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).
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Patent number: 10868553Abstract: 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: GrantFiled: November 13, 2018Date of Patent: December 15, 2020Inventors: Yasunori Onishi, Takahiro Kan, Mutsuhiko Ota
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Patent number: 10826510Abstract: 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: GrantFiled: December 27, 2019Date of Patent: November 3, 2020Assignee: Seiko Epson CorporationInventors: Kimio Nagasaka, Yukihiro Hashi, Takahiro Kan, Tomohiro Tamura, Teppei Higuchi
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Publication number: 20200212919Abstract: 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: ApplicationFiled: December 27, 2019Publication date: July 2, 2020Inventors: Kimio NAGASAKA, Yukihiro HASHI, Takahiro KAN, Tomohiro TAMURA, Teppei HIGUCHI
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Publication number: 20190149157Abstract: 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: ApplicationFiled: November 13, 2018Publication date: May 16, 2019Inventors: Yasunori ONISHI, Takahiro KAN, Mutsuhiko OTA
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Publication number: 20160225978Abstract: 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: ApplicationFiled: January 26, 2016Publication date: August 4, 2016Inventors: Takahiro Kan, Kenichi Otsuki, Takumi Suzuki, Masayuki Ishikawa, Shigeru Shiraishi, Go Yamashita
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Patent number: 8864187Abstract: 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: GrantFiled: December 23, 2008Date of Patent: October 21, 2014Assignees: Yazaki Corporation, Toyota Auto Body Co., Ltd.Inventors: Norifumi Jitsuishi, Hironori Matsumoto, Takahiro Kan
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Patent number: 8444189Abstract: 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: GrantFiled: November 22, 2007Date of Patent: May 21, 2013Assignees: Yazaki Corporation, Toyota Auto Body Co., Ltd.Inventors: Norifumi Jitsuishi, Hironori Matsumoto, Takahiro Kan, Takashi Adachi, Motomu Imaizumi
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Patent number: 8291734Abstract: 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: GrantFiled: June 9, 2008Date of Patent: October 23, 2012Assignee: Toyota Shatai Kabushiki KaishaInventors: Takahiro Kan, Kazumutsu Azuma
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Patent number: 7753428Abstract: 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: GrantFiled: April 17, 2007Date of Patent: July 13, 2010Assignees: Toyota Jidosha Kabushiki Kaisha, Toyota Shatai Kabushiki Kaisha, Toyota Boshoku Kabushiki KaishaInventors: Hideyuki Kato, Takahiro Sugama, Masami Natsume, Takahiro Kan, Mikihito Muramatsu
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Publication number: 20100133870Abstract: 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: ApplicationFiled: June 9, 2008Publication date: June 3, 2010Applicant: TOYOTA SHATAI KABUSHIKI KAISHAInventors: Takahiro Kan, Kazumutsu Azuma
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Publication number: 20100064588Abstract: 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: ApplicationFiled: November 22, 2007Publication date: March 18, 2010Inventors: Norifumi Jitsuishi, Hironori Matsumoto, Takahiro Kan, Takashi Adachi, Motomu Imaizumi
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Publication number: 20090173006Abstract: 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: ApplicationFiled: December 23, 2008Publication date: July 9, 2009Inventors: Norifumi Jitsuishi, Hironori Matsumoto, Takahiro Kan
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Publication number: 20090102222Abstract: 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: ApplicationFiled: April 17, 2007Publication date: April 23, 2009Inventors: Hideyuki Kato, Takahiro Sugama, Masami Natsume, Takahiro Kan, Mikihito Muramatsu
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Patent number: 5413640Abstract: 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: GrantFiled: March 29, 1993Date of Patent: May 9, 1995Assignee: Kawasaki Steel CorporationInventors: Masahiko Manabe, Kazumi Morita, Yoshinari Muro, Takahiro Kan, Yoshiaki Iida, Hideo Kobayashi, Takashi Obara
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Patent number: 5306353Abstract: 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: GrantFiled: June 17, 1992Date of Patent: April 26, 1994Assignee: Kawasaki Steel CorporationInventors: Yasuyuki Hayakawa, Michiro Komatsubara, Takahiro Kan, Hirotake Ishitobi, Katsuo Iwamoto
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Patent number: 5244511Abstract: 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: GrantFiled: January 19, 1993Date of Patent: September 14, 1993Assignee: Kawasaki Steel CorporationInventors: Michiro Komatsubara, Mitsumasa Kurosawa, Yasuyuki Hayakawa, Takahiro Kan, Toshio Sadayori
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Patent number: 5173128Abstract: 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: GrantFiled: October 28, 1991Date of Patent: December 22, 1992Assignee: Kawasaki Steel CorporationInventors: Michiro Komatsubara, Toshio Sadayori, Katsuo Iwamoto, Yasuyuki Hayakawa, Takahiro Kan
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Patent number: 5139582Abstract: 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: GrantFiled: September 10, 1991Date of Patent: August 18, 1992Assignee: Kawasaki Steel CorporationInventors: Mitsumasa Kurosawa, Michiro Komatsubara, Katsuo Iwamoto, Takahiro Kan, Toshio Sadayori
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Patent number: 5127971Abstract: 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: GrantFiled: February 15, 1991Date of Patent: July 7, 1992Assignee: Kawasaki Steel CorporationInventors: Michiro Komatsubara, Yasuyuki Hayakawa, Mitsumasa Kurosawa, Takahiro Kan, Toshio Sandayori
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Patent number: 4951736Abstract: 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: GrantFiled: July 12, 1989Date of Patent: August 28, 1990Assignee: Kawasaki Steel CorporationInventors: Masao Yukumoto, Michiharu Ozawa, Takahiro Kan