to the main surface of the substrate and/or limits a displacement within a plane orthogonal to the main surface of the substrate.Type: GrantFiled: March 22, 2021Date of Patent: May 30, 2023Assignee: Asahi Kasei Microdevices CorporationInventors: Yuji Ikeda, Keiichiro Kuwata, Takaaki Furuya
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Patent number: 11644417Abstract: Provided is a gas detection apparatus which suppresses occurrences of distortions of the optical path to reduce fluctuations of the gas detection sensitivity. A gas detection apparatus 1 includes a substrate 2; a light emitting element 3 disposed in a first region 21 in a main surface 20 of the substrate 2 for emitting light; a light receiving element 4 disposed in a second region 22 in the main surface 20 of the substrate 2 for receiving the light; a light guide member 5 for guiding the light emitted by the light emitting element 3 to the light receiving element 4; and a joint member 6 joining the substrate 2 and the light guide member 5. The joint member 6 serves as a rotation axis when the light guide member 5 is displaced relative to the substrate 2.Type: GrantFiled: March 4, 2021Date of Patent: May 9, 2023Assignee: Asahi Kasei Microdevices CorporationInventors: Yuji Ikeda, Keiichiro Kuwata, Takaaki Furuya
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Patent number: 11474031Abstract: A stable and highly accurate gas detections apparatus is provided. A gas detection apparatus 1 includes a light emitting element 3 provided on a main surface 20 of the substrate 2 for emitting light from a light emitting surface 31; a light receiving element 4 provided on the main surface 20 of the substrate 2 for receiving the light on a light receiving surface 41; and a light guide member 5 for guiding the light emitted by the light emitting element 3 to the light receiving element 4. In plan view of the main surface of the substrate, the light emitting surface 31 and the light receiving surface 41 are shaped to have corners, and side of the light emitting surface 31 after being subjected to a magnification or reduction and a translation do not overlap sides of the light receiving surface 41.Type: GrantFiled: March 5, 2021Date of Patent: October 18, 2022Assignee: Asahi Kasei Microdevices CorporationInventors: Keiichiro Kuwata, Shota Isshiki, Yuji Ikeda
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Publication number: 20220308028Abstract: Provided is a determination apparatus including: a determination unit configured to determine, based on a carbon dioxide concentration in a determination target, a situation of the carbon dioxide concentration in the determination target and a measurement situation of the carbon dioxide concentration in the determination target; a notification unit configured to notify a determination result by the determination unit; an information acquisition unit configured to acquire improvement information according to at least one of a situation of the carbon dioxide concentration and a measurement situation of the carbon dioxide concentration; and a control unit configured to control the notification unit to have the notification unit notify the determination result and the improvement information.Type: ApplicationFiled: March 23, 2022Publication date: September 29, 2022Inventors: Takaaki FURUYA, Keiichiro KUWATA
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Publication number: 20220307709Abstract: A risk information provision device is provided, comprising: an information acquisition unit for acquiring risk information related to a risk depending on a status of a carbon dioxide concentration in a determination target and risk handling information for handling the risk, wherein the status of the carbon dioxide concentration is determined based on a temporal change in the carbon dioxide concentration in the determination target; and a provision unit for providing at least one of the risk information or the risk handling information, wherein the risk handling information includes recipient information related to a recipient to which the risk information is provided, and the provision unit is configured to provide the risk information to the recipient.Type: ApplicationFiled: March 13, 2022Publication date: September 29, 2022Inventors: Takaaki FURUYA, Keiichiro KUWATA
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Publication number: 20220128449Abstract: The gas detection apparatus comprises a figure of all or a part of n ellipsoids. When a region inside the ellipsoid Ei and not including the ellipsoid Esi is defined as a region Ri, the ellipsoid Ei including a light source region of the light emitting part is defined as an ellipsoid Es, the ellipsoid Ei including a light receiving region of the light receiving part is defined as an ellipsoid Ed, the region Ri of the ellipsoid Es is defined as a region Rin, and the region Ri of the ellipsoid Ed is defined as a region Rout, 60% or more of the light source region is present in the region Rin and 60% or more of the light receiving region is present in the region Rout.Type: ApplicationFiled: October 28, 2021Publication date: April 28, 2022Applicant: Asahi Kasei Microdevices CorporationInventors: Takaaki FURUYA, Keiichiro KUWATA
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Publication number: 20210302309Abstract: A gas detection apparatus 1 includes a substrate 2; a light emitting element 3 provided on a main surface of the substrate for emitting light; a light receiving element 4 provided on the main surface of the substrate 2 for receiving the light; a light guide member 5 for guiding the light emitted by the light emitting element 3 to the light receiving element; a first joint member 6; and a second joint member 7. The first joint member joins the substrate and the light guide member, limits a displacement in a direction parallel and/or orthogonal to the main surface of the substrate. The second joint member joins the substrate and the light guide member, limits a displacement of the light guide member in a direction parallel to the main surface of the substrate and/or limits a displacement within a plane orthogonal to the main surface of the substrate.Type: ApplicationFiled: March 22, 2021Publication date: September 30, 2021Applicant: Asahi Kasei Microdevices CorporationInventors: Yuji IKEDA, Keiichiro KUWATA, Takaaki FURUYA
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Publication number: 20210285870Abstract: Provided is a gas detection apparatus which suppresses occurrences of distortions of the optical path to reduce fluctuations of the gas detection sensitivity. A gas detection apparatus 1 includes a substrate 2; a light emitting element 3 disposed in a first region 21 in a main surface 20 of the substrate 2 for emitting light; a light receiving element 4 disposed in a second region 22 in the main surface 20 of the substrate 2 for receiving the light; a light guide member 5 for guiding the light emitted by the light emitting element 3 to the light receiving element 4; and a joint member 6 joining the substrate 2 and the light guide member 5. The joint member 6 serves as a rotation axis when the light guide member 5 is displaced relative to the substrate 2.Type: ApplicationFiled: March 4, 2021Publication date: September 16, 2021Applicant: Asahi Kasei Microdevices CorporationInventors: Yuji IKEDA, Keiichiro KUWATA, Takaaki FURUYA
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Publication number: 20210285871Abstract: A stable and highly accurate gas detections apparatus is provided. A gas detection apparatus 1 includes a light emitting element 3 provided on a main surface 20 of the substrate 2 for emitting light from a light emitting surface 31; a light receiving element 4 provided on the main surface 20 of the substrate 2 for receiving the light on a light receiving surface 41; and a light guide member 5 for guiding the light emitted by the light emitting element 3 to the light receiving element 4. In plan view of the main surface of the substrate, the light emitting surface 31 and the light receiving surface 41 are shaped to have corners, and side of the light emitting surface 31 after being subjected to a magnification or reduction and a translation do not overlap sides of the light receiving surface 41.Type: ApplicationFiled: March 5, 2021Publication date: September 16, 2021Applicant: Asahi Kasei Microdevices CorporationInventors: Keiichiro KUWATA, Shota ISSHIKI, Yuji IKEDA