Patents by Inventor Keitaro Yamada
Keitaro Yamada 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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ORGANIC ELECTROLUMINESCENT ELEMENT, ORGANIC ELECTROLUMINESCENT DISPLAY APPARATUS, AND DIGITAL DEVICE
Publication number: 20240147843Abstract: An organic EL device includes an emitting region provided between a cathode and an anode, a first anode-side-organic layer, a second anode-side-organic layer, and a third anode-side-organic layer, in which the emitting region includes at least a first emitting layer, the first anode-side-organic layer is in direct contact with the second anode-side-organic layer, the second anode-side-organic layer is in direct contact with the third anode-side-organic layer, the third anode-side-organic layer has a film thickness of 20 nm or more, the second anode-side-organic layer contains at least one compound different from a compound contained in the third anode-side-organic layer, the first emitting layer is a fluorescent emitting layer, and a refractive index NM2 of a constituent material contained in the second anode-side-organic layer and a refractive index NM3 of a constituent material contained in the third anode-side-organic layer satisfy a relationship of Numerical Formula NM, NM2>NM3??(Numerical Formula NMType: ApplicationFiled: January 13, 2022Publication date: May 2, 2024Inventors: Satomi TASAKI, Kazuki NISHIMURA, Tetsuya MASUDA, Hiroaki TOYOSHIMA, Masato NAKAMURA, Hiroaki ITOI, Emiko KAMBE, Tasuku HAKETA, Yusuke TAKAHASHI, Keitaro YAMADA, Takeshi IKEDA -
Publication number: 20240136466Abstract: The present invention is a method for manufacturing an epitaxial wafer for an ultraviolet ray emission device, the method including steps of: preparing a supporting substrate having at least one surface composed of gallium nitride; forming a bonding layer on the surface composed of the gallium nitride of the supporting substrate; forming a laminated substrate having a seed crystal layer by laminating a seed crystal composed of an AlxGa1-xN (0.5<x?1.0) single crystal to the bonding layer; and epitaxially growing an ultraviolet emission device layer on the seed crystal layer of the laminated substrate, the ultraviolet emission device layer having at least: a first conductive clad layer composed of AlyGa1-yN (0.5<y?1.0); an AlGaN-based active layer; and a second conductive clad layer composed of AlzGa1-zN (0.5<z?1.0). This provides a method for manufacturing an inexpensive, high-quality epitaxial wafer for an ultraviolet ray emission device.Type: ApplicationFiled: February 16, 2022Publication date: April 25, 2024Applicants: SHIN-ETSU HANDOTAI CO., LTD., SHIN-ETSU HANDOTAI CO., LTD.Inventors: Keitaro TSUCHIYA, Masato YAMADA
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Publication number: 20240130224Abstract: An organic electroluminescence device includes an emitting region between a cathode and an anode, a first anode side organic layer, and a second anode side organic layer. The emitting region includes at least a first emitting layer, the first anode side organic layer is in direct contact with the second anode side organic layer, the first anode side organic layer contains first and second organic materials, a content of the first organic material in the first anode side organic layer is less than 50 mass %, the second anode side organic layer contains a second hole transporting zone material, the first emitting layer is an emitting layer that emits fluorescence, and a refractive index NM1 of the constituent materials contained in the first anode side organic layer and a refractive index NM2 of the constituent material contained in the second anode side organic layer satisfy a relationship of NM1>NM2.Type: ApplicationFiled: December 24, 2021Publication date: April 18, 2024Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Hiroaki TOYOSHIMA, Kazuki NISHIMURA, Tetsuya MASUDA, Satomi TASAKI, Masato NAKAMURA, Hiroaki ITOI, Emiko KAMBE, Yusuke TAKAHASHI, Keitaro YAMADA, Takeshi IKEDA, Tasuku HAKETA
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Publication number: 20230210002Abstract: A composition including a compound represented by the following formula (12) and a compound represented by the following formula (21) (provided that the compound represented by the formula (12) is different from the compound represented by the formula (21)).Type: ApplicationFiled: December 6, 2022Publication date: June 29, 2023Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Shota TANAKA, Keitaro YAMADA, Yusuke TAKAHASHI, Hiroaki TOYOSHIMA
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Patent number: 11649984Abstract: An air conditioner includes: an air blower configured to take air from an inlet, and to blow the air from an outlet; a filter configured to purify the air; a first chamber and a second chamber taking the air purified by the filter; a humidification filter provided in the second chamber, and humidifying the air taken into the second chamber; and a divider opening and closing an opening that provides communication between the first chamber and the second chamber, and adjusting a volume of the air taken from the first chamber into the second chamber. The air taken from the first chamber into the second chamber and/or the air taken into the second chamber is blown from the outlet.Type: GrantFiled: September 3, 2020Date of Patent: May 16, 2023Assignee: SHARP KABUSHIKI KAISHAInventors: Takashi Kohama, Yuusuke Ozaki, Yoshinori Nakamura, Keitaro Yamada
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Publication number: 20220238814Abstract: An organic electroluminescence device, comprising: a cathode, an anode, an emitting layer disposed between the cathode and the anode, and a hole-transporting zone disposed between the anode and the emitting layer, wherein the hole-transporting zone contains a first layer and a second layer in this order from the anode side, the first layer contains a compound represented by the following formula (1), and the first layer has a thickness of 0.10 to 3.00 nm.Type: ApplicationFiled: January 20, 2022Publication date: July 28, 2022Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Keitaro YAMADA, Masato NAKAMURA
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ORGANIC ELECTROLUMINESCENT ELEMENT, ORGANIC ELECTROLUMINESCENT DISPLAY DEVICE, AND ELECTRONIC DEVICE
Publication number: 20220231231Abstract: An organic electroluminescence device includes an emitting region provided between a cathode and an anode, a first anode side organic layer, a second anode side organic layer, and a third anode side organic layer, in which the emitting region includes at least one emitting layer, the second anode side organic layer contains at least one compound different from the compound contained in the third anode side organic layer, the third anode side organic layer has a film thickness of 20 nm or more, and a difference NM2?NM3 between a refractive index NM2 of a constituent material contained in the second anode side organic layer and a refractive index NM3 of a constituent material contained in the third anode side organic layer satisfies a relationship of a numerical formula (Numerical Formula N1) below, NM2?NM3?0.05??(Numerical Formula N1).Type: ApplicationFiled: October 26, 2021Publication date: July 21, 2022Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Masato NAKAMURA, Yusuke TAKAHASHI, Keitaro YAMADA, Tasuku HAKETA, Emiko KAMBE, Kazuki NISHIMURA -
Publication number: 20210080147Abstract: An air conditioner includes: an air blower configured to take air from an inlet, and to blow the air from an outlet; a filter configured to purify the air; a first chamber and a second chamber taking the air purified by the filter; a humidification filter provided in the second chamber, and humidifying the air taken into the second chamber; and a divider opening and closing an opening that provides communication between the first chamber and the second chamber, and adjusting a volume of the air taken from the first chamber into the second chamber. The air taken from the first chamber into the second chamber and/or the air taken into the second chamber is blown from the outlet.Type: ApplicationFiled: September 3, 2020Publication date: March 18, 2021Inventors: TAKASHI KOHAMA, YUUSUKE OZAKI, YOSHINORI NAKAMURA, KEITARO YAMADA
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Publication number: 20200330640Abstract: Provided is a favorable effect on the mental state of a user who are in a target space that is to undergo climate-control, through ion release. An ion generator (100) causes the target space to have an ion density of 50.000 or more ions/cm3.Type: ApplicationFiled: February 15, 2018Publication date: October 22, 2020Inventors: HIROKAZU FUNAMORI, SATOHIKO YAMAMOTO, KEITARO YAMADA, YUKO MATSUDA, HIROKI NANJO
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Patent number: 10109449Abstract: Each of first to fourth needle-like electrodes is arranged such that a direction of extension thereof is parallel, and generates ions by discharge. Through a space, a gas for conveying the ions generated by the first to fourth needle-like electrodes flows. Needle tips of the first needle-like electrode and the second needle-like electrode protrude from a first wall surface that forms the space, are spaced apart from each other, and are arranged in line in the space. Needle tips of the third needle-like electrode and the fourth needle-like electrode protrude from a second wall surface that forms the space and faces the first wall surface, are spaced apart from each other, and are arranged in line in the space. The first needle-like electrode and the fourth needle-like electrode generate positive ions, and the second needle-like electrode and the third needle-like electrode generate negative ions.Type: GrantFiled: April 20, 2017Date of Patent: October 23, 2018Assignee: Sharp Kabushiki KaishaInventors: Tetsuya Ezaki, Yoshinori Sekoguchi, Satohiko Yamamoto, Tomoaki Takado, Keitaro Yamada, Satoshi Okano
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Patent number: 9985420Abstract: A discharge device capable of maintaining a stable discharge performance even in a highly humid environment or an atmospheric environment containing salt includes a discharge electrode discharging when a voltage is applied thereto, a substrate supporting the discharge electrode, an induction electrode arranged apart from the discharge electrode, and an insulator enclosing all of the substrate and the induction electrode. The discharge electrode has a root portion supported by the substrate, a pointed end protruding from a surface of the insulator, and a taper portion tapering from the root portion toward the pointed end. An outer peripheral surface of the root portion is made of a material having an ionization tendency lower than that of hydrogen.Type: GrantFiled: September 17, 2014Date of Patent: May 29, 2018Assignee: SHARP KABUSHIKI KAISHAInventors: Yoshinori Sekoguchi, Nobuyuki Ohe, Hiromu Nishida, Koichi Izu, Minako Taniguchi, Keitaro Yamada
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Publication number: 20170221668Abstract: Each of first to fourth needle-like electrodes is arranged such that a direction of extension thereof is parallel, and generates ions by discharge. Through a space, a gas for conveying the ions generated by the first to fourth needle-like electrodes flows. Needle tips of the first needle-like electrode and the second needle-like electrode protrude from a first wall surface that forms the space, are spaced apart from each other, and are arranged in line in the space. Needle tips of the third needle-like electrode and the fourth needle-like electrode protrude from a second wall surface that forms the space and faces the first wall surface, are spaced apart from each other, and are arranged in line in the space. The first needle-like electrode and the fourth needle-like electrode generate positive ions, and the second needle-like electrode and the third needle-like electrode generate negative ions.Type: ApplicationFiled: April 20, 2017Publication date: August 3, 2017Inventors: Tetsuya EZAKI, Yoshinori SEKOGUCHI, Satohiko YAMAMOTO, Tomoaki TAKADO, Keitaro YAMADA, Satoshi OKANO
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Patent number: 9666402Abstract: Each of first to fourth needle-like electrodes is arranged such that a direction of extension thereof is parallel, and generates ions by discharge. Through a space, a gas for conveying the ions generated by the first to fourth needle-like electrodes flows. Needle tips of the first needle-like electrode and the second needle-like electrode protrude from a first wall surface that forms the space, are spaced apart from each other, and are arranged in line in the space. Needle tips of the third needle-like electrode and the fourth needle-like electrode protrude from a second wall surface that forms the space and faces the first wall surface, are spaced apart from each other, and are arranged in line in the space. The first needle-like electrode and the fourth needle-like electrode generate positive ions, and the second needle-like electrode and the third needle-like electrode generate negative ions.Type: GrantFiled: February 27, 2014Date of Patent: May 30, 2017Assignee: Sharp Kabushiki KaishaInventors: Tetsuya Ezaki, Yoshinori Sekoguchi, Satohiko Yamamoto, Tomoaki Takado, Keitaro Yamada, Satoshi Okano
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Publication number: 20160211654Abstract: A discharge device capable of maintaining a stable discharge performance even in a highly humid environment or an atmospheric environment containing salt includes a discharge electrode discharging when a voltage is applied thereto, a substrate supporting the discharge electrode, an induction electrode arranged apart from the discharge electrode, and an insulator enclosing all of the substrate and the induction electrode. The discharge electrode has a root portion supported by the substrate, a pointed end protruding from a surface of the insulator, and a taper portion tapering from the root portion toward the pointed end. An outer peripheral surface of the root portion is made of a material having an ionization tendency lower than that of hydrogen.Type: ApplicationFiled: September 17, 2014Publication date: July 21, 2016Inventors: Yoshinori SEKOGUCHI, Nobuyuki OHE, Hiromu NISHIDA, Koichi IZU, Minako TANIGUCHI, Keitaro YAMADA
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Publication number: 20150248989Abstract: Each of first to fourth needle-like electrodes is arranged such that a direction of extension thereof is parallel, and generates ions by discharge. Through a space, a gas for conveying the ions generated by the first to fourth needle-like electrodes flows. Needle tips of the first needle-like electrode and the second needle-like electrode protrude from a first wall surface that forms the space, are spaced apart from each other, and are arranged in line in the space. Needle tips of the third needle-like electrode and the fourth needle-like electrode protrude from a second wall surface that forms the space and faces the first wall surface, are spaced apart from each other, and are arranged in line in the space. The first needle-like electrode and the fourth needle-like electrode generate positive ions, and the second needle-like electrode and the third needle-like electrode generate negative ions.Type: ApplicationFiled: February 27, 2014Publication date: September 3, 2015Inventors: Tetsuya Ezaki, Yoshinori Sekoguchi, Satohiko Yamamoto, Tomoaki Takado, Keitaro Yamada, Satoshi Okano