Patents by Inventor Takuya Kagawa
Takuya Kagawa 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: 11979440Abstract: A text data transmission-reception system includes a plurality of user terminals; a shared terminal; and an information processing apparatus connectable to each of the plurality of user terminals and the shared terminal via a network. The information processing apparatus includes circuitry configured to receive text data transmitted and received between the plurality of user terminals; determine whether or not the text data transmitted and received between the plurality of user terminals includes a request for controlling the shared terminal; and control the shared terminal based on a determination that the text data includes the request for controlling the shared terminal.Type: GrantFiled: April 28, 2022Date of Patent: May 7, 2024Assignee: Ricoh Company, Ltd.Inventors: Ryo Iwasaki, Takuya Imai, Takuro Mano, Masaaki Kagawa, Hiromasa Koike, Seiya Koura
-
Publication number: 20240093751Abstract: Provided is a bumper cap to be attached to a shock absorber main body, and includes a cover part having an opening at one end, having a bottom part and a through hole penetrating the bottom part at another end, and configured to cover the shock absorber main body, and a plurality of protruding parts protruding from the bottom part of the cover part toward the opening side, and in which a gap is formed between the adjacent protruding parts, in which a suppression part configured to suppress a rotation of a fluid, which has flowed into a space between the inside of the cover part and the shock absorber main body from an outside of the cover part through the through hole, in the cover part is further provided.Type: ApplicationFiled: February 18, 2022Publication date: March 21, 2024Inventors: Takuya HAKOISHI, Shinichi KAGAWA, Eiichi KOMORI
-
Publication number: 20240059047Abstract: A molded body, comprising a foamed portion in which a skin layer A, a foamed layer and a skin layer B are disposed in this order in a thickness direction, wherein in the foamed portion, the foamed layer has a ratio of thickness, with respect to a total thickness of the skin layer A, the foamed layer and the skin layer B, of from 73% to 88%.Type: ApplicationFiled: December 21, 2021Publication date: February 22, 2024Applicant: RESONAC CORPORATIONInventors: Akihiro HATAYAMA, Shigeya NAKAMURA, Kyoichi TOMITA, Takuya KAGAWA
-
Publication number: 20220285684Abstract: A negative electrode material for a lithium ion secondary battery includes particles in a state in which a plurality of flat graphite particles are aggregated or bonded, and in the negative electrode material, with respect to a volume-based particle diameter measured by a laser diffraction/scattering method, a cumulative value at 9.516 ?m is 8.0% or less, a standard deviation of a particle size distribution is 0.22 or less, and a specific surface area is 3.0 m2/g or less.Type: ApplicationFiled: July 31, 2019Publication date: September 8, 2022Inventors: Takayuki MIYAUCHI, Takeshi SATO, Yusuke IKEDA, Takuya KAGAWA
-
Patent number: 10536029Abstract: A power conversion system includes a power conversion device, a connector, and a processing module. The power conversion device is connected to a power system. The attached state and the unattached state of the connector relative to a connecting port that is provided in an apparatus having a battery mounted therein can be selected. The processing module is configured to determine that a malfunction has occurred when a voltage is applied to a portion that electrically connects the connector and the connecting port in a period in which transmission of electric power with respect to the battery is stopped.Type: GrantFiled: April 23, 2014Date of Patent: January 14, 2020Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Hideki Tamura, Takuya Kagawa, Kazunori Kidera
-
Patent number: 9647399Abstract: Connector for electrical connection includes coupler, cable, switch mechanism, failure detector and transmitter. Coupler is removably inserted in and connected to reception side connector provided in machine which is equipped with storage battery. Cable includes two or more electric wires including power line configured to be electrically connected to reception side connector via coupler. Cable is connected to device that performs at least one of supplying power to machine and receiving power from machine. Switch mechanism opens and closes electrical circuit between coupler and power line. Failure detector detects occurrence of failure of coupler. Transmitter transmits detection result of failure detector to device through at least one first electric wire of the two or more electric wires. Switch mechanism opens and closes the electrical circuit in accordance with control signal transmitted through first electric wire.Type: GrantFiled: February 19, 2014Date of Patent: May 9, 2017Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Takuya Kagawa, Hideki Tamura, Kazunori Kidera
-
Publication number: 20160072341Abstract: A power conversion system includes a power conversion device, a connector, and a processing module. The power conversion device is connected to a power system. The attached state and the unattached state of the connector relative to a connecting port that is provided in an apparatus having a battery mounted therein can be selected. The processing module is configured to determine that a malfunction has occurred when a voltage is applied to a portion that electrically connects the connector and the connecting port in a period in which transmission of electric power with respect to the battery is stopped.Type: ApplicationFiled: April 23, 2014Publication date: March 10, 2016Inventors: Hideki TAMURA, Takuya KAGAWA, Kazunori KIDERA
-
Publication number: 20160056589Abstract: Connector for electrical connection includes coupler, cable, switch mechanism, failure detector and transmitter. Coupler is removably inserted in and connected to reception side connector provided in machine which is equipped with storage battery. Cable includes two or more electric wires including power line configured to be electrically connected to reception side connector via coupler. Cable is connected to device that performs at least one of supplying power to machine and receiving power from machine. Switch mechanism opens and closes electrical circuit between coupler and power line. Failure detector detects occurrence of failure of coupler. Transmitter transmits detection result of failure detector to device through at least one first electric wire of the two or more electric wires. Switch mechanism opens and closes the electrical circuit in accordance with control signal transmitted through first electric wire.Type: ApplicationFiled: February 19, 2014Publication date: February 25, 2016Inventors: Takuya KAGAWA, Hideki TAMURA, Kazunori KIDERA
-
Patent number: 9236764Abstract: A DC power supply system includes a DC power supply and a secondary battery for backing up the DC power supply. When a voltage of the DC power supply is lower than a voltage of the secondary battery, the DC power system adds an extra voltage to the voltage of the DC power supply to provide an input voltage to the secondary battery higher than the voltage of the secondary battery by using an electric power of the secondary battery, and the secondary battery is charged.Type: GrantFiled: September 8, 2011Date of Patent: January 12, 2016Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Kazunori Kidera, Takuya Kagawa, Hideki Tamura, Hiroyuki Nishino, Mariko Nishi
-
Patent number: 9190847Abstract: A power distribution system includes a DC-DC converter which outputs a DC power after converting the DC power outputted from a DC power source to a desired voltage level. In the power distribution system, the DC-DC converter is controlled so as to operate only when the input voltage falls in a predetermined range.Type: GrantFiled: September 28, 2010Date of Patent: November 17, 2015Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Hideki Tamura, Takuya Kagawa, Hiroaki Koshin
-
Patent number: 9187002Abstract: A connector main body of a connector accommodates a contact unit, a power cut-off unit that has an electric conductor unit, and open and close a power feeding path between an electrically driven vehicle and an electric power apparatus by bringing into contact or opening electric conductor unit, and an abnormality detection unit that detects an abnormality that occurs on power feeding path, or receives an abnormality signal from outside, an abnormality transmission unit that, when abnormality detection unit detects abnormality or receives abnormality signal, mechanically opens electric conductor unit, and a handle that mechanically brings into contact or opens electric conductor unit in a state in which abnormality detection unit does not detect abnormality and does not receive abnormality signal. Abnormality detection unit detects at least one of a short-circuit current and an overload current that occur on power feeding path as abnormality.Type: GrantFiled: September 18, 2013Date of Patent: November 17, 2015Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Takuya Kagawa, Tetsuji Shibata, Jun Goda, Haeree Lee
-
Patent number: 9160167Abstract: A power supply device includes a fuel-cell power device which supplies a direct current (DC) power to one or more load devices using fuel cells as an input source; and a control unit which controls an output from the fuel-cell power device. In the power supply device, when a load current supplied to the load device is changed, an output characteristic of the fuel-cell power device is shifted so that a rate of change in an output current of the fuel-cell power device becomes lower than a preset value. With the power supply device, even though the fuel-cell is used as a power source, a DC power supplied to the load devices can be gradually changed and therefore reduce environmental load.Type: GrantFiled: August 26, 2010Date of Patent: October 13, 2015Assignee: PANASONIC CORPORATIONInventors: Hiroaki Koshin, Takuya Kagawa
-
Patent number: 9142958Abstract: The power supply apparatus includes a first power device, a second power unit, and controlling means. Each of the first power device and the second power unit supplies DC power to a DC supply line. The first power device makes constant voltage control. The second power unit includes a second power device configured to make inclination control of monotonically decreasing its output voltage with an increase of its output current, and of monotonically increasing its output voltage with a decrease of its output current. Upon acknowledging that a measurement (a magnitude of a current flowing through the DC supply line) exceeds an optimal current magnitude (a magnitude of a current supplied to the DC supply line from the first power device operating at maximum conversion efficiency), the controlling means outputs an instruction such that a magnitude of a current supplied to the DC supply line from the second power unit is identical to a difference between the measurement and the optimal current magnitude.Type: GrantFiled: June 23, 2010Date of Patent: September 22, 2015Assignee: Panasonic CorporationInventors: Hiroaki Koshin, Takuya Kagawa
-
Publication number: 20150263549Abstract: This connector for electrical connection for electrically driven vehicle includes: a contact portion configured to electrically connect an electric cable, electrically connected with one of an electrically driven vehicle or a power apparatus, with the other; and a main body. Main body houses therein the contact portion, a power cutoff portion and a first abnormality detector. Power cutoff portion is configured to switch opening/closing of a feed line between the electrically driven vehicle and the power apparatus. First abnormality detector is configured to detect an abnormality that occurs in the feed line, or externally receive an abnormal signal. Power cutoff portion is configured to open the feed line, when first abnormality detector detects the abnormality or receives the abnormal signal. First abnormality detector is configured to detect, as the abnormality, at least one of a short-circuit current in the feed line or an overload current in the feed line.Type: ApplicationFiled: September 19, 2013Publication date: September 17, 2015Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Haeree Lee, Takuya Kagawa, Tetsuji Shibata, Jun Goda
-
Publication number: 20150160271Abstract: A current detection device includes: a core to be disposed in the vicinity of a conductor as a detection target; a winding wound around the core; an excitation unit configured to apply an excitation signal, having a magnitude and a direction that change at a constant period, to the winding; a magnetic flux detection unit (comparator and averaging circuit) configured to detect a magnetic flux generated in the core due to current flowing through the conductor; and an adder unit configured to add a feedback signal to the excitation signal such that the magnetic flux detected by the magnetic flux detection unit is cancelled.Type: ApplicationFiled: June 26, 2013Publication date: June 11, 2015Inventors: Hiroshi Yoshida, Masataka Kanda, Takuya Kagawa, Kenji Okada, Atsushi Nakamura
-
Patent number: 8922060Abstract: The power supply apparatus a main power device, an auxiliary power unit, and controlling means. Each of the main power device and the auxiliary power unit is configured to supply DC power to a DC supply line. The main power device is configured to generate DC power by use of power supplied from a secondary cell. The controlling means is configured to, when a measurement (a magnitude of a current flowing through the DC supply line) exceeds an optimal current magnitude, send an instruction to the main power device such that a current supplied from the main power device to the DC supply line has the same magnitude as the optimal current magnitude.Type: GrantFiled: June 23, 2010Date of Patent: December 30, 2014Assignee: Panasonic CorporationInventors: Hiroaki Koshin, Takuya Kagawa
-
Publication number: 20140091759Abstract: A connector main body of a connector accommodates a contact unit, a power cut-off unit that has an electric conductor unit, and open and close a power feeding path between an electrically driven vehicle and an electric power apparatus by bringing into contact or opening electric conductor unit, and an abnormality detection unit that detects an abnormality that occurs on power feeding path, or receives an abnormality signal from outside, an abnormality transmission unit that, when abnormality detection unit detects abnormality or receives abnormality signal, mechanically opens electric conductor unit, and a handle that mechanically brings into contact or opens electric conductor unit in a state in which abnormality detection unit does not detect abnormality and does not receive abnormality signal. Abnormality detection unit detects at least one of a short-circuit current and an overload current that occur on power feeding path as abnormality.Type: ApplicationFiled: September 18, 2013Publication date: April 3, 2014Applicant: PANASONIC CORPORATIONInventors: Takuya KAGAWA, Tetsuji SHIBATA, Jun GODA, Haeree LEE
-
Patent number: 8570133Abstract: A transformer includes: a core assembly 1 composed of a pair of E-shaped cores 11, 12 each having two side leg portions 1a, 1b and a central leg portion 1c therebetween, end surfaces of the central leg portions 1c and end surfaces of the side leg portions 1a, 1b of the E-shaped cores 11, 12 oppose each other, respectively, and a gap G is provided between at least the end surfaces of the central leg portions 1c; a primary coil N1 formed by winding round wire around a perimeter of the central leg portion 1c; and a secondary coil N2 formed by winding rectangular wire around a perimeter of the central leg portion 1c by edgewise winding, wherein a space for reducing leakage flux from the gap G that acts on the secondary coil N2 is provided between the secondary coil N2 and the gap G.Type: GrantFiled: March 25, 2010Date of Patent: October 29, 2013Assignee: Panasonic CorporationInventors: Yasuhiro Matsuda, Hideki Tamura, Takuya Kagawa, Tomohiro Ota
-
Publication number: 20130140901Abstract: A DC power supply system includes a DC power supply and a secondary battery for backing up the DC power supply. When a voltage of the DC power supply is lower than a voltage of the secondary battery, the DC power system adds an extra voltage to the voltage of the DC power supply to provide an input voltage to the secondary battery higher than the voltage of the secondary battery by using an electric power of the secondary battery, and the secondary battery is charged.Type: ApplicationFiled: September 8, 2011Publication date: June 6, 2013Applicant: PANASONIC CORPORATIONInventors: Kazunori Kidera, Takuya Kagawa, Hideki Tamura, Hiroyuki Nishino, Mariko Nishi
-
Publication number: 20130127261Abstract: Provided is a DC connection device including a first connector connected to a DC power source side or a load side; and a second connector connected to the first connector. The first connector or the second connector has a semiconductor switch that is turned on when a portion of at least one of terminals of one of the first and second connectors is brought into contact with a terminal of the other of the first and second connectors, and is turned off before the terminal of the one of the first and second connectors is completely separated from the terminal of the other of the first and second connectors.Type: ApplicationFiled: August 30, 2011Publication date: May 23, 2013Applicant: PANASONIC CORPORATIONInventors: Takuya Kagawa, Hideki Tamura