Patents by Inventor Kazumi Kasai

Kazumi Kasai 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: 10582438
    Abstract: A base station apparatus includes a processor, a memory and a communication circuit. The processor is configured to set a waiting period in which a packet from a terminal device to which a connection has not been established is awaited. The memory is configured to store data that is processed by a terminal device to which a connection is established. The communication circuit is configured to, upon receiving a first packet from a communication terminal device in the waiting period, transmit to the communication terminal device a second packet containing the data and information used by the communication terminal device for establishing a connection.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: March 3, 2020
    Assignee: FUJITSU LIMITED
    Inventors: Tatsuya Kikuzuki, Ichirou Ida, Kazumi Kasai, Teruhisa Ninomiya, Eiji Matsumoto, Iwamasa Yuki, Toshihiro Kunitake, Hiroki Akano
  • Patent number: 9867222
    Abstract: A wireless communication system includes a transmission device, a relay device, and a reception device and is configured to execute direct communication of directly transmitting a wireless signal from the transmission device to the reception device without routing through the relay device and indirect communication of indirectly transmitting a wireless signal from the transmission device to the reception device through the relay device. The wireless communication system includes a controller configured to estimate a disconnection continuation time that is a time during which the direct communication is not executable in a case where the direct communication is not executable while the direct communication is repeatedly executed, continue to execute the direct communication when the disconnection continuation time is shorter than a threshold time, and execute the indirect communication when the disconnection continuation time is longer than the threshold time.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: January 9, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Ichirou Ida, Makoto Yoshida, Masafumi Katoh, Teruhisa Ninomiya, Kazumi Kasai, Tatsuya Kikuzuki
  • Patent number: 9755323
    Abstract: An antenna apparatus includes N (2=<N) transmitting antennas configured to transmit RF signals having Orbital Angular Momentum (OAM) of designated modes, and N receiving antennas configured to make N pairs with the N transmitting antennas, respectively, and to receive the RF signals having OAM of the designated modes transmitted from the corresponding N transmitting antennas within the N pairs.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: September 5, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Zhengyi Li, Yoji Ohashi, Kazumi Kasai
  • Publication number: 20170156100
    Abstract: A base station apparatus includes a processor, a memory and a communication circuit. The processor is configured to set a waiting period in which a packet from a terminal device to which a connection has not been established is awaited. The memory is configured to store data that is processed by a terminal device to which a connection is established. The communication circuit is configured to, upon receiving a first packet from a communication terminal device in the waiting period, transmit to the communication terminal device a second packet containing the data and information used by the communication terminal device for establishing a connection.
    Type: Application
    Filed: February 13, 2017
    Publication date: June 1, 2017
    Applicant: FUJllTSU LIM ITED
    Inventors: Tatsuya Kikuzuki, lchirou Ida, Kazumi Kasai, Teruhisa Ninomiya, Eiji Matsumoto, lwamasa Yuki, Toshihiro Kunitake, Hiroki Akano
  • Patent number: 9570811
    Abstract: A device includes a dielectric, wherein a front and a back of the dielectric for reflecting and transmitting an electromagnetic wave are defined by a first surface and a second surface, the first or second surface forming a half mirror, the first surface has a height that changes in spiral as leaving from the second surface, and the second surface has a height that changes in spiral as leaving from the first surface.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: February 14, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Takenori Ohshima, Yoji Ohashi, Yukio Takeda, Kazumi Kasai
  • Patent number: 9560488
    Abstract: A BAN system includes multiple terminal apparatuses connected by wireless communication, where a terminal apparatus of the multiple terminal apparatuses is configured to identify in which direction acceleration has changed, the direction being identified based on a measurement result of a sensor of the terminal apparatus, the sensor being configured to measure acceleration; and to refer to information that specifies corresponding to places where the plurality of terminal apparatuses is to be attached to a body, directions in which acceleration changes when the body performs a given behavior, and determines based on the identified direction, a place where the terminal apparatus is attached to the body.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: January 31, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Toshihiro Kunitake, Hiroki Akano, Yuki Iwamasa, Eiji Matsumoto, Ichirou Ida, Tatsuya Kikuzuki, Kazumi Kasai, Teruhisa Ninomiya
  • Patent number: 9277479
    Abstract: A wireless communication system includes first and second wireless communication apparatuses. The first wireless communication apparatus includes a plurality of communication units that perform communication in different frequency bands. The plurality of communication units transmits the same control signal and data in the different frequency bands to keep allocation of communication slots for the second wireless communication apparatus on a plurality of paths. When detecting a communication failure while connecting to and communicating with one communication unit through one path, the second wireless communication apparatus switches to another communication unit and continues the communication through another path.
    Type: Grant
    Filed: January 20, 2014
    Date of Patent: March 1, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Kaoru Yokoo, Yoji Ohashi, Tatsuya Kikuzuki, Ichirou Ida, Kazumi Kasai
  • Publication number: 20160057582
    Abstract: A BAN system includes multiple terminal apparatuses connected by wireless communication, where a terminal apparatus of the multiple terminal apparatuses is configured to identify in which direction acceleration has changed, the direction being identified based on a measurement result of a sensor of the terminal apparatus, the sensor being configured to measure acceleration; and to refer to information that specifies corresponding to places where the plurality of terminal apparatuses is to be attached to a body, directions in which acceleration changes when the body performs a given behavior, and determines based on the identified direction, a place where the terminal apparatus is attached to the body.
    Type: Application
    Filed: June 26, 2015
    Publication date: February 25, 2016
    Inventors: Toshihiro Kunitake, HIROKI AKANO, Yuki Iwamasa, Eiji Matsumoto, Ichirou Ida, Tatsuya Kikuzuki, Kazumi Kasai, Teruhisa Ninomiya
  • Publication number: 20160028163
    Abstract: An antenna apparatus includes N (2=<N) transmitting antennas configured to transmit RF signals having Orbital Angular Momentum (OAM) of designated modes, and N receiving antennas configured to make N pairs with the N transmitting antennas, respectively, and to receive the RF signals having OAM of the designated modes transmitted from the corresponding N transmitting antennas within the N pairs.
    Type: Application
    Filed: October 1, 2015
    Publication date: January 28, 2016
    Inventors: Zhengyi Li, Yoji Ohashi, Kazumi Kasai
  • Publication number: 20160007401
    Abstract: A wireless communication system includes a transmission device, a relay device, and a reception device and is configured to execute direct communication of directly transmitting a wireless signal from the transmission device to the reception device without routing through the relay device and indirect communication of indirectly transmitting a wireless signal from the transmission device to the reception device through the relay device. The wireless communication system includes a controller configured to estimate a disconnection continuation time that is a time during which the direct communication is not executable in a case where the direct communication is not executable while the direct communication is repeatedly executed, continue to execute the direct communication when the disconnection continuation time is shorter than a threshold time, and execute the indirect communication when the disconnection continuation time is longer than the threshold time.
    Type: Application
    Filed: September 10, 2015
    Publication date: January 7, 2016
    Inventors: Ichirou Ida, Makoto Yoshida, Masafumi Katoh, Teruhisa Ninomiya, Kazumi Kasai, Tatsuya Kikuzuki
  • Publication number: 20150029070
    Abstract: A device includes a dielectric, wherein a front and a back of the dielectric for reflecting and transmitting an electromagnetic wave are defined by a first surface and a second surface, the first or second surface forming a half mirror, the first surface has a height that changes in spiral as leaving from the second surface, and the second surface has a height that changes in spiral as leaving from the first surface.
    Type: Application
    Filed: July 24, 2014
    Publication date: January 29, 2015
    Inventors: Takenori OHSHIMA, Yoji OHASHI, Yukio TAKEDA, Kazumi KASAI
  • Publication number: 20140133290
    Abstract: A wireless communication system includes first and second wireless communication apparatuses. The first wireless communication apparatus includes a plurality of communication units that perform communication in different frequency bands. The plurality of communication units transmits the same control signal and data in the different frequency bands to keep allocation of communication slots for the second wireless communication apparatus on a plurality of paths. When detecting a communication failure while connecting to and communicating with one communication unit through one path, the second wireless communication apparatus switches to another communication unit and continues the communication through another path.
    Type: Application
    Filed: January 20, 2014
    Publication date: May 15, 2014
    Applicant: FUJITSU LIMITED
    Inventors: Kaoru YOKOO, Yoji OHASHI, Tatsuya KIKUZUKI, Ichirou IDA, Kazumi KASAI
  • Patent number: 5070815
    Abstract: A MOCVD apparatus comprises a base, an outer vessel extending upward from the base to form a closed space between the base and the outer vessel, an inner vessel provided in the space such that the inner vessel extends upward from the base in correspondence to the outer vessel to form a closed second space and forming a reaction chamber between the outer vessel and the inner vessel, a gas inlet formed at an upper end of the outer vessel for introducing a source gas into the reaction chamber, a gas outlet formed at the base in correspondence to the reaction chamber for evacuating the reaction chamber, the outer vessel and inner vessel being configured to induce a directional flow of gas in the reaction chamber from the gas inlet to the base, a susceptor provided on the inner vessel to extend generally parallel to the directional flow of the gas for supporting a substrate thereon, a plurality of ring-shaped lamps provided in the second space with a substantially concentric relationship with each other such that
    Type: Grant
    Filed: March 12, 1991
    Date of Patent: December 10, 1991
    Assignee: Fujitsu Limited
    Inventors: Kazumi Kasai, Hiromi Itoh, Hitoshi Tanaka, Nobuaki Tomesakai
  • Patent number: 5033171
    Abstract: A buckle (10) comprises a plug (11) and a socket (12) releasably engageable with the plug (11). The socket (12) includes a socket body (21) having an opening (28) formed in its front end, and a pair of catch plates (22, 22) pivotally mounted at their respective middles on the opposite sides of the socket body (21) and each having at its front end an engaging prong (37, 37) and its rear end an abutment (38, 38). The plug (11) includes a plug proper (14) having a shank (14'), a plug head (16) formed contiguously to the front end of the shank (14') and having on its opposed sides a pair of engaging shoulders (17, 17) and means (19a, 19b) provided on the front end of the plug head (16) for, when the plug proper (14) is fully forced into the socket body (21), urging the abutments (38, 38) outwardly apart from each other so that the catch plates (22, 22) rotate in the direction to bring their engaging prongs (37, 37) into catching engagement with the engaging shoulders (17, 17) of the plug proper (14).
    Type: Grant
    Filed: April 2, 1990
    Date of Patent: July 23, 1991
    Assignee: Yoshida Kogyo K.K.
    Inventor: Kazumi Kasai
  • Patent number: 4999886
    Abstract: A low-profile buckle includes a flat one-piece socket member molded of synthetic resin and including a top plate having a resilient locking wing engageable with locking feet of a pair of flat legs of a planar plug member to interlock the plug and socket members, and a back plate having a resilient presser flap adapted to be manually depressed to urge the resilient locking wing to resiliently flex out of engagement with the locking feet to disengage the plug and socket members.
    Type: Grant
    Filed: December 18, 1989
    Date of Patent: March 19, 1991
    Assignee: Yoshida Kogyo K. K.
    Inventor: Kazumi Kasai
  • Patent number: 4987661
    Abstract: A buckle comprising a male member and a female member releasably engageable therewith, the female member including a pair of resilient arms serving as a release lever and a pair of inwardly directed flanges. The resilient arms each have a stop finger normally spaced apart from but abuttingly engageable with the flange when lateral pull is exerted upon the release lever.
    Type: Grant
    Filed: May 10, 1990
    Date of Patent: January 29, 1991
    Assignee: Yoshida Kogyo K.K.
    Inventor: Kazumi Kasai
  • Patent number: 4982480
    Abstract: A pair of snappingly engageable members of identical shape each comprising a base having a pair of male snap legs disposed on one surface thereof in spaced confronting relation to each other, the male snap legs having bulging portions, respectively, projecting laterally away from each other, and a pair of female snap legs disposed on said one surface in spaced confronting relation to each other, the female snap legs having a pair of locking portions, respectively, projecting laterally toward each other, the bulging portions and the locking portions having longitudinal ends confronting each other. When the snappingly engageable members are put together, the male snap legs on the base of one of the snappingly engageable members snappingly engage the female snap legs on the base of the other snappingly engageable member, and the female snap legs on the base of said one snappingly engageable member snappingly engage the male snap legs on the base of the other snappingly engageable member.
    Type: Grant
    Filed: January 3, 1990
    Date of Patent: January 8, 1991
    Assignee: Yoshida Kogyo, K.K.
    Inventor: Kazumi Kasai
  • Patent number: 4945614
    Abstract: A buckle includes a base consisting of a base plate having an open hole formed therein on the longitudinal one end side thereof and opposite guide grooves formed therein on both sides thereof, a socket consisting of a plate-shaped body having a projection with an aperture formed integrally therewith on an opposite end to a belt connecting portion thereof, the projection being fitted in the hole formed in the base plate, and a plug consisting of a plate-shaped base body adapted to be slidably moved along the guide grooves of the base and having resilient pieces formed one end thereof and engaged with the aperture of the socket in snap-fit fashion and disengaged therefrom, wherein the resistance to sliding of the plug on the base becomes large when the resilient pieces of the plug are located out of the hole formed in the base plate.
    Type: Grant
    Filed: June 28, 1989
    Date of Patent: August 7, 1990
    Assignee: Yoshida Kogyo K.K.
    Inventor: Kazumi Kasai
  • Patent number: 4928365
    Abstract: A buckle includes a male member having a tongue-shaped presser having on its lower side a pair of engaging legs and a female member including in its upper side an aperture for insertion of the engaging legs, and a pair of transversely spaced resilient arms adapted for angular movement around their proximal ends against their own resiliency, the arms having on their middles engaging means for engagement with the engaging legs when the engaging legs are forced through an aperture. Uncoupling means are rotatably mounted on the upper side of the female member and so operatively linked with the free ends of the resilient arms that the rotation of the uncoupling means causes the resilient arms angularly move against their own resiliency, thereby bringing the engaging means out of engagement with the engaging legs.
    Type: Grant
    Filed: June 23, 1989
    Date of Patent: May 29, 1990
    Assignee: Yoshida Kogyo K. K.
    Inventor: Kazumi Kasai
  • Patent number: D320178
    Type: Grant
    Filed: October 12, 1989
    Date of Patent: September 24, 1991
    Assignee: Yoshida Kogyo K.K.
    Inventor: Kazumi Kasai