Patents by Inventor Yuji Nakura

Yuji Nakura 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).

  • Publication number: 20190067865
    Abstract: The present invention restricts unauthorized access to signals without using electrical power. A second connector is configured for connection to a first connector. The first connector includes multiple first pins and a first short circuit member. The first short circuit member short-circuits a group of the first pins in an unconnected state in which the first connector is not connected to the second connector. The second connector includes multiple second pins and a short circuit canceling member. The second pins are in contact with the first pins in a connected state in which the first connector is connected to the second connector. In the connected state, the short circuit canceling member causes the first short circuit member to undergo deformation and cancels short-circuiting of the group of first pins.
    Type: Application
    Filed: July 29, 2016
    Publication date: February 28, 2019
    Inventor: Yuji Nakura
  • Publication number: 20180236953
    Abstract: Unauthorized access of signals is restricted without significantly complicating the structure of a vehicle-mounted connector. A communication circuit-side connector is mounted on a communication circuit. The communication circuit-side connector includes a signal transmission pin that is used to transmit a signal, a pair of power supply pins that are used to supply power, and short circuit pins that are short-circuited to each other by a short circuit line. The short circuit pins function as a power supply path due to the power supply pin and the short circuit pins being short-circuited by the short circuit pin and the short circuit line of the signal processing circuit-side connector.
    Type: Application
    Filed: July 29, 2016
    Publication date: August 23, 2018
    Inventor: Yuji Nakura
  • Patent number: 9316798
    Abstract: An optical assembly includes a circuit board including an electrically conductive path formed by printed wiring technology, a photoelectric conversion element connected to the circuit board via the electrically conductive path, a resin member made of light transmissive synthetic resin and attached to the circuit board, and a shielding member made of metal. The resin member includes a sleeve into which a ferrule attached to an end of an optical fiber is inserted and integrally includes a lens through which an optical path passes. The optical path extends between the sleeve and the photoelectric conversion element. The shielding member is connected to the circuit board and arranged to cover the photoelectric conversion element. The shielding member includes a window through which the optical path extends to the photoelectric conversion element.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: April 19, 2016
    Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Kiyoshi Katou, Tomomi Sano, Yuji Nakura, Masayuki Inoue
  • Patent number: 9075207
    Abstract: A method of manufacturing an optical module includes the steps of applying the invisible light onto the resin member and the optical device, observing, with use of a camera, a part of the resin member located at the optical fiber coupling plane and an image formed at the optical fiber coupling plane by the optical device active layer while applying the invisible light onto the resin member and the optical device, aligning positions of the resin member and the circuit board with respect to each other while observing the part of the resin member located at the optical fiber coupling plane and the image formed at the optical fiber coupling plane, and fixing the resin member to the circuit board while maintaining the aligned positions of the resin member and the circuit board.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: July 7, 2015
    Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Hiroshi Tateishi, Yuji Nakura, Tomomi Sano, Kiyoshi Kato, Mitsuaki Nishie
  • Patent number: 8985875
    Abstract: An optical connector includes a housing, a photoelectric conversion circuit board on which a photoelectric conversion element is mounted, and a resin member made of a light transmissive synthetic resin and arranged on a plate surface of the photoelectric conversion circuit board so as to cover the photoelectric conversion element. The photoelectric conversion circuit board is housed in the housing. The resin member includes a sleeve to which a ferrule attached to an end of an optical fiber is fitted. The sleeve of the resin member is arranged such that an axial direction thereof is substantially perpendicular to the plate surface of the photoelectric circuit board. The resin member integrally includes a lens on an axial line of the sleeve such that the lens faces the photoelectric conversion element.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: March 24, 2015
    Assignees: Autonetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Kiyoshi Kato, Tomomi Sano, Yuji Nakura
  • Publication number: 20130336620
    Abstract: A method of manufacturing an optical module includes the steps of applying the invisible light onto the resin member and the optical device, observing, with use of a camera, a part of the resin member located at the optical fiber coupling plane and an image formed at the optical fiber coupling plane by the optical device active layer while applying the invisible light onto the resin member and the optical device, aligning positions of the resin member and the circuit board with respect to each other while observing the part of the resin member located at the optical fiber coupling plane and the image formed at the optical fiber coupling plane, and fixing the resin member to the circuit board while maintaining the aligned positions of the resin member and the circuit board.
    Type: Application
    Filed: April 5, 2012
    Publication date: December 19, 2013
    Applicants: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Hiroshi Tateishi, Yuji Nakura, Tomomi Sano, Kiyoshi Kato, Mitsuaki Nishie
  • Publication number: 20130272663
    Abstract: An optical assembly includes a circuit board including an electrically conductive path formed by printed wiring technology, a photoelectric conversion element connected to the circuit board via the electrically conductive path, a resin member made of light transmissive synthetic resin and attached to the circuit board, and a shielding member made of metal. The resin member includes a sleeve into which a ferrule attached to an end of an optical fiber is inserted and integrally includes a lens through which an optical path passes. The optical path extends between the sleeve and the photoelectric conversion element. The shielding member is connected to the circuit board and arranged to cover the photoelectric conversion element. The shielding member includes a window through which the optical path extends to the photoelectric conversion element.
    Type: Application
    Filed: December 1, 2011
    Publication date: October 17, 2013
    Applicants: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Kiyoshi Katou, Tomomi Sano, Yuji Nakura, Masayuki Inoue
  • Publication number: 20130266278
    Abstract: An optical connector includes a housing, a photoelectric conversion circuit board on which a photoelectric conversion element is mounted, and a resin member made of a light transmissive synthetic resin and arranged on a plate surface of the photoelectric conversion circuit board so as to cover the photoelectric conversion element. The photoelectric conversion circuit board is housed in the housing. The resin member includes a sleeve to which a ferrule attached to an end of an optical fiber is fitted. The sleeve of the resin member is arranged such that an axial direction thereof is substantially perpendicular to the plate surface of the photoelectric circuit board. The resin member integrally includes a lens on an axial line of the sleeve such that the lens faces the photoelectric conversion element.
    Type: Application
    Filed: December 1, 2011
    Publication date: October 10, 2013
    Applicants: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Kiyoshi Kato, Tomomi Sano, Yuji Nakura
  • Patent number: 6939054
    Abstract: An optical connector is constituted of a connector housing, a shielding case, and optical elements. The shielding case is split into a case main body section and a heatsink mechanism section, both joined together to constitute housing recesses. While the case main body section and the heatsink mechanism section are joined together, element main body sections are held between them. A non-joint plane of the heatsink mechanism section is housed in a case housing recess of the connector housing in an outwardly exposed state. A corrugated heatsink fin section is formed in the non-joint plane. The housing recesses into which the element main body sections are to be housed are partitioned from each other.
    Type: Grant
    Filed: April 1, 2002
    Date of Patent: September 6, 2005
    Assignees: Autonetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Yuji Nakura, Hitoshi Imazu, Kazuhiro Asada
  • Patent number: 6893161
    Abstract: An optical connector device to be used in the field of optical communication between equipments in an office automation system, a factory automation system, an automobile and so on. In this optical connector device, a fitting projection portion of a plug-type optical connector is fitted in a fitting recess in a socket-type optical connector. A latch portion, formed at the plug-type optical connector, is releasably and retainingly engaged with a latch retaining portion formed at the socket-type optical connector. An auxiliary lock mechanism is provided between an inner peripheral surface of the fitting recess and an outer peripheral surface of the fitting projection portion. The auxiliary lock mechanism includes a lock recess and a lock projection which are releasably fitted together when the latch portion is to be engaged with the latch retaining portion.
    Type: Grant
    Filed: November 19, 2002
    Date of Patent: May 17, 2005
    Assignees: Autonetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventor: Yuji Nakura
  • Patent number: 6860643
    Abstract: An optical connector is constituted of a connector housing, a shielding case, and optical elements. The shielding case is split into a case main body section and a heatsink mechanism section, both joined together to constitute housing recesses. While the case main body section and the heatsink mechanism section are joined together, element main body sections are held between them. A non-joint plane of the heatsink mechanism section is housed in a case housing recess of the connector housing in an outwardly exposed state. A corrugated heatsink fin section is formed in the non-joint plane. The housing recesses into which the element main body sections are to be housed are partitioned from each other.
    Type: Grant
    Filed: October 9, 2003
    Date of Patent: March 1, 2005
    Assignees: Autonetworks Technologies, Limited, Sumitomo Wiring Systems, Limited, Sumitomo Electric Industries, Limited
    Inventors: Yuji Nakura, Hitoshi Imazu, Kazuhiro Asada
  • Patent number: 6817775
    Abstract: An optical connector according to this invention includes a connector housing having a casing receiving recess formed therein, a metal shield casing for receiving an element body portion of an optical element therein, and a metal shield cover for covering the connector housing. The metal shield casing is received and held in the casing receiving recess. The metal shield casing and the metal shield cover are thermally connected to each other being in mutual contact; the side surface of the metal shield casing is exposed to the exterior of the connector housing to be in surface-to-surface contact with the metal shield cover and therefore heat, generated by the optical element, is transferred to the metal shield cover from the metal shield casing and is easily radiated from the metal shield cover to the exterior. The metal shield casing and the metal shield cover may be formed integrally to constitute a shield member.
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: November 16, 2004
    Assignees: Sumitomo Wiring Systems, Ltd., Autonetworks Technologies, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Yuji Nakura, Hitoshi Imazu, Kazuhiro Asada
  • Patent number: 6796726
    Abstract: In an optical connector, element body portions of optical elements are fittingly received respectively in receiving recesses formed in a connector housing, and lead terminals of each optical element project outwardly from the receiving recess. The connector housing is made of a metal material, and ground contact surfaces for being held in surface-to-surface contact with a grounding circuit is formed on and projects from a lower surface of the connector housing beyond which the lead terminals project outwardly, and an insulating portion made of an insulating material is formed at a peripheral edge portion of an opening of each receiving recess over an entire periphery thereof.
    Type: Grant
    Filed: March 29, 2002
    Date of Patent: September 28, 2004
    Assignees: Sumitomo Wiring Systems, Ltd., Autonetworks Technologies, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Yuji Nakura, Hitoshi Imazu, Kazuhiro Asada
  • Patent number: 6776652
    Abstract: An optical coupling connector portion, including ferrule portions, is provided at a widthwise central portion of a connector housing having a shape flattened in a direction of the width thereof. Female connection terminal portions, serving as electrical connection terminals, are provided in a distributed manner at widthwise opposite side portions of the connector housings disposed outwardly respectively of opposite sides of the optical coupling connector portion. An optical coupling connector portion, including ferrule receiving portions for respectively receiving the ferrule portions, is provided at a widthwise central portion of a second connector housing. Male connection terminal portions, serving as electrical connection terminal portions, are provided in a distributed manner at widthwise opposite side portions of the connector housing in corresponding relation to the female connection terminal portions.
    Type: Grant
    Filed: April 29, 2002
    Date of Patent: August 17, 2004
    Assignees: Autonetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Yuji Nakura, Hitoshi Imazu, Kazuhiro Asada
  • Publication number: 20040076380
    Abstract: A first housing for storing and holding a surface-implemented type optical element and a second housing to which an optical connector of the other party fits and connects are provided separately. In the first housing, a fixing pin to be soldered to a wiring substrate is vertically provided, and a guide sleeve portion for guiding an optical fiber toward the optical element projects. The position mounting the first housing can be freely adjusted in a range that the fixing pin can be movably inserted to a through-hole of the wiring substrate and can move inside. The second housing has a lock portion for maintaining the connection state with the optical connector of the other party.
    Type: Application
    Filed: October 8, 2003
    Publication date: April 22, 2004
    Applicants: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Kazuhiro Asada, Hayato Yuuki, Yuji Nakura, Momoe Yagi
  • Publication number: 20040076385
    Abstract: An optical connector electrically connects a surface-implemented type optical element held at a position separated by a predetermined distance from a wiring substrate and a wiring pattern of the wiring substrate. A surface-implemented type optical element is held at a height position apart from the bottom of the connector housing by a predetermined distance within an element-storing depression of the connector housing. The back of the element-storing depression has an opening that is closed by a lid portion. A lead frame is provided in the lid portion. A connecting portion on one end of the lead frame is in contact with an electrode portion of the optical element within the element-storing depression. A soldering portion on an other end of the lead frame is exposed to the outside of the connector housing to be soldered to a wiring pattern of a wiring substrate. A lock-associating portion with a lock piece is integrally provided on the bottom surface side of the connector housing.
    Type: Application
    Filed: October 8, 2003
    Publication date: April 22, 2004
    Applicants: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Kazuhiro Asada, Hayato Yuuki, Yuji Nakura, Momoe Yagi
  • Publication number: 20040071406
    Abstract: An optical connector is constituted of a connector housing, a shielding case, and optical elements. The shielding case is split into a case main body section and a heatsink mechanism section, both joined together to constitute housing recesses. While the case main body section and the heatsink mechanism section are joined together, element main body sections are held between them. A non-joint plane of the heatsink mechanism section is housed in a case housing recess of the connector housing in an outwardly exposed state. A corrugated heatsink fin section is formed in the non-joint plane. The housing recesses into which the element main body sections are to be housed are partitioned from each other.
    Type: Application
    Filed: October 9, 2003
    Publication date: April 15, 2004
    Applicants: Autonetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Yuji Nakura, Hitoshi Imazu, Kazuhiro Asada
  • Publication number: 20040071412
    Abstract: An optical connector is constituted of a connector housing, a shielding case, and optical elements. The shielding case is split into a case main body section and a heatsink mechanism section, both joined together to constitute housing recesses. While the case main body section and the heatsink mechanism section are joined together, element main body sections are held between them. A non-joint plane of the heatsink mechanism section is housed in a case housing recess of the connector housing in an outwardly exposed state. A corrugated heatsink fin section is formed in the non-joint plane. The housing, recesses into which the element main body sections are to be housed are partitioned from each other.
    Type: Application
    Filed: October 9, 2003
    Publication date: April 15, 2004
    Applicants: Autonetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Yuji Nakura, Hitoshi Imazu, Kazuhiro Asada
  • Patent number: 6659658
    Abstract: In an optical connector device configured by a combination of an element-side optical connector 10 which accommodates an optical element D, and a fiber-side optical connector 30 which holds an optical fiber, an element accommodating housing member 11 of the optical connector 10, and a fiber holding housing member 31 of the optical connector 30 are formed by an electrically conductive resin. In a state where the optical connectors 10 and 30 are connected to each other, the fiber holding housing member 31 is electrically connected to the element accommodating housing member 11.
    Type: Grant
    Filed: March 21, 2002
    Date of Patent: December 9, 2003
    Assignees: Autonetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Kazuhiro Asada, Hitoshi Imazu, Yuji Nakura
  • Patent number: 6655855
    Abstract: An optical connector is housed in a connector housing member 20 while an optical element 1 is housed in a shield case 10. The optical connector includes a connector housing member 20 which is made of resin and has a case storage recess 25 capable of housing the shield case 10, and a metal heatsink 30 which is attached to the connector housing member 20 so as to close a rear opening of the case storage recess 25. The heatsink section 30 comes into contact with the shield case 10 and is fitted into a rear opening of the case storage recess 25 while being exposed to the outside.
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: December 2, 2003
    Assignees: Autonetworks Technologies, Ltd., Sumitomo Wiring System, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Yuji Nakura, Hitoshi Imazu, Kazuhiro Asada