Patents by Inventor Daisuke KAKUTA
Daisuke KAKUTA 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: 11892694Abstract: Provided is an optical fiber ribbon capable of achieving higher density and reduction in diameter and accurately placing optical fibers in V-shape grooves in a fusion machine without failure. The optical fiber ribbon 1 includes three or more of optical fibers 2 arranged in parallel and connecting portions 3 connecting adjacent two optical fibers 2 together, the connecting portions 3 being intermittently provided in each of a ribbon longitudinal direction and a ribbon width direction. The connecting portions 3 are each formed in such a manner as to fill resin into a gap S formed between adjacent two optical fibers 2, and both surfaces of the respective connecting portions 3 are each formed into a recess having a concave shape curved toward a center of the gap S to separate from lines 4,5 each connecting contact points of the optical fibers 2 when being placed on a horizontal surface.Type: GrantFiled: June 15, 2022Date of Patent: February 6, 2024Assignees: FUJIKURA LTD., NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Akira Namazue, Ken Osato, Naoki Okada, Yusuke Yamada, Daisuke Kakuta, Hisaaki Nakane, Shinya Hamaguchi
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Publication number: 20220317398Abstract: Provided is an optical fiber ribbon capable of achieving higher density and reduction in diameter and accurately placing optical fibers in V-shape grooves in a fusion machine without failure. The optical fiber ribbon 1 includes three or more of optical fibers 2 arranged in parallel and connecting portions 3 connecting adjacent two optical fibers 2 together, the connecting portions 3 being intermittently provided in each of a ribbon longitudinal direction and a ribbon width direction. The connecting portions 3 are each formed in such a manner as to fill resin into a gap S formed between adjacent two optical fibers 2, and both surfaces of the respective connecting portions 3 are each formed into a recess having a concave shape curved toward a center of the gap S to separate from lines 4,5 each connecting contact points of the optical fibers 2 when being placed on a horizontal surface.Type: ApplicationFiled: June 15, 2022Publication date: October 6, 2022Inventors: Akira Namazue, Ken Osato, Naoki Okada, Yusuke Yamada, Daisuke Kakuta, Hisaaki Nakane, Shinya Hamaguchi
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Patent number: 11422325Abstract: Provided is an optical fiber ribbon capable of achieving higher density and reduction in diameter and accurately placing optical fibers in V-shape grooves in a fusion machine without failure. The optical fiber ribbon 1 includes three or more of optical fibers 2 arranged in parallel and connecting portions 3 connecting adjacent two optical fibers 2 together, the connecting portions 3 being intermittently provided in each of a ribbon longitudinal direction and a ribbon width direction. The connecting portions 3 are each formed in such a manner as to fill resin into a gap S formed between adjacent two optical fibers 2, and both surfaces of the respective connecting portions 3 are each formed into a recess having a concave shape curved toward a center of the gap S to separate from lines 4,5 each connecting contact points of the optical fibers 2 when being placed on a horizontal surface.Type: GrantFiled: March 20, 2020Date of Patent: August 23, 2022Assignees: FUJIKURA LTD., NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Akira Namazue, Ken Osato, Naoki Okada, Yusuke Yamada, Daisuke Kakuta, Hisaaki Nakane, Shinya Hamaguchi
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Publication number: 20200218020Abstract: Provided is an optical fiber ribbon capable of achieving higher density and reduction in diameter and accurately placing optical fibers in V-shape grooves in a fusion machine without failure. The optical fiber ribbon 1 includes three or more of optical fibers 2 arranged in parallel and connecting portions 3 connecting adjacent two optical fibers 2 together, the connecting portions 3 being intermittently provided in each of a ribbon longitudinal direction and a ribbon width direction. The connecting portions 3 are each formed in such a manner as to fill resin into a gap S formed between adjacent two optical fibers 2, and both surfaces of the respective connecting portions 3 are each formed into a recess having a concave shape curved toward a center of the gap S to separate from lines 4,5 each connecting contact points of the optical fibers 2 when being placed on a horizontal surface.Type: ApplicationFiled: March 20, 2020Publication date: July 9, 2020Inventors: Akira Namazue, Ken Osato, Naoki Okada, Yusuke Yamada, Daisuke Kakuta, Hisaaki Nakane, Shinya Hamaguchi
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Patent number: 9995896Abstract: Provided is an optical fiber ribbon capable of achieving higher density and reduction in diameter and accurately placing optical fibers in V-shape grooves in a fusion machine without failure. The optical fiber ribbon 1 includes three or more of optical fibers 2 arranged in parallel and connecting portions 3 connecting adjacent two optical fibers 2 together, the connecting portions 3 being intermittently provided in each of a ribbon longitudinal direction and a ribbon width direction. The connecting portions 3 are each formed in such a manner as to fill resin into a gap S formed between adjacent two optical fibers 2, and both surfaces of the respective connecting portions 3 are each formed into a recess having a concave shape curved toward a center of the gap S to separate from lines 4,5 each connecting contact points of the optical fibers 2 when being placed on a horizontal surface.Type: GrantFiled: January 9, 2017Date of Patent: June 12, 2018Assignees: FUJIKURA LTD., NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Akira Namazue, Ken Osato, Naoki Okada, Yusuke Yamada, Daisuke Kakuta, Hisaaki Nakane, Shinya Hamaguchi
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Patent number: 9739965Abstract: Provided is an optical fiber ribbon capable of concurrently ensuring mid-span access performance and cable production performance. The optical fiber ribbon 1 includes three or more optical fibers 2 arranged in parallel and connecting portions 3 connecting the adjacent optical fibers 2, the connecting portions 3 being formed intermittently in each of a ribbon longitudinal direction X and a ribbon width direction Y. The optical fiber ribbon 1 including the connecting portions 3 having split strength which is set in the range from 1.50 gf to 21.0 gf, contributes to exhibiting both the mid-span access performance and the cable production performance.Type: GrantFiled: August 28, 2014Date of Patent: August 22, 2017Assignees: FUJIKURA LTD., NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Mizuki Isaji, Yoshie Sajima, Ken Osato, Naoki Okada, Takashi Matsuzawa, Yukiko Take, Yusuke Yamada, Shinya Hamaguchi, Daisuke Kakuta, Hisaaki Nakane
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Publication number: 20170184803Abstract: Provided is an optical fiber ribbon capable of achieving higher density and reduction in diameter and accurately placing optical fibers in V-shape grooves in a fusion machine without failure. The optical fiber ribbon 1 includes three or more of optical fibers 2 arranged in parallel and connecting portions 3 connecting adjacent two optical fibers 2 together, the connecting portions 3 being intermittently provided in each of a ribbon longitudinal direction and a ribbon width direction. The connecting portions 3 are each formed in such a manner as to fill resin into a gap S formed between adjacent two optical fibers 2, and both surfaces of the respective connecting portions 3 are each formed into a recess having a concave shape curved toward a center of the gap S to separate from lines 4,5 each connecting contact points of the optical fibers 2 when being placed on a horizontal surface.Type: ApplicationFiled: January 9, 2017Publication date: June 29, 2017Applicants: FUJIKURA, LTD., NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Akira NAMAZUE, Ken OSATO, Naoki OKADA, Yusuke YAMADA, Daisuke KAKUTA, Hisaaki NAKANE, Shinya HAMAGUCHI
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Publication number: 20170115461Abstract: Provided is an optical fiber ribbon capable of achieving higher density and reduction in diameter and accurately placing optical fibers in V-shape grooves in a fusion machine without failure. The optical fiber ribbon 1 includes three or more of optical fibers 2 arranged in parallel and connecting portions 3 connecting adjacent two optical fibers 2 together, the connecting portions 3 being intermittently provided in each of a ribbon longitudinal direction and a ribbon width direction. The connecting portions 3 are each formed in such a manner as to fill resin into a gap S formed between adjacent two optical fibers 2, and both surfaces of the respective connecting portions 3 are each formed into a recess having a concave shape curved toward a center of the gap S to separate from lines 4,5 each connecting contact points of the optical fibers 2 when being placed on a horizontal surface.Type: ApplicationFiled: January 9, 2017Publication date: April 27, 2017Applicants: FUJIKURA, LTD., NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Akira NAMAZUE, Ken OSATO, Naoki OKADA, Yusuke YAMADA, Daisuke KAKUTA, Hisaaki NAKANE, Shinya HAMAGUCHI
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Patent number: 9541722Abstract: An optical fiber ribbon includes a plurality of optical fiber cores arranged in parallel spaced from each other; and a tape forming member having a coating portion covering an outer circumference of the optical fiber cores, and a coupling portion, integrally formed with the coating portion, intermittently coupling adjacent optical fiber cores, wherein the coating portion has an opening portion to expose a part of surfaces of the optical fiber cores, and at least a part of the coating portion is continuous in a longitudinal direction of the optical fiber cores.Type: GrantFiled: April 28, 2014Date of Patent: January 10, 2017Assignees: FUJIKURA LTD., NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Yoshie Sajima, Takashi Matsuzawa, Mizuki Isaji, Ken Osato, Naoki Okada, Hisaaki Nakane, Yusuke Yamada, Daisuke Kakuta, Shinya Hamaguchi, Yukihiko Shibata
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Publication number: 20160161692Abstract: Provided is an optical fiber ribbon capable of achieving higher density and reduction in diameter and accurately placing optical fibers in V-shape grooves in a fusion machine without failure. The optical fiber ribbon 1 includes three or more of optical fibers 2 arranged in parallel and connecting portions 3 connecting adjacent two optical fibers 2 together, the connecting portions 3 being intermittently provided in each of a ribbon longitudinal direction and a ribbon width direction. The connecting portions 3 are each formed in such a manner as to fill resin into a gap S formed between adjacent two optical fibers 2, and both surfaces of the respective connecting portions 3 are each formed into a recess having a concave shape curved toward a center of the gap S to separate from lines 4,5 each connecting contact points of the optical fibers 2 when being placed on a horizontal surface.Type: ApplicationFiled: April 11, 2014Publication date: June 9, 2016Applicants: NIPPON TELEGRAPH AND TELEPHONE CORPORATION, FUJIKURA, LTD.Inventors: Akira NAMAZUE, Ken OSATO, Naoki OKADA, Yusuke YAMADA, Daisuke KAKUTA, Hisaaki NAKANE, Shinya HAMAGUCHI
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Publication number: 20160070079Abstract: An optical fiber ribbon includes a plurality of optical fiber cores arranged in parallel spaced from each other; and a tape forming member having a coating portion covering an outer circumference of the optical fiber cores, and a coupling portion, integrally formed with the coating portion, intermittently coupling adjacent optical fiber cores, wherein the coating portion has an opening portion to expose a part of surfaces of the optical fiber cores, and at least a part of the coating portion is continuous in a longitudinal direction of the optical fiber cores.Type: ApplicationFiled: April 28, 2014Publication date: March 10, 2016Applicants: NIPPON TELEGRAPH AND TELEPHONE CORPORATION, FUJIKURA LTD.Inventors: Yoshie SAJIMA, Takashi MATSUZAWA, Mizuki ISAJI, Ken OSATO, Naoki OKADA, Hisaaki NAKANE, Yusuke YAMADA, Daisuke KAKUTA, Shinya HAMAGUCHI, Yukihiko SHIBATA
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Publication number: 20150049997Abstract: Provided is an optical fiber ribbon capable of concurrently ensuring mid-span access performance and cable production performance. The optical fiber ribbon 1 includes three or more optical fibers 2 arranged in parallel and connecting portions 3 connecting the adjacent optical fibers 2, the connecting portions 3 being formed intermittently in each of a ribbon longitudinal direction X and a ribbon width direction Y. The optical fiber ribbon 1 including the connecting portions 3 having split strength which is set in the range from 1.50 gf to 21.0 gf, contributes to exhibiting both the mid-span access performance and the cable production performance.Type: ApplicationFiled: August 28, 2014Publication date: February 19, 2015Applicants: NIPPON TELEGRAPH AND TELEPHONE CORPORATION, FUJIKURA LTD.Inventors: Mizuki ISAJI, Yoshie SAJIMA, Ken OSATO, Naoki OKADA, Takashi MATSUZAWA, Yukiko TAKE, Yusuke YAMADA, Shinya HAMAGUCHI, Daisuke KAKUTA, Hisaaki NAKANE