Patents by Inventor Kenichi Ootsuka
Kenichi Ootsuka 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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Publication number: 20240105646Abstract: According to one embodiment, an isolator includes a first electrode, a second electrode, a conductive body, and a first insulating layer. The second electrode is provided on the first electrode and separated from the first electrode. The conductive body is provided around the first and second electrodes along a first plane perpendicular to a first direction. The first direction is from the first electrode toward the second electrode. The first insulating layer is provided on the second electrode. The first insulating layer includes silicon, carbon, and nitrogen.Type: ApplicationFiled: November 30, 2023Publication date: March 28, 2024Inventors: Kenichi Ootsuka, Mari Ootsuka
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Patent number: 11876058Abstract: According to one embodiment, an isolator includes a first electrode, a second electrode, a conductive body, and a first insulating layer. The second electrode is provided on the first electrode and separated from the first electrode. The conductive body is provided around the first and second electrodes along a first plane perpendicular to a first direction. The first direction is from the first electrode toward the second electrode. The first insulating layer is provided on the second electrode. The first insulating layer includes silicon, carbon, and nitrogen.Type: GrantFiled: September 10, 2020Date of Patent: January 16, 2024Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATIONInventors: Kenichi Ootsuka, Mari Ootsuka
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Publication number: 20230092162Abstract: An insulating device includes: a first inductor including a first coil layer located in a first plane; a second inductor separated from the first inductor, the second inductor including a second coil layer located in the first plane, a central axis of the second coil layer being positioned inside the first coil layer; and an insulating layer located between the first inductor and the second inductor.Type: ApplicationFiled: March 4, 2022Publication date: March 23, 2023Inventors: Tatsuya OHGURO, Kenichi OOTSUKA, Mari OTSUKA, Akira ISHIGURO, Masaki YAMADA
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Patent number: 11405241Abstract: According to one embodiment, a digital isolator includes a first metal portion, a first insulating portion, a second metal portion, a third metal portion, and a first layer. The first insulating portion is provided on the first metal portion. The second metal portion is provided on the first insulating portion. The third metal portion includes first, second, and third portions. The first portion is provided around the first metal portion in a direction perpendicular to a first direction. The second portion is provided on a portion of the first portion with a first conductive layer interposed. The third portion is provided on the second portion and provided around the second metal portion in the perpendicular direction. The first layer contacts the first conductive layer and an other portion of the first portion and is provided around a bottom portion of the second portion.Type: GrantFiled: May 12, 2021Date of Patent: August 2, 2022Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATIONInventors: Tatsuya Ohguro, Tatsuhiro Oda, Kenichi Ootsuka
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Publication number: 20210305179Abstract: According to one embodiment, an isolator includes a first electrode, a second electrode, a conductive body, and a first insulating layer. The second electrode is provided on the first electrode and separated from the first electrode. The conductive body is provided around the first and second electrodes along a first plane perpendicular to a first direction. The first direction is from the first electrode toward the second electrode. The first insulating layer is provided on the second electrode. The first insulating layer includes silicon, carbon, and nitrogen.Type: ApplicationFiled: September 10, 2020Publication date: September 30, 2021Inventors: Kenichi Ootsuka, Mari Ootsuka
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Publication number: 20210266199Abstract: According to one embodiment, a digital isolator includes a first metal portion, a first insulating portion, a second metal portion, a third metal portion, and a first layer. The first insulating portion is provided on the first metal portion. The second metal portion is provided on the first insulating portion. The third metal portion includes first, second, and third portions. The first portion is provided around the first metal portion in a direction perpendicular to a first direction. The second portion is provided on a portion of the first portion with a first conductive layer interposed. The third portion is provided on the second portion and provided around the second metal portion in the perpendicular direction. The first layer contacts the first conductive layer and an other portion of the first portion and is provided around a bottom portion of the second portion.Type: ApplicationFiled: May 12, 2021Publication date: August 26, 2021Inventors: Tatsuya Ohguro, Tatsuhiro Oda, Kenichi Ootsuka
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Patent number: 11038721Abstract: According to one embodiment, a digital isolator includes a first metal portion, a first insulating portion, a second metal portion, a third metal portion, and a first layer. The first insulating portion is provided on the first metal portion. The second metal portion is provided on the first insulating portion. The third metal portion includes first, second, and third portions. The first portion is provided around the first metal portion in a direction perpendicular to a first direction. The second portion is provided on a portion of the first portion with a first conductive layer interposed. The third portion is provided on the second portion and provided around the second metal portion in the perpendicular direction. The first layer contacts the first conductive layer and an other portion of the first portion and is provided around a bottom portion of the second portion.Type: GrantFiled: March 11, 2020Date of Patent: June 15, 2021Assignees: Kabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage CorporationInventors: Tatsuya Ohguro, Tatsuhiro Oda, Kenichi Ootsuka
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Publication number: 20210083908Abstract: According to one embodiment, a digital isolator includes a first metal portion, a first insulating portion, a second metal portion, a third metal portion, and a first layer. The first insulating portion is provided on the first metal portion. The second metal portion is provided on the first insulating portion. The third metal portion includes first, second, and third portions. The first portion is provided around the first metal portion in a direction perpendicular to a first direction. The second portion is provided on a portion of the first portion with a first conductive layer interposed. The third portion is provided on the second portion and provided around the second metal portion in the perpendicular direction. The first layer contacts the first conductive layer and an other portion of the first portion and is provided around a bottom portion of the second portion.Type: ApplicationFiled: March 11, 2020Publication date: March 18, 2021Inventors: Tatsuya Ohguro, Tatsuhiro Oda, Kenichi Ootsuka
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Publication number: 20160348238Abstract: A film forming apparatus according to an embodiment comprises a film forming chamber. A first pipe part is connected to the film forming chamber and leads a discharge gas out of the film forming chamber. The first pipe part has a first opening area in a cross-section perpendicular to a moving direction of the discharge gas. A liquid discharger discharges a part of the discharge gas liquefied in the first pipe part. A second pipe part is provided between the first pipe part and the liquid discharger and has a second opening area smaller than the first opening area in a cross-section perpendicular to a moving direction of the discharge gas.Type: ApplicationFiled: February 1, 2016Publication date: December 1, 2016Inventors: Rempei Nakata, Kenichi Ootsuka, Yuuichi Kuroda, Masaki Hirano, Naoto Miyashita, Tsutomu Miki
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Patent number: 8993440Abstract: A method of manufacturing a semiconductor device according to an embodiment, includes forming a wiring in a surface of a first insulating film on a semiconductor substrate, exposing the first insulating film in whose surface the wiring is formed to a plasma containing a rare gas so as to form a densified layer on the surface of the first insulating film, removing an oxide film formed on the wiring, after the densified layer is formed and forming a second insulating film on the wiring from which the oxide film is removed and on the densified layer, wherein the processes from the removal of the oxide film to the formation of the second insulating film are carried out without being atmospherically-exposed.Type: GrantFiled: July 23, 2013Date of Patent: March 31, 2015Assignee: Kabushiki Kaisha ToshibaInventors: Hideaki Masuda, Kei Watanabe, Kenichi Ootsuka
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Patent number: 8735859Abstract: A nonvolatile semiconductor memory device includes: a first interconnect; a second interconnect at a position opposing the first interconnect; and a variable resistance layer between the first interconnect and the second interconnect, the variable resistance layer being capable of reversibly changing between a first state and a second state by a voltage applied via the first interconnect and the second interconnect or a current supplied via the first interconnect and the second interconnect, the first state having a first resistivity, the second state having a second resistivity higher than the first resistivity. Wherein the variable resistance layer has a compound of carbon and silicon as a main component and including hydrogen.Type: GrantFiled: November 29, 2010Date of Patent: May 27, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Shuichi Kuboi, Masayuki Takata, Tsukasa Nakai, Hiroyuki Fukumizu, Yasuhiro Nojiri, Kenichi Ootsuka
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Publication number: 20130309866Abstract: A method of manufacturing a semiconductor device according to an embodiment, includes forming a wiring in a surface of a first insulating film on a semiconductor substrate, exposing the first insulating film in whose surface the wiring is formed to a plasma containing a rare gas so as to form a densified layer on the surface of the first insulating film, removing an oxide film formed on the wiring, after the densified layer is formed and forming a second insulating film on the wiring from which the oxide film is removed and on the densified layer, wherein the processes from the removal of the oxide film to the formation of the second insulating film are carried out without being atmospherically-exposed.Type: ApplicationFiled: July 23, 2013Publication date: November 21, 2013Inventors: Hideaki Masuda, Kei Watanabe, Kenichi Ootsuka
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Publication number: 20120273743Abstract: A nonvolatile semiconductor memory device includes: a first interconnect; a second interconnect at a position opposing the first interconnect; and a variable resistance layer between the first interconnect and the second interconnect, the variable resistance layer being capable of reversibly changing between a first state and a second state by a voltage applied via the first interconnect and the second interconnect or a current supplied via the first interconnect and the second interconnect, the first state having a first resistivity, the second state having a second resistivity higher than the first resistivity. Wherein the variable resistance layer has a compound of carbon and silicon as a main component and including hydrogen.Type: ApplicationFiled: November 29, 2010Publication date: November 1, 2012Applicant: Kabushiki Kaisha ToshibaInventors: Shuichi Kuboi, Masayuki Takata, Tsukasa Nakai, Hiroyuki Fukumizu, Yasuhiro Nojiri, Kenichi Ootsuka
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Publication number: 20100311240Abstract: A method of manufacturing a semiconductor device according to an embodiment, includes forming a wiring in a surface of a first insulating film on a semiconductor substrate, exposing the first insulating film in whose surface the wiring is formed to a plasma containing a rare gas so as to form a densified layer on the surface of the first insulating film, removing an oxide film formed on the wiring, after the densified layer is formed and forming a second insulating film on the wiring from which the oxide film is removed and on the densified layer, wherein the processes from the removal of the oxide film to the formation of the second insulating film are carried out without being atmospherically-exposed.Type: ApplicationFiled: March 17, 2010Publication date: December 9, 2010Inventors: Hideaki Masuda, Kei Watanabe, Kenichi Ootsuka
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Patent number: 7829898Abstract: In a MOSFET using SiC a p-type channel is formed by epitaxial growth, so that the depletion layer produced in the p-type region right under the channel is reduced, even when the device is formed in a self-aligned manner. Thus, a high breakdown voltage is obtained. Also, since the device is formed in a self-aligned manner, the device size can be reduced so that an increased number of devices can be fabricated in a certain area and the on-state resistance can be reduced.Type: GrantFiled: February 14, 2006Date of Patent: November 9, 2010Assignee: Mitsubishi Electric CorporationInventors: Kenichi Ootsuka, Tetsuya Takami, Tadaharu Minato
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Publication number: 20090020834Abstract: In a MOSFET using SiC a p-type channel is formed by epitaxial growth, so that the depletion layer produced in the p-type region right under the channel is reduced, even when the device is formed in a self-aligned manner. Thus, a high breakdown voltage is obtained. Also, since the device is formed in a self-aligned manner, the device size can be reduced so that an increased number of devices can be fabricated in a certain area and the on-state resistance can be reduced.Type: ApplicationFiled: February 14, 2006Publication date: January 22, 2009Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Kenichi Ootsuka, Tetsuya Takami, Tadaharu Minato
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Patent number: 6530336Abstract: A watercraft has a mid-deck storage compartment. The storage compartment is mounted between a forward portion of the seat and a control mast. The storage compartment inclines rearward and partially overhangs an access opening into an engine compartment that is disposed beneath the seat. A box that is detachably connected to a deck of the watercraft defines the compartment. A cup holder can be disposed within the compartment with storage areas being defined around the cup holder and any cup or can that might be secured by the cup holder. The compartment also expands laterally as it increases in depth.Type: GrantFiled: November 7, 2001Date of Patent: March 11, 2003Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Toshiaki Ibata, Kenichi Ootsuka, Akira Nakatsuji, Toshiyuki Hattori
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Publication number: 20020053308Abstract: A watercraft has a mid-deck storage compartment. The storage compartment is mounted between a forward portion of the seat and a control mast. The storage compartment inclines rearward and partially overhangs an access opening into an engine compartment that is disposed beneath the seat. A box that is detachably connected to a deck of the watercraft defines the compartment. A cup holder can be disposed within the compartment with storage areas being defined around the cup holder and any cup or can that might be secured by the cup holder. The compartment also expands laterally as it increases in depth.Type: ApplicationFiled: November 7, 2001Publication date: May 9, 2002Inventors: Toshiaki Ibata, Kenichi Ootsuka, Akira Nakatsuji, Toshiyuki Hattori
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Publication number: 20020053310Abstract: A watercraft has an improved bow hatch design. The bow hatch is disposed above a bow storage compartment and can be secured in a closed position. A locking mechanism is provided to maintain the bow hatch in a closed position. The locking mechanism comprises a separated actuator and locking member. Thus, the actuator can be disposed in a location convenient to the operator while the locking member can be mounted in an aesthetically acceptable location. The locking member is mounted rearward of the storage bin and the actuator is located to one side of the steering mast. In addition, a cable extends between the actuator and the locking member. Body panels of the watercraft substantially enclose the cable.Type: ApplicationFiled: November 7, 2001Publication date: May 9, 2002Inventors: Toshiaki Ibata, Kenichi Ootsuka, Akira Nakatsuji, Toshiyuki Hattori
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Publication number: 20020055308Abstract: A watercraft has a number of fuel tank-related structures that are designed to either limit the inflow of water into the fuel tank or to enable the removal of water from the fuel tank. A water pool is formed in a portion of the fuel tank with a hose-accepting opening positioned above the water pool such that a siphon can be use to periodically remove water from the fuel supply. An embedded fastener construction also is used to limit the number of openings between the inside and outside of the fuel tank that would need to be sealed to prevent water inflow. A water repellant filter also is used to reduce the likelihood that water can enter the fuel system through a vapor/pressure relief system.Type: ApplicationFiled: November 7, 2001Publication date: May 9, 2002Inventors: Toshiaki Ibata, Kenichi Ootsuka, Akira Nakatsuji, Toshiyuki Hattori