Patents by Inventor Kenichiro Ohtsuka

Kenichiro Ohtsuka 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).

  • Patent number: 10641971
    Abstract: An optical connector comprises: an inner housing including an engagement recess for engaging an optical adaptor on its surface; a boot connected to a rear side of the inner housing; a first outer housing covering the engagement recess; and a second outer housing covering a part of the first outer housing and provided freely movably in a front-rear direction relative to the first outer housing. When the second outer housing moves frontward, the engagement recess is exposed by the second outer housing and the inner housing moving relative to the first outer housing, and when the second outer housing moves rearward, the engagement recess is exposed by the second outer housing and the first outer housing moving relative to the inner housing.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: May 5, 2020
    Assignee: SEI OPTIFRONTIER CO., LTD.
    Inventors: Tsutomu Kamada, Kenichiro Ohtsuka, Motoyoshi Kimura
  • Patent number: 10539745
    Abstract: An optical connector 1 is an optical connector connected to an external optical adapter. The optical connector 1 is provided with: an inner housing 3, in a surface of which engaging holes for engaging the optical adapter is provided; a boot 6 connected to the inner housing 3 on a side opposite the optical adapter in a forward/backward direction; and a first outer housing 4 and a second outer housing 5 covering the engaging holes and mounted on the inner housing 3 to be freely movable in the forward/backward direction. As the second outer housing 5 moves backward, the engaging holes of the inner housing 3 are exposed. The second outer housing 5 has cutout parts 5c which are cut out from a back end surface 5f in the forward direction and which a front end part of the boot 6 enters.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: January 21, 2020
    Assignee: SEI Optifrontier Co., Ltd.
    Inventors: Tsutomu Kamada, Kenichiro Ohtsuka, Yuji Suzuki, Motoyoshi Kimura, Yoshinobu Oki
  • Publication number: 20190236374
    Abstract: An information processing apparatus (10) includes a time and space information acquisition unit (110) that acquires high-risk time and space information indicating a spatial region with an increased possibility of an accident occurring or of a crime being committed and a corresponding time slot, a possible surveillance target acquisition unit (120) that identifies a video to be analyzed from among a plurality of videos generated by capturing an image of each of a plurality of places, on the basis of the high-risk time and space information, and analyzes the identified video to acquire information of a possible surveillance target, and a target time and space identification unit (130) that identifies at least one of a spatial region where surveillance is to be conducted which is at least a portion of the spatial region or a time slot when surveillance is to be conducted, from among the spatial region and the time slot indicated by the high-risk time and space information, on the basis of the information of the
    Type: Application
    Filed: April 3, 2019
    Publication date: August 1, 2019
    Applicant: NEC CORPORATION
    Inventors: Junko NAKAGAWA, Ryoma OAMI, Kenichiro IDA, Mika SAITO, Shohzoh NAGAHAMA, Akinari FURUKAWA, Yasumasa OHTSUKA, Junichi FUKUDA, Fumi IKEDA, Manabu MORIYAMA, Fumie EINAGA, Tatsunori YAMAGAMI, Keisuke HIRAYAMA, Yoshitsugu KUMANO, Hiroki ADACHI
  • Patent number: 10328901
    Abstract: A user identification system is provided, which includes an in-vehicle apparatus used by multiple users and a vehicular portable device carried by a user acting as a driver and associated with the in-vehicle apparatus. The vehicular portable device detects received signal strength of signals received from the portable terminals at multiple time points, and based on the received signal strength detected by the received signal strength detector, determines a driver terminal which is the portable terminal carried by the user acting as the driver. The vehicular portable device determines as the driver terminal the portable terminal that provides a smallest degree of change of the received signal strength detected multiple times.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: June 25, 2019
    Assignee: DENSO CORPORATION
    Inventors: Kenichiro Sanji, Noritaka Hirao, Suguru Matsushita, Takatoshi Sekizawa, Yasuhiro Tanaka, Mitsugi Ohtsuka
  • Publication number: 20190079250
    Abstract: An optical connector comprises: an inner housing including an engagement recess for engaging an optical adaptor on its surface; a boot connected to a rear side of the inner housing; a first outer housing covering the engagement recess; and a second outer housing covering a part of the first outer housing and provided freely movably in a front-rear direction relative to the first outer housing. When the second outer housing moves frontward, the engagement recess is exposed by the second outer housing and the inner housing moving relative to the first outer housing, and when the second outer housing moves rearward, the engagement recess is exposed by the second outer housing and the first outer housing moving relative to the inner housing.
    Type: Application
    Filed: March 9, 2017
    Publication date: March 14, 2019
    Applicant: SEI Optifrontier Co., Ltd.
    Inventors: Tsutomu KAMADA, Kenichiro OHTSUKA, Motoyoshi KIMURA
  • Patent number: 10197739
    Abstract: An optical connector plug includes an optical connector having an optical fiber built therein, and a cover member receiving the optical connector therein. The cover member includes a set of protrusions provided to protrude forward relative to a front end surface of the optical connector. A set of cutout portions as space portions are provided between the set of protrusions, and the set of cutout portions are arranged at locations opposing each other around the optical connector.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: February 5, 2019
    Assignee: SEI OPTIFRONTIER CO., LTD.
    Inventors: Kenichiro Ohtsuka, Yuji Suzuki, Norihiko Kitahara, Motoyoshi Kimura, Masanori Yamanaka, Akihiko Miyada, Seiya Otokita, Tatsuhiko Shitomi
  • Patent number: 10114179
    Abstract: An optical connector is an optical connector that is connected to another connector in a predetermined connection direction. The optical connector includes a ferrule that includes insertion holes into which guide pins to be connected to another connector are to be inserted; and a pin keeper 20 that is provided on a side of the ferrule opposite to the another connector and includes retaining holes 21 retaining the guide pins inserted into the insertion holes. The pin keeper 20 includes a pair of side portions 22 in which the retaining holes 21 are formed, and a bottom portion 23 that connects end portions of the pair of side portions 22. The retaining holes 21 are formed in a shape in which inside surfaces of the side portions 22 facing each other are notched.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: October 30, 2018
    Assignee: SEI OPTIFRONTIER CO., LTD.
    Inventors: Tsutomu Kamada, Kenichiro Ohtsuka, Motoyoshi Kimura, Tatsuhiko Shitomi
  • Patent number: 10101551
    Abstract: 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: Grant
    Filed: June 5, 2017
    Date of Patent: October 16, 2018
    Assignees: SEI OPTIFRONTIER CO., LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Junji Fukui, Kenichiro Ohtsuka, Yuji Suzuki, Hiroyasu Toyooka, Takayuki Suzuki
  • Patent number: 9958620
    Abstract: 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: Grant
    Filed: December 3, 2015
    Date of Patent: May 1, 2018
    Assignee: SEI Optifrontier Co., Ltd.
    Inventors: Kenichiro Ohtsuka, Kotaro Ueda, Tsutomu Kamada, Junji Fukui, Masashi Oka
  • Patent number: 9921376
    Abstract: 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: Grant
    Filed: December 3, 2015
    Date of Patent: March 20, 2018
    Assignee: SEI Optifrontier Co., Ltd.
    Inventors: Kenichiro Ohtsuka, Kotaro Ueda, Tsutomu Kamada, Junji Fukui, Masashi Oka
  • Publication number: 20180031773
    Abstract: An optical connector plug includes an optical connector having an optical fiber built therein, and a cover member receiving the optical connector therein. The cover member includes a set of protrusions provided to protrude forward relative to a front end surface of the optical connector. A set of cutout portions as space portions are provided between the set of protrusions, and the set of cutout portions are arranged at locations opposing each other around the optical connector.
    Type: Application
    Filed: February 18, 2016
    Publication date: February 1, 2018
    Applicant: SEI OPTIFRONTIER CO., LTD.
    Inventors: Kenichiro OHTSUKA, Yuji SUZUKI, Norihiko KITAHARA, Motoyoshi KIMURA, Masanori YAMANAKA, Akihiko MIYADA, Seiya OTOKITA, Tatsuhiko SHITOMI
  • Publication number: 20170359091
    Abstract: 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: Application
    Filed: June 5, 2017
    Publication date: December 14, 2017
    Applicants: SEI Optifrontier Co., Ltd., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Junji FUKUI, Kenichiro OHTSUKA, Yuji SUZUKI, Hiroyasu TOYOOKA, Takayuki SUZUKI
  • Publication number: 20170315308
    Abstract: An optical connector is an optical connector that is connected to another connector in a predetermined connection direction. The optical connector includes a ferrule that includes insertion holes into which guide pins to be connected to another connector are to be inserted; and a pin keeper 20 that is provided on a side of the ferrule opposite to the another connector and includes retaining holes 21 retaining the guide pins inserted into the insertion holes. The pin keeper 20 includes a pair of side portions 22 in which the retaining holes 21 are formed, and a bottom portion 23 that connects end portions of the pair of side portions 22. The retaining holes 21 are formed in a shape in which inside surfaces of the side portions 22 facing each other are notched.
    Type: Application
    Filed: October 28, 2015
    Publication date: November 2, 2017
    Applicant: SEI Optifrontier Co., Ltd.
    Inventors: Tsutomu KAMADA, Kenichiro OHTSUKA, Motoyoshi KIMURA, Tatsuhiko SHITOMI
  • Patent number: 9804344
    Abstract: 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: Grant
    Filed: December 3, 2015
    Date of Patent: October 31, 2017
    Assignee: SEI Optifrontier Co., Ltd.
    Inventors: Kenichiro Ohtsuka, Kotaro Ueda, Tsutomu Kamada, Junji Fukui, Masashi Oka
  • Publication number: 20170254961
    Abstract: An optical connector 1 is an optical connector connected to an external optical adapter. The optical connector 1 is provided with: an inner housing 3, in a surface of which engaging holes for engaging the optical adapter is provided; a boot 6 connected to the inner housing 3 on a side opposite the optical adapter in a forward/backward direction; and a first outer housing 4 and a second outer housing 5 covering the engaging holes and mounted on the inner housing 3 to be freely movable in the forward/backward direction. As the second outer housing 5 moves backward, the engaging holes of the inner housing 3 are exposed. The second outer housing 5 has cutout parts 5c which are cut out from a back end surface 5f in the forward direction and which a front end part of the boot 6 enters.
    Type: Application
    Filed: September 9, 2015
    Publication date: September 7, 2017
    Applicant: SEI OPTIFRONTIER CO., LTD.
    Inventors: Tsutomu KAMADA, Kenichiro OHTSUKA, Yuji SUZUKI, Motoyoshi KIMURA, Yoshinobu OKI
  • Publication number: 20170160495
    Abstract: 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: Application
    Filed: December 3, 2015
    Publication date: June 8, 2017
    Inventors: Kenichiro OHTSUKA, Kotaro UEDA, Tsutomu KAMADA, Junji FUKUI, Masashi OKA
  • Patent number: 9176295
    Abstract: The stranded optical cable 10 includes a plurality of stranded multicore optical cables 12 and a cable sheath 16 covering the multicore optical cables 12, each multicore optical cable 12 including at least two of optical units 13 as a pair and a unit sheath 14 covering the optical units 13, each optical unit 13 being formed by bundling a plurality of optical fibers. And, parts of the cable sheath corresponding to both ends of the stranded optical cable 10 are removed to expose the multicore optical cables 12 certain lengths so that the optical connectors 21 are connected to the multicore optical cables 12, respectively.
    Type: Grant
    Filed: June 9, 2011
    Date of Patent: November 3, 2015
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Itaru Sakabe, Kazuyuki Soma, Tomoyuki Hattori, Kenichiro Ohtsuka, Masakazu Shigehara
  • Patent number: 8511910
    Abstract: It is an object to obtain an optical connector capable of implementing a more reduction in a cost of a work for carrying out an assembly into a site optical fiber, and a method of assembling the optical connector. An almost sheet-like protecting member 17 for transmitting a light in a predetermined refractive index is stuck to a tip surface of a ferrule 3 having a fiber inserting hole 15 penetrating therethrough with the fiber inserting hole 15 covered, and an optical fiber 14 positioned by a positioning mechanism 5 to be coupled to a rear part of the ferrule 3 has a tip surface inserted through the fiber inserting hole 15 of the ferrule 3 to abut on the protecting member 17 with an elastic force.
    Type: Grant
    Filed: May 9, 2008
    Date of Patent: August 20, 2013
    Assignees: Sumitomo Electric Industries, Ltd., Nippon Telegraph and Telephone Corporation
    Inventors: Kenichiro Ohtsuka, Masaki Ohmura, Masahiro Hamada, Mitsuru Kihara, Hitoshi Son
  • Patent number: 8480311
    Abstract: An optical connector in which works of attaching an incorporated optical fiber to a ferrule, removing a coating of the tip end side of a coated optical fiber, and attaching an optical connector to the coated optical fiber can be made more efficient, and the transmission characteristics can be prevented from being lowered in the optical connector, and a method of attaching the optical connector to a coated optical fiber are provided. An optical connector 101 includes: a ferrule 140 into which a glass fiber 121 that is obtained by peeling a coating 124 of a coated optical fiber 120 is to be inserted; a fixing portion 130 which fixes the coated optical fiber 120 inserted into the ferrule 140; and a coating-removing portion 110 which removes the coating 124 from an end portion of the coated optical fiber 120, by means of a force of inserting the coated optical fiber 120 into the optical connector 101.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: July 9, 2013
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Kenichiro Ohtsuka, Masahiro Hamada, Masaki Ohmura, Mitsuaki Tamura, Mitsuru Kihara, Ryo Koyama, Hitoshi Son
  • Patent number: 8478100
    Abstract: An optical cable gripping member which prevents the kinds of splicing devices from being diversified, thereby enabling reduction of the labor of component management and lowering of the production cost to be realized is obtained. In a cable gripping member 5 which is to be attached to a splicing device 1 to hold an optical fiber cable 121 from its outer sheath, a spacer 17 which fills a gap between one inner wall surface 15a of a tubular space 15 through which the optical fiber cable 121 is to be passed, and the spacer 17 in the tubular space 15 is formed monolithically with one end of the one inner wall surface 15a in a manner that the spacer 17 is attachable to and detachable from the one inner wall surface 15a. The spacer 17 is attached to or detached from the one inner wall surface 15a, thereby enabling a plurality of optical fiber cables of different sizes to be held.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: July 2, 2013
    Assignees: Sumitomo Electric Industries, Ltd., Nippon Telegraph and Telephone Corporation
    Inventors: Yoshinobu Toda, Daizo Nishioka, Takayasu Yamauchi, Yukihiro Yokomachi, Kenichiro Ohtsuka, Keiichiro Sugimoto, Shinichi Niwa