Patents by Inventor Takahisa Yoshizumi

Takahisa Yoshizumi 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: 20180228055
    Abstract: An electronic apparatus includes a reservoir tank that stores a liquid refrigerant, a pump, a pump-lowering parts that allows the pump to be lowered to a position that is lower than the reservoir tank, and a first flow path member that is coupled between the reservoir tank and the pump, and is flexible.
    Type: Application
    Filed: January 10, 2018
    Publication date: August 9, 2018
    Applicant: FUJITSU LIMITED
    Inventors: Takahisa Yoshizumi, HAYAMI ABE, Akira MATSUO, Kazunori Omori
  • Patent number: 9989698
    Abstract: A light pipe includes a plurality of light guide units, and a connection unit that integrally connects the plurality of light guide units, the connection unit including a light interference suppression hole formed between the light guide units adjacent to each other, the light interference suppression hole including at least one surface that satisfies a total reflection condition of light entering the light interference suppression hole from the connection unit.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: June 5, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Takahisa Yoshizumi, Chiyu Ishizuka
  • Patent number: 9739959
    Abstract: An optical transmission apparatus includes a substrate and a heatsink. The substrate is a substrate on which multiple light sources and a heat generating part are mounted. The heatsink includes a base portion, a fin portion, and multiple light guiding paths. The base portion is arranged on a surface of the heat generating part on an opposite side to the substrate. The fin portion rises up from a surface of the base portion on an opposite side to the heat generating part. The multiple light guiding paths are formed inside the base portion, and guide lights emitted by the multiple light sources to multiple output destinations corresponding to the multiple light sources.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: August 22, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Kondo Masahiko, Koji Kano, Yoshiaki Tobimatsu, Takahisa Yoshizumi, Kazuya Satoh
  • Patent number: 9628182
    Abstract: A repeater includes: a pressure-tight casing to be arranged on seabed or in sea; and a feedthrough having a plurality of lead sections each configured to connect a circuit housed in the pressure-tight casing with a cable outside the pressure-tight casing, wherein the plurality of lead sections include at least a power wire and an electric signal wire, and at least two of the plurality of lead sections have a difference in length from each other.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: April 18, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Naoto Hoshiyama, Takahisa Yoshizumi
  • Patent number: 9470862
    Abstract: An optical transmission device includes: a first cage and a second cage provided in parallel on a top surface of a substrate, into which modules connectable to an optical transmission path are inserted, respectively; a first heat sink including: a first main body arranged along surfaces of the first cage and the second cage at the opposite side to the substrate, and a first plate member rising from a bottom surface of the first main body which faces the substrate, and arranged between the first cage and the second cage.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: October 18, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Takahisa Yoshizumi, Naoto Hoshiyama
  • Publication number: 20160202434
    Abstract: An optical transmission apparatus includes a substrate and a heatsink. The substrate is a substrate on which multiple light sources and a heat generating part are mounted. The heatsink includes a base portion, a fin portion, and multiple light guiding paths. The base portion is arranged on a surface of the heat generating part on an opposite side to the substrate. The fin portion rises up from a surface of the base portion on an opposite side to the heat generating part. The multiple light guiding paths are formed inside the base portion, and guide lights emitted by the multiple light sources to multiple output destinations corresponding to the multiple light sources.
    Type: Application
    Filed: December 18, 2015
    Publication date: July 14, 2016
    Applicant: FUJITSU LIMITED
    Inventors: KONDO MASAHIKO, Koji Kano, Yoshiaki Tobimatsu, Takahisa Yoshizumi, Kazuya Satoh
  • Patent number: 9226381
    Abstract: A heat-transfer plate includes a pool portion configured to have a partially-depressed surface and to be loaded with thermally-conductive resin that is in contact with a heating component so as to transfer the heat from the heating component to the heat-transfer plate, a resin-amount check portion configured to have a plurality of depths and to be disposed at a position where the thermally-conductive resin is viewable in a state where the printed circuit board is fixed to the heat-transfer plate, a levee portion configured to be provided between the pool portion and the resin-amount check portion and to suppress flow of the thermally-conductive resin toward the resin-amount check portion, and a flow channel configured to be provided between the pool portion and the resin-amount check portion and to serve as a path through which the thermally-conductive resin flowing into the resin-amount check portion from the pool portion travels.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: December 29, 2015
    Assignee: FUJITSU LIMITED
    Inventors: Takahisa Yoshizumi, Naoto Hoshiyama
  • Publication number: 20150295657
    Abstract: A repeater includes: a pressure-tight casing to be arranged on seabed or in sea; and a feedthrough having a plurality of lead sections each configured to connect a circuit housed in the pressure-tight casing with a cable outside the pressure-tight casing, wherein the plurality of lead sections include at least a power wire and an electric signal wire, and at least two of the plurality of lead sections have a difference in length from each other.
    Type: Application
    Filed: March 24, 2015
    Publication date: October 15, 2015
    Applicant: Fujitsu Limited
    Inventors: Naoto Hoshiyama, Takahisa Yoshizumi
  • Publication number: 20150153019
    Abstract: A light pipe includes a plurality of light guide units, and a connection unit that integrally connects the plurality of light guide units, the connection unit including a light interference suppression hole formed between the light guide units adjacent to each other, the light interference suppression hole including at least one surface that satisfies a total reflection condition of light entering the light interference suppression hole from the connection unit.
    Type: Application
    Filed: October 30, 2014
    Publication date: June 4, 2015
    Inventors: Takahisa Yoshizumi, Chiyu Ishizuka
  • Publication number: 20150125123
    Abstract: An optical transmission device includes: a first cage and a second cage provided in parallel on a top surface of a substrate, into which modules connectable to an optical transmission path are inserted, respectively; a first heat sink including: a first main body arranged along surfaces of the first cage and the second cage at the opposite side to the substrate, and a first plate member rising from a bottom surface of the first main body which faces the substrate, and arranged between the first cage and the second cage.
    Type: Application
    Filed: October 27, 2014
    Publication date: May 7, 2015
    Applicant: FUJITSU LIMITED
    Inventors: Takahisa Yoshizumi, Naoto Hoshiyama
  • Publication number: 20150013956
    Abstract: A heat radiation plate includes a depressed portion into which thermally-conductive resin that transfers heat of an electronic component to the heat radiation plate is poured, and a plurality of check portions configured to be provided to the depressed portion and with an upper surface portion and a lower surface portion stepwise at positions lower than an outer edge portion of the depressed portion and higher than a bottom surface portion of the depressed portion so that a liquid level of the thermally-conductive resin is visually checkable, wherein when the thermally-conductive resin is normally filled in the depressed portion, each of the lower surface portions of the plurality of check portions is covered with the thermally-conductive resin and each of the upper surface portions of the plurality of check portions is exposed without being covered with the thermally-conductive resin.
    Type: Application
    Filed: May 23, 2014
    Publication date: January 15, 2015
    Applicant: FUJITSU LIMITED
    Inventors: Takahisa Yoshizumi, Naoto Hoshiyama
  • Publication number: 20140369004
    Abstract: A heat-transfer plate includes a pool portion configured to have a partially-depressed surface and to be loaded with thermally-conductive resin that is in contact with a heating component so as to transfer the heat from the heating component to the heat-transfer plate, a resin-amount check portion configured to have a plurality of depths and to be disposed at a position where the thermally-conductive resin is viewable in a state where the printed circuit board is fixed to the heat-transfer plate, a levee portion configured to be provided between the pool portion and the resin-amount check portion and to suppress flow of the thermally-conductive resin toward the resin-amount check portion, and a flow channel configured to be provided between the pool portion and the resin-amount check portion and to serve as a path through which the thermally-conductive resin flowing into the resin-amount check portion from the pool portion travels.
    Type: Application
    Filed: May 22, 2014
    Publication date: December 18, 2014
    Applicant: FUJITSU LIMITED
    Inventors: Takahisa Yoshizumi, Naoto Hoshiyama
  • Patent number: 8905499
    Abstract: There is provided a slide rail which includes a first rail member, a second rail member provided slidably with respect to the first rail member, the second rail member including a hole portion opening at least on a surface of the second rail member on the side of the first rail member, a lock lever and a rotating shaft provided on the surface of second rail member on the side of the first rail member, the lock lever being provided to be able to rotate about the rotating shaft, the lock lever including a tongue portion, the tongue portion being formed so as to be inserted in the hole portion, and a receiving portion provided on the second rail member and configured to hold the tongue portion of the lock lever from the direction of the first rail member.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: December 9, 2014
    Assignee: Fujitsu Limited
    Inventors: Takahisa Yoshizumi, Kazuhiro Watanabe, Yasuo Iwahashi, Motoshi Hamasaki
  • Publication number: 20130328470
    Abstract: There is provided a slide rail which includes a first rail member, a second rail member provided slidably with respect to the first rail member, the second rail member including a hole portion opening at least on a surface of the second rail member on the side of the first rail member, a lock lever and a rotating shaft provided on the surface of second rail member on the side of the first rail member, the lock lever being provided to be able to rotate about the rotating shaft, the lock lever including a tongue portion, the tongue portion being formed so as to be inserted in the hole portion, and a receiving portion provided on the second rail member and configured to hold the tongue portion of the lock lever from the direction of the first rail member.
    Type: Application
    Filed: June 3, 2013
    Publication date: December 12, 2013
    Inventors: Takahisa YOSHIZUMI, Kazuhiro Watanabe, Yasuo Iwahashi, Motoshi Hamasaki
  • Patent number: 7926987
    Abstract: An electronic apparatus installed outdoors includes a cabinet body having an opening that houses components constituting the electronic apparatus, a lid body that closes the opening, a printed circuit board unit on which electronic components are mounted, and a block made from an opaque material that has a plurality of holes and is disposed between the printed circuit board unit and the lid body. The printed circuit board unit has a plurality of LED's that indicate operating states of the electronic apparatus. The lid body has a window portion covered with a transparent material having a larger area than a region where the LED's are arranged, so that the window faces the region. The block is disposed so that light emission from the plurality of LED's can be observed from the outside of the electronic apparatus through the respective plurality of holes and the window portion.
    Type: Grant
    Filed: December 31, 2007
    Date of Patent: April 19, 2011
    Assignee: Fujitsu Limited
    Inventors: Yasuhisa Kanemaru, Takahisa Yoshizumi, Haruki Hirata, Mitsuru Etou, Makoto Kawakami
  • Patent number: 7896535
    Abstract: A display module includes: a display unit having a display screen for displaying information; a display unit housing including a transparent front cover covering a display screen of the display unit, and a pair of side covers covering both sides of the display unit, wherein the display unit is attached to the display unit housing so as to be detachable; and shafts projecting outwards from the pair of side covers and supported so as to be freely rotatable when fitted in a pair of supporting holes made in a housing provided for an apparatus.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: March 1, 2011
    Assignee: Fujitsu Limited
    Inventors: Takahisa Yoshizumi, Kazunori Omori, Yasuhisa Kanemaru, Tsutomu Takahashi, Hideki Zenitani
  • Publication number: 20090086418
    Abstract: A display module includes: a display unit having a display screen for displaying information; a display unit housing including a transparent front cover covering a display screen of the display unit, and a pair of side covers covering both sides of the display unit, wherein the display unit is attached to the display unit housing so as to be detachable; and shafts projecting outwards from the pair of side covers and supported so as to be freely rotatable when fitted in a pair of supporting holes made in a housing provided for an apparatus.
    Type: Application
    Filed: September 26, 2008
    Publication date: April 2, 2009
    Applicant: FUJITSU LIMITED
    Inventors: Takahisa YOSHIZUMI, Kazunori OMORI, Yasuhisa KANEMARU, Tsutomu TAKAHASHI, Hideki ZENITANI
  • Publication number: 20080192495
    Abstract: An electronic apparatus installed outdoors includes a cabinet body having an opening that houses components constituting the electronic apparatus, a lid body that closes the opening, a printed circuit board unit on which electronic components are mounted, and a block made from an opaque material that has a plurality of holes and is disposed between the printed circuit board unit and the lid body. The printed circuit board unit has a plurality of LED's that indicate operating states of the electronic apparatus. The lid body has a window portion covered with a transparent material having a larger area than a region where the LED's are arranged, so that the window faces the region. The block is disposed so that light emission from the plurality of LED's can be observed from the outside of the electronic apparatus through the respective plurality of holes and the window portion.
    Type: Application
    Filed: December 31, 2007
    Publication date: August 14, 2008
    Applicant: FUJITSU LIMITED
    Inventors: Yasuhisa Kanemaru, Takahisa Yoshizumi, Haruki Hirata, Mitsuru Etou, Makoto Kawakami
  • Patent number: 6496358
    Abstract: The present invention relates to a breaker apparatus and breaker unit. The breaker apparatus comprises a breaker unit including a power supply/cut-off breaker part, a power connecting part, a first unit connecting part, a ground connecting part and a second unit connecting part and further comprises a breaker unit mounting board including a mating power connecting part, a mating ground connecting part, a first connection mediating part and a second connection mediating part. This breaker apparatus is capable of constituting a power distributing apparatus with a necessary but minimized construction, and of extending the breaker unit in a minimum unit according to necessity. In addition, with this breaker apparatus, parts can be used in common irrespective of a change of a ground system, and further, can be replaced in the hot-line condition without cutting off the power supply to a system.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: December 17, 2002
    Assignee: Fujitsu Limited
    Inventors: Yasuhisa Kanemaru, Takahisa Yoshizumi, Kazunori Oomori, Yoshiaki Tobimatsu, Yasunori Murata, Mitsuru Etou
  • Publication number: 20020105399
    Abstract: The present invention relates to a breaker apparatus and breaker unit. The breaker apparatus comprises a breaker unit including a power supply/cut-off breaker part, a power connecting part, a first unit connecting part, a ground connecting part and a second unit connecting part and further comprises a breaker unit mounting board including a mating power connecting part, a mating ground connecting part, a first connection mediating part and a second connection mediating part. This breaker apparatus is capable of constituting a power distributing apparatus with a necessary but minimized construction, and of extending the breaker unit in a minimum unit according to necessity. In addition, with this breaker apparatus, parts can be used in common irrespective of a change of a ground system, and further, can be replaced in the hot-line condition without cutting off the power supply to a system.
    Type: Application
    Filed: December 30, 1998
    Publication date: August 8, 2002
    Inventors: YASUHISA KANEMARU, TAKAHISA YOSHIZUMI, KAZUNORI OOMORI, YOSHIAKI TOBIMATSU, YASUNORI MURATA, MITSURU ETOU