Patents by Inventor Takahiro Kan

Takahiro Kan 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: 10868553
    Abstract: An atomic oscillator includes an atom cell that accommodates an alkali metal atom, a heating device that heats the atom cell, a container that includes a first magnetism shielding member that is disposed between the heating device and the atom cell and a second magnetism shielding member that is disposed on the side opposite the atom cell with respect to the heating device to shield the atom cell from magnetism produced by the heating device, and a thermally insulating member disposed between the first member and the second member.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: December 15, 2020
    Inventors: Yasunori Onishi, Takahiro Kan, Mutsuhiko Ota
  • Patent number: 10826510
    Abstract: An atomic oscillator includes: a light-emitting element; an atom cell that includes a first surface on which light beams from the light-emitting element are incident and a second surface from which the light beams incident on the first surface are emitted and accommodates alkali metal atoms in a gas state; a shield that accommodates the atom cell and has a magnetic shielding property, the shield having an opening; a heat transfer member that is in contact with a portion of the atom cell via an opening of the shield and has a thermal conductivity higher than a thermal conductivity of the atom cell; a temperature control element that is in contact with the heat transfer member and controls a temperature of the atom cell; and a light-receiving element that receives the light beams emitted from the second surface.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: November 3, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Kimio Nagasaka, Yukihiro Hashi, Takahiro Kan, Tomohiro Tamura, Teppei Higuchi
  • Publication number: 20200212919
    Abstract: An atomic oscillator includes: a light-emitting element; an atom cell that includes a first surface on which light beams from the light-emitting element are incident and a second surface from which the light beams incident on the first surface are emitted and accommodates alkali metal atoms in a gas state; a shield that accommodates the atom cell and has a magnetic shielding property, the shield having an opening; a heat transfer member that is in contact with a portion of the atom cell via an opening of the shield and has a thermal conductivity higher than a thermal conductivity of the atom cell; a temperature control element that is in contact with the heat transfer member and controls a temperature of the atom cell; and a light-receiving element that receives the light beams emitted from the second surface.
    Type: Application
    Filed: December 27, 2019
    Publication date: July 2, 2020
    Inventors: Kimio NAGASAKA, Yukihiro HASHI, Takahiro KAN, Tomohiro TAMURA, Teppei HIGUCHI
  • Publication number: 20190149157
    Abstract: An atomic oscillator includes an atom cell that accommodates an alkali metal atom, a heating device that heats the atom cell, a container that includes a first magnetism shielding member that is disposed between the heating device and the atom cell and a second magnetism shielding member that is disposed on the side opposite the atom cell with respect to the heating device to shield the atom cell from magnetism produced by the heating device, and a thermally insulating member disposed between the first member and the second member.
    Type: Application
    Filed: November 13, 2018
    Publication date: May 16, 2019
    Inventors: Yasunori ONISHI, Takahiro KAN, Mutsuhiko OTA
  • Publication number: 20160225978
    Abstract: A method of manufacturing a vibration device includes a process of strongly exciting a vibrator element by applying power, which is higher than drive power during use of the vibrator element, to the vibrator element, and a process of adjusting a frequency of the vibrator element after the process of strongly exciting the vibrator element.
    Type: Application
    Filed: January 26, 2016
    Publication date: August 4, 2016
    Inventors: Takahiro Kan, Kenichi Otsuki, Takumi Suzuki, Masayuki Ishikawa, Shigeru Shiraishi, Go Yamashita
  • Patent number: 8864187
    Abstract: The invention provides a vehicle door opening and closing system for making a notice before opening and closing a door by using a motor to enhance the safety. The inventive is a door opening and closing system mounted on a vehicle including a controller generating and sending a first instruction and a second instruction, a motor controlled by the controller so as to open or close the door and an announce mechanism controlled by the controller. The first instruction instructs the motor to drive after a predetermined wait time from the generation of the first instruction; and the second instruction instructs the announce mechanism to announce generation of the first instruction for a predetermined notice time before starting to drive the motor.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: October 21, 2014
    Assignees: Yazaki Corporation, Toyota Auto Body Co., Ltd.
    Inventors: Norifumi Jitsuishi, Hironori Matsumoto, Takahiro Kan
  • Patent number: 8444189
    Abstract: A door open/close system for a vehicle includes: a plurality of door open/close devices 11, 11? having a latch mechanism 14 including a latch 13 for engaging with an engaging member 12, a motor 16a (16a?) for driving the latch mechanism 14, and a latch state detecting member 21 (21?); and a control member 4 for starting to drive the motor of any one of all the door open/close device when the latch state detecting member of the one door open/close devices detects that the latch mechanism is in the half-latch state, said control member driving synchronously the motors of all the door open/close devices except the one door open/close device to change the latch mechanisms from the half-latch state to the full-latch state when the latch state detecting members of all the door open/close devices except the one door open/close device detect that the latch mechanisms are in the half-latch state in a case that the door of the vehicle is changed from a fully opened state to a fully closed state.
    Type: Grant
    Filed: November 22, 2007
    Date of Patent: May 21, 2013
    Assignees: Yazaki Corporation, Toyota Auto Body Co., Ltd.
    Inventors: Norifumi Jitsuishi, Hironori Matsumoto, Takahiro Kan, Takashi Adachi, Motomu Imaizumi
  • Patent number: 8291734
    Abstract: A stowable vehicle seat, which is stowed by folding a seat back toward the side of a seat cushion, releasing a floor lock while the seat back is in a superposed state on the seat cushion, and lifting the vehicle seat up toward the vehicle body side. The vehicle seat is fixed by connecting a striker disposed on the back face of the seat back with a dragger unit disposed on the vehicle body side. After an operation to release locking of the dragger unit, separation of the striker from the dragger unit is estimated, and a dragger motor is driven so that a latch of the dragger unit is moved to the initial position.
    Type: Grant
    Filed: June 9, 2008
    Date of Patent: October 23, 2012
    Assignee: Toyota Shatai Kabushiki Kaisha
    Inventors: Takahiro Kan, Kazumutsu Azuma
  • Patent number: 7753428
    Abstract: Disclosed is a vehicle seat device operating as follows. A retracting instruction is given by a seat switch to start operation of a seat back actuator. Lock of the seat back and a seat cushion is released to rotate the seat back to the position where it is overlapped with the seat cushion. A floor actuator is driven to release engagement between the floor panel and the floor lock. A lift up motor is operated to lift up the vehicle seat device toward the vehicle body. After this, a dragger lock motor is operated to lock a striker on the seat back rear surface and the dragger unit, thereby completing the retraction operation.
    Type: Grant
    Filed: April 17, 2007
    Date of Patent: July 13, 2010
    Assignees: Toyota Jidosha Kabushiki Kaisha, Toyota Shatai Kabushiki Kaisha, Toyota Boshoku Kabushiki Kaisha
    Inventors: Hideyuki Kato, Takahiro Sugama, Masami Natsume, Takahiro Kan, Mikihito Muramatsu
  • Publication number: 20100133870
    Abstract: A stowable vehicle seat, which is stowed by folding a seat back toward the side of a seat cushion, releasing a floor lock while the seat back is in a superposed state on the seat cushion, and lifting the vehicle seat up toward the vehicle body side. The vehicle seat is fixed by connecting a striker disposed on the back face of the seat back with a dragger unit disposed on the vehicle body side. After an operation to release locking of the dragger unit, separation of the striker from the dragger unit is estimated, and a dragger motor is driven so that a latch of the dragger unit is moved to the initial position.
    Type: Application
    Filed: June 9, 2008
    Publication date: June 3, 2010
    Applicant: TOYOTA SHATAI KABUSHIKI KAISHA
    Inventors: Takahiro Kan, Kazumutsu Azuma
  • Publication number: 20100064588
    Abstract: A door open/close system for a vehicle includes: a plurality of door open/close devices 11, 11? having a latch mechanism 14 including a latch 13 for engaging with an engaging member 12, a motor 16a (16a?) for driving the latch mechanism 14, and a latch state detecting member 21 (21?); and a control member 4 for starting to drive the motor of any one of all the door open/close device when the latch state detecting member of the one door open/close devices detects that the latch mechanism is in the half-latch state, said control member driving synchronously the motors of all the door open/close devices except the one door open/close device to change the latch mechanisms from the half-latch state to the full-latch state when the latch state detecting members of all the door open/close devices except the one door open/close device detect that the latch mechanisms are in the half-latch state in a case that the door of the vehicle is changed from a fully opened state to a fully closed state.
    Type: Application
    Filed: November 22, 2007
    Publication date: March 18, 2010
    Inventors: Norifumi Jitsuishi, Hironori Matsumoto, Takahiro Kan, Takashi Adachi, Motomu Imaizumi
  • Publication number: 20090173006
    Abstract: The invention provides a vehicle door opening and closing system for making a notice before opening and closing a door by using a motor to enhance the safety. The inventive is a door opening and closing system mounted on a vehicle including a controller generating and sending a first instruction and a second instruction, a motor controlled by the controller so as to open or close the door and an announce mechanism controlled by the controller. The first instruction instructs the motor to drive after a predetermined wait time from the generation of the first instruction; and the second instruction instructs the announce mechanism to announce generation of the first instruction for a predetermined notice time before starting to drive the motor.
    Type: Application
    Filed: December 23, 2008
    Publication date: July 9, 2009
    Inventors: Norifumi Jitsuishi, Hironori Matsumoto, Takahiro Kan
  • Publication number: 20090102222
    Abstract: Disclosed is a vehicle seat device operating as follows. A retracting instruction is given by a seat switch to start operation of a seat back actuator. Lock of the seat back and a seat cushion is released to rotate the seat back to the position where it is overlapped with the seat cushion. A floor actuator is driven to release engagement between the floor panel and the floor lock. A lift up motor is operated to lift up the vehicle seat device toward the vehicle body. After this, a dragger lock motor is operated to lock a striker on the seat back rear surface and the dragger unit, thereby completing the retraction operation.
    Type: Application
    Filed: April 17, 2007
    Publication date: April 23, 2009
    Inventors: Hideyuki Kato, Takahiro Sugama, Masami Natsume, Takahiro Kan, Mikihito Muramatsu
  • Patent number: 5413640
    Abstract: A method of producing a non-oriented electromagnetic steel strip by subjecting a low-carbon steel slab to hot-rolling, cold rolling at a small reduction and first annealing. In order to improve magnetic flux density and surface appearance of the product, specific conditions are employed so as to coarsen the crystalline structure to obtain a controlled and moderate crystal grain size after the annealing. The slab is cold-rolled at a rolling reduction of about 5 to 15% and is subjected to first annealing by heating at a rate of about 3.degree. C./sec or higher and holding the strip for about 5 to 30 seconds at 850.degree. C. to the A.sub.3 transformation temperature of the steel, while controlling the crystal grain size to about 100 to 200 .mu.m after first annealing.
    Type: Grant
    Filed: March 29, 1993
    Date of Patent: May 9, 1995
    Assignee: Kawasaki Steel Corporation
    Inventors: Masahiko Manabe, Kazumi Morita, Yoshinari Muro, Takahiro Kan, Yoshiaki Iida, Hideo Kobayashi, Takashi Obara
  • Patent number: 5306353
    Abstract: In grain oriented silicon steel sheets containing MnSe as a main inhibitor, an iron loss is reduced by increasing the magnetic flux density and realizing the thinning of product thickness and fine division of crystal grains while utilizing the stability of secondary recrystallization as a merit of such a sheet. In this case, 0.02-0.30% of Cu is added to a slab of the above grain oriented silicon steel, and particularly the decarburization annealing and/or the final finish annealing are carried out under particular conditions.
    Type: Grant
    Filed: June 17, 1992
    Date of Patent: April 26, 1994
    Assignee: Kawasaki Steel Corporation
    Inventors: Yasuyuki Hayakawa, Michiro Komatsubara, Takahiro Kan, Hirotake Ishitobi, Katsuo Iwamoto
  • Patent number: 5244511
    Abstract: A method of manufacturing an oriented silicon steel sheet which achieves a high magnetic flux density while reducing the core loss. A silicon steel sheet containing Al and Sb as inhibitor components is cold-rolled once or a plurality of times. During cooling for annealing before final cold rolling, a small strain is created on the sheet and the temperature is within a certain range. Carbide precipitation is suitably controlled to precipitate carbides comparatively coarsely in grains.
    Type: Grant
    Filed: January 19, 1993
    Date of Patent: September 14, 1993
    Assignee: Kawasaki Steel Corporation
    Inventors: Michiro Komatsubara, Mitsumasa Kurosawa, Yasuyuki Hayakawa, Takahiro Kan, Toshio Sadayori
  • Patent number: 5173128
    Abstract: An oriented silicon steel sheet having a very high magnetic flux density is produced from an oriented silicon steel containing AlN as the main inhibitor and also containing Sb by a method adapted to prevent the loss of the inhibiting ability of the surface layer of the steel, and to improve cooling conditions in annealing before the final cold rolling. The steel is hot rolled, subjected to at least one time the combination of annealing and cold rolling wherein the final cold rolling is performed with a rolling reduction of about 80 to 95%, subjected to decarburization and primary recrystallization annealing, and subjected to, after coating an annealing separation agent, final finish annealing. Before annealing is performed before the final cold rolling, a nitriding promoter is applied to the surface of the steel sheet, and the partial-pressure ratio of N.sub.2 in the atmosphere for that annealing is adjusted to a value of not less than about 20%.
    Type: Grant
    Filed: October 28, 1991
    Date of Patent: December 22, 1992
    Assignee: Kawasaki Steel Corporation
    Inventors: Michiro Komatsubara, Toshio Sadayori, Katsuo Iwamoto, Yasuyuki Hayakawa, Takahiro Kan
  • Patent number: 5139582
    Abstract: A method of manufacturing an oriented silicon steel sheet improved in magnetic characteristics, in which a hot-rolled steel sheet of oriented silicon steel containing about 0.01 to 0.10% by weight of Al and about 0.01 to 0.04% by weight of Sb as inhibitor components is heat-treated and cold-rolled one time or two or more times to have a final thickness. In the final heat treatment and final cold rolling alone, the steel sheet is quenched from a temperature of about 900.degree. to 1,100.degree. C. to a temperature equal to or lower than about 50.degree. C., is heat-treated at about 50.degree. to 150.degree. C. for about 30 sec. to 30 min. while applying a tensile stress of about 0.5 to 20 kg/mm.sup.2, is thereafter cold-rolled by a reduction rate of about 35 to 70% in a tandem rolling method, is aged at about 200.degree. to 400.degree. C. for about 10 sec. to 10 min., and is finished by cold rolling to have the final thickness.
    Type: Grant
    Filed: September 10, 1991
    Date of Patent: August 18, 1992
    Assignee: Kawasaki Steel Corporation
    Inventors: Mitsumasa Kurosawa, Michiro Komatsubara, Katsuo Iwamoto, Takahiro Kan, Toshio Sadayori
  • Patent number: 5127971
    Abstract: The production of grain oriented silicon steel sheets comprises a combination of hot rolling step, cold rolling step, decarburization and primary recrystallization annealing step, annealing separator applying step and secondary recrystallization annealing and purification annealing step. In this case, the cold rolled sheet is subjected to an electrolytic degreasing in a silicate bath containing an iron concentration of 50-5000 mg/l, and Cu is adhered to the surface(s) of the sheet after the decarburization and primary recrystallization annealing in an amount of 400-2000 mg/m.sup.2 per one-side surface.
    Type: Grant
    Filed: February 15, 1991
    Date of Patent: July 7, 1992
    Assignee: Kawasaki Steel Corporation
    Inventors: Michiro Komatsubara, Yasuyuki Hayakawa, Mitsumasa Kurosawa, Takahiro Kan, Toshio Sandayori
  • Patent number: 4951736
    Abstract: A cooling roll for producing quenched thin metal tape from molten metal by the twin-roll method. The roll is made of copper or copper alloy, and the roll surface is covered with a first layer of nickel plating 0.2 to 0.6 mm thick and a second layer of chromium plating 0.02 to 0.05 mm thick. The roll has the surface which does not suffer from deformation, seizure, winding, roughening, wear, and cracking. Thus the roll can produce quenched thin metal tape with a smooth surface in a stable manner for a long time.
    Type: Grant
    Filed: July 12, 1989
    Date of Patent: August 28, 1990
    Assignee: Kawasaki Steel Corporation
    Inventors: Masao Yukumoto, Michiharu Ozawa, Takahiro Kan