Patents by Inventor Junji Fukui
Junji Fukui 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: 12111508Abstract: A package for an optical fiber includes: a base portion; a plurality of protruding portions that protrude from a flat surface of the base portion, are arranged along an outer periphery of the base portion, and are configured so that an optical fiber including a connector mounted to at least one end thereof is wound along a part of an outer periphery of each of the protruding portions; a mounting portion to which the connector of the optical fiber is to be mounted; and a plurality of fall-off preventing portions that are formed integrally with the base portion and capable of restricting a position of the optical fiber to be wound over the plurality of protruding portions.Type: GrantFiled: April 16, 2021Date of Patent: October 8, 2024Assignee: SUMITOMO ELECTRIC OPTIFRONTIER CO., LTD.Inventors: Junji Fukui, Yoshikyo Tamekuni, Takahiro Inaba, Yoshihiro Takeyama, Daizo Nishioka, Hisahiko Narukawa, Yuji Matsumoto, Shinsuke Sato, Tuan Nghia Duong
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Patent number: 12105339Abstract: A wiring module includes: a bottom plate; a module having two surfaces facing each other; a plurality of optical fibers, each of which is connected to the module via at least one of the surfaces of the module; and a plurality of reels which are sequentially stacked on an upper surface of the bottom plate, each of the plurality of reels accommodating a bundle of one corresponding optical fiber among the plurality of optical fibers. The module is disposed in a space formed inside the plurality of reels which are stacked.Type: GrantFiled: June 4, 2021Date of Patent: October 1, 2024Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO ELECTRIC OPTIFRONTIER CO., LTD.Inventors: Takayuki Yokochi, Kenichiro Otsuka, Takayuki Shimazu, Junji Fukui
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Publication number: 20240027696Abstract: An optical connection structure including first optical fibers, second optical fibers, a first optical connector, and a second optical connector is disclosed. The first optical connector is configured such that each of first distal end portions of the first optical fibers protrudes from a first front end surface to the outside when the first optical connector and the second optical connector are connected to each other. Each of the first distal end portions is inserted into a corresponding second fiber hole of the second optical connector. The second optical connector is configured such that each of second distal end portions of the second optical fibers is moved rearward inside second fiber holes due to each of the first distal end portions respectively inserted into the second fiber holes. The first optical fibers and the second optical fibers are optically coupled to each other inside the second fiber holes.Type: ApplicationFiled: October 3, 2023Publication date: January 25, 2024Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO ELECTRIC OPTIFRONTIER CO., LTD., JAPAN COMMUNICATION ACCESSORIES MANUFACTURING CO., LTD., SUMITOMO ELECTRIC LIGHTWAVE CORP.Inventors: Masaki OMURA, Motoyoshi KIMURA, Takayuki YOKOCHI, Shunichi WATANABE, Junji FUKUI, Yasuyuki MAEKAWA, Takayuki SHIMAZU, Takashi KONDO, Kenichiro OTSUKA
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Patent number: 11815723Abstract: An optical connection structure including first optical fibers, second optical fibers, a first optical connector, and a second optical connector is disclosed. The first optical connector is configured such that each of first distal end portions of the first optical fibers protrudes from a first front end surface to the outside when the first optical connector and the second optical connector are connected to each other. Each of the first distal end portions is inserted into a corresponding second fiber hole of the second optical connector. The second optical connector is configured such that each of second distal end portions of the second optical fibers is moved rearward inside second fiber holes due to each of the first distal end portions respectively inserted into the second fiber holes. The first optical fibers and the second optical fibers are optically coupled to each other inside the second fiber holes.Type: GrantFiled: October 26, 2021Date of Patent: November 14, 2023Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO ELECTRIC OPTIFRONTIER CO., LTD., JAPAN COMMUNICATION ACCESSORIES MANUFACTURING CO., LTD., SUMITOMO ELECTRIC LIGHTWAVE CORP.Inventors: Masaki Omura, Motoyoshi Kimura, Takayuki Yokochi, Shunichi Watanabe, Junji Fukui, Yasuyuki Maekawa, Takayuki Shimazu, Takashi Kondo, Kenichiro Otsuka
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Publication number: 20230358986Abstract: A wiring module includes: a bottom plate; a module having two surfaces facing each other; a plurality of optical fibers, each of which is connected to the module via at least one of the surfaces of the module; and a plurality of reels which are sequentially stacked on an upper surface of the bottom plate, each of the plurality of reels accommodating a bundle of one corresponding optical fiber among the plurality of optical fibers. The module is disposed in a space formed inside the plurality of reels which are stacked.Type: ApplicationFiled: June 4, 2021Publication date: November 9, 2023Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO ELECTRIC OPTIFRONTIER CO., LTD.Inventors: Takayuki YOKOCHI, Kenichiro OTSUKA, Takayuki SHIMAZU, Junji FUKUI
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Publication number: 20230125413Abstract: An optical connection structure including first optical fibers, second optical fibers, a first optical connector, and a second optical connector is disclosed. The first optical connector is configured such that each of first distal end portions of the first optical fibers protrudes from a first front end surface to the outside when the first optical connector and the second optical connector are connected to each other. Each of the first distal end portions is inserted into a corresponding second fiber hole of the second optical connector. The second optical connector is configured such that each of second distal end portions of the second optical fibers is moved rearward inside second fiber holes due to each of the first distal end portions respectively inserted into the second fiber holes. The first optical fibers and the second optical fibers are optically coupled to each other inside the second fiber holes.Type: ApplicationFiled: October 26, 2021Publication date: April 27, 2023Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO ELECTRIC OPTIFRONTIER CO., LTD., JAPAN COMMUNICATION ACCESSORIES MANUFACTURING CO., LTD., SUMITOMO ELECTRIC LIGHTWAVE CORP.Inventors: Masaki OMURA, Motoyoshi KIMURA, Takayuki YOKOCHI, Shunichi WATANABE, Junji FUKUI, Yasuyuki MAEKAWA, Takayuki SHIMAZU, Takashi KONDO, Kenichiro OTSUKA
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Publication number: 20220350103Abstract: A package for an optical fiber includes: a base portion; a plurality of protruding portions that protrude from a flat surface of the base portion, are arranged along an outer periphery of the base portion, and are configured so that an optical fiber including a connector mounted to at least one end thereof is wound along a part of an outer periphery of each of the protruding portions; a mounting portion to which the connector of the optical fiber is to be mounted; and a plurality of fall-off preventing portions that are formed integrally with the base portion and capable of restricting a position of the optical fiber to be wound over the plurality of protruding portions.Type: ApplicationFiled: April 16, 2021Publication date: November 3, 2022Applicant: SUMITOMO ELECTRIC OPTIFRONTIER CO., LTD.Inventors: Junji FUKUI, Yoshikyo TAMEKUNI, Takahiro INABA, Yoshihiro TAKEYAMA, Daizo NISHIOKA, Hisahiko NARUKAWA, Yuji MATSUMOTO, Shinsuke SATO, Tuan Nghia DUONG
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Patent number: 11073671Abstract: A termination unit includes: a plurality of first optical fibers fusion-connected to a multicore cable; a tray slidable in a first direction, the tray being provided on one end side of the termination unit in the first direction; and a plurality of adapters which are provided in a line on the tray, to which a plurality of second optical fibers are connected from each of one end sides of the adapters, and to which the plurality of first optical fibers are connected from each of the other end sides of the adapters, in which the tray has a cover part for protecting the plurality of adapters, and in which the cover part is rotatable with a shaft that extends along a second direction, and the cover part rotates downward when the tray has slid in a direction toward the one end side from the other end side.Type: GrantFiled: November 27, 2017Date of Patent: July 27, 2021Assignees: SEI OPTIFRONTIER CO., LTD., JAPAN COMMUNICATION ACCESSORIES MANUFACTURING CO., LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Kazuya Masuda, Junji Fukui, Tomoyuki Yokokawa, Tetsuya Oosugi, Takayuki Yokochi, Masanori Yamanaka, Tsuneari Ito
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Publication number: 20210055497Abstract: A termination unit includes: a plurality of first optical fibers fusion-connected to a multicore cable; a tray slidable in a first direction, the tray being provided on one end side of the termination unit in the first direction; and a plurality of adapters which are provided in a line on the tray, to which a plurality of second optical fibers are connected from each of one end sides of the adapters, and to which the plurality of first optical fibers are connected from each of the other end sides of the adapters, in which the tray has a cover part for protecting the plurality of adapters, and in which the cover part is rotatable with a shaft that extends along a second direction, and the cover part rotates downward when the tray has slid in a direction toward the one end side from the other end side.Type: ApplicationFiled: November 27, 2017Publication date: February 25, 2021Applicants: SEI Optifrontier Co., Ltd., Japan Communication Accessories Manufacturing Co., Ltd., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Kazuya MASUDA, Junji FUKUI, Tomoyuki YOKOKAWA, Tetsuya OOSUGI, Takayuki YOKOCHI, Masanori YAMANAKA, Tsuneari ITO
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Patent number: 10591693Abstract: A termination unit located on a rack part of an optical fiber rack includes a housing a plurality of first optical fibers located in the housing, the plurality of first optical fibers being fusion spliced to a multi fiber cable introduced from an outside of the optical fiber rack, an adapter group including a plurality of adapters in a line in the housing, the plurality of adapters being respectively connected to the plurality of first optical fibers on an inside of the housing and being respectively connected to a plurality of second optical fibers on an outside of the housing, and an optical fiber passing part through which at least one optical fiber is configured to pass, the optical fiber passing part being located in at least one of: the adapter group, and between the housing and the adapter group in an arrangement direction.Type: GrantFiled: August 22, 2018Date of Patent: March 17, 2020Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., SEI Optifrontier Co., Ltd.Inventors: Takayasu Yamauchi, Tomohiko Ueda, Junji Fukui, Yukihiro Yokomachi, Tomoyuki Yokokawa, Takayuki Yokochi, Masanori Yamanaka
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Publication number: 20190293889Abstract: An optical fiber rack includes a rack part on which a termination unit is located, and an optical fiber housing part for housing an extra length wiring part in an optical fiber bundle, the optical fiber housing part being positioned in a first direction. The termination unit includes a plurality of first optical fibers, a ay provided on one end side of the termination unit in a second direction, the tray being slidable in the second direction, and a plurality of adapters which are arranged in a line on the tray. The tray has a first support part for supporting the optical fiber bundle, the optical fiber rack further includes a second support part arranged in the second direction with respect to the first support part, and the second support part stretchably supports the optical fiber bundle extending from the first support part to the optical fiber housing part.Type: ApplicationFiled: November 27, 2017Publication date: September 26, 2019Applicants: SEI Optifrontier Co., Ltd., Japan Communication Accessories Manufacturing Co., Ltd., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Kazuya MASUDA, Tomoyuki YOKOKAWA, Junji FUKUI, Tetsuya OOSUGI, Takayuki YOKOCHI, Masanori YAMANAKA, Eisuke OKI, Tsuneari ITO
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Publication number: 20190064468Abstract: A termination unit located on a rack part of an optical fiber rack includes a housing a plurality of first optical fibers located in the housing, the plurality of first optical fibers being fusion spliced to a multi fiber cable introduced from an outside of the optical fiber rack, an adapter group including a plurality of adapters in a line in the housing, the plurality of adapters being respectively connected to the plurality of first optical fibers on an inside of the housing and being respectively connected to a plurality of second optical fibers on an outside of the housing, and an optical fiber passing part through which at least one optical fiber is configured to pass, the optical fiber passing part being located in at least one of: the adapter group, and between the housing and the adapter group in an arrangement direction.Type: ApplicationFiled: August 22, 2018Publication date: February 28, 2019Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., SEI Optifrontier Co., Ltd.Inventors: Takayasu YAMAUCHI, Tomohiko UEDA, Junji FUKUI, Yukihiro YOKOMACHI, Tomoyuki YOKOKAWA, Takayuki YOKOCHI, Masanori YAMANAKA
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Patent number: 10101551Abstract: A multi-core/single-core conversion module is disclosed. The multi-core/single-core conversion module includes a housing including a first end, a second end and a lateral wall defining an inner space between the first end and the second end, a first adapter attached to the first end of the housing, two or more second adapters attached to the second end of the housing, a multi-core optical connector inserted into the first adapter from the inner space of the housing, a plurality of single-core optical connectors respectively inserted into the second adapters from the inner space of the housing, and a plurality of optical fibers connecting the multi-core optical connector to the plurality of single-core optical connectors with each other. The second adapters are arranged on the second end across a plurality of tiers. An opening can be formed by a part of the lateral wall being detached.Type: GrantFiled: June 5, 2017Date of Patent: October 16, 2018Assignees: SEI OPTIFRONTIER CO., LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Junji Fukui, Kenichiro Ohtsuka, Yuji Suzuki, Hiroyasu Toyooka, Takayuki Suzuki
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Patent number: 9958620Abstract: An optical fiber with a connector includes a first connector and a plurality of optical fibers attached to the first connector. The first connector includes: at least one fiber-shaped member; and a ferrule including a first end surface and a second end surface arranged in a first direction, and a holding portion holding the optical fibers and the fiber-shaped member. In the holding portion, a plurality of fiber insertion holes extending from the first end surface in the first direction is formed such that the optical fibers and the fiber-shaped member are insertable thereinto. One end of the optical fiber and one end of the fiber-shaped member are held by the holding portion in a state of being inserted into the fiber insertion hole. The optical fiber extends to the outside of the ferrule. The other end of the fiber-shaped member is located inside the ferrule.Type: GrantFiled: December 3, 2015Date of Patent: May 1, 2018Assignee: SEI Optifrontier Co., Ltd.Inventors: Kenichiro Ohtsuka, Kotaro Ueda, Tsutomu Kamada, Junji Fukui, Masashi Oka
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Patent number: 9921376Abstract: An optical fiber with a connector includes a first connector and a plurality of optical fibers attached to the first connector. The first connector includes: at least one fiber-shaped member; and a ferrule including a first end surface and a second end surface arranged in a first direction, and a holding portion holding the optical fibers and the fiber-shaped member. In the holding portion, a plurality of fiber insertion holes extending from the first end surface in the first direction is formed such that the optical fibers and the fiber-shaped member are insertable thereinto. One end of the optical fiber and one end of the fiber-shaped member are held by the holding portion in a state of being inserted into the fiber insertion hole. The optical fiber extends to the outside of the ferrule. The other end of the fiber-shaped member is located inside the ferrule.Type: GrantFiled: December 3, 2015Date of Patent: March 20, 2018Assignee: SEI Optifrontier Co., Ltd.Inventors: Kenichiro Ohtsuka, Kotaro Ueda, Tsutomu Kamada, Junji Fukui, Masashi Oka
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Publication number: 20170359091Abstract: A multi-core/single-core conversion module is disclosed. The multi-core/single-core conversion module includes a housing including a first end, a second end and a lateral wall defining an inner space between the first end and the second end, a first adapter attached to the first end of the housing, two or more second adapters attached to the second end of the housing, a multi-core optical connector inserted into the first adapter from the inner space of the housing, a plurality of single-core optical connectors respectively inserted into the second adapters from the inner space of the housing, and a plurality of optical fibers connecting the multi-core optical connector to the plurality of single-core optical connectors with each other. The second adapters are arranged on the second end across a plurality of tiers. An opening can be formed by a part of the lateral wall being detached.Type: ApplicationFiled: June 5, 2017Publication date: December 14, 2017Applicants: SEI Optifrontier Co., Ltd., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Junji FUKUI, Kenichiro OHTSUKA, Yuji SUZUKI, Hiroyasu TOYOOKA, Takayuki SUZUKI
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Patent number: 9804344Abstract: An optical fiber with a connector includes a first connector and a plurality of optical fibers attached to the first connector. The first connector includes: at least one fiber-shaped member; and a ferrule including a first end surface and a second end surface arranged in a first direction, and a holding portion holding the optical fibers and the fiber-shaped member. In the holding portion, a plurality of fiber insertion holes extending from the first end surface in the first direction is formed such that the optical fibers and the fiber-shaped member are insertable thereinto. One end of the optical fiber and one end of the fiber-shaped member are held by the holding portion in a state of being inserted into the fiber insertion hole. The optical fiber extends to the outside of the ferrule. The other end of the fiber-shaped member is located inside the ferrule.Type: GrantFiled: December 3, 2015Date of Patent: October 31, 2017Assignee: SEI Optifrontier Co., Ltd.Inventors: Kenichiro Ohtsuka, Kotaro Ueda, Tsutomu Kamada, Junji Fukui, Masashi Oka
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Publication number: 20170160495Abstract: An optical fiber with a connector includes a first connector and a plurality of optical fibers attached to the first connector. The first connector includes: at least one fiber-shaped member; and a ferrule including a first end surface and a second end surface arranged in a first direction, and a holding portion holding the optical fibers and the fiber-shaped member. In the holding portion, a plurality of fiber insertion holes extending from the first end surface in the first direction is formed such that the optical fibers and the fiber-shaped member are insertable thereinto. One end of the optical fiber and one end of the fiber-shaped member are held by the holding portion in a state of being inserted into the fiber insertion hole. The optical fiber extends to the outside of the ferrule. The other end of the fiber-shaped member is located inside the ferrule.Type: ApplicationFiled: December 3, 2015Publication date: June 8, 2017Inventors: Kenichiro OHTSUKA, Kotaro UEDA, Tsutomu KAMADA, Junji FUKUI, Masashi OKA
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Patent number: D1043319Type: GrantFiled: July 28, 2022Date of Patent: September 24, 2024Assignee: SUMITOMO ELECTRIC OPTIFRONTIER CO., LTD.Inventors: Junji Fukui, Yoshikyo Tamekuni, Hisahiko Narukawa, Yuji Matsumoto, Tuan Nghia Duong
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Patent number: D1044482Type: GrantFiled: July 28, 2022Date of Patent: October 1, 2024Assignee: SUMITOMO ELECTRIC OPTIFRONTIER CO., LTD.Inventors: Junji Fukui, Yoshikyo Tamekuni, Hisahiko Narukawa, Yuji Matsumoto, Tuan Nghia Duong