Patents by Inventor Yuki Fujita
Yuki Fujita 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: 20200398812Abstract: A fuel-empty-state recovery determination method including: when driving of the hybrid vehicle is started, performing rotation speed control of an electric power generator for a specified time, and then stopping the rotation speed control; in a case where it is detected that a state in which the rotation speed of an engine after stopping the rotation speed control is higher than a threshold continues for more than a first determination time, determining that recovery has been made from a fuel-empty state; in a case where the measured time does not exceed the first determination time, starting measurement of the time during which the rotation speed of the engine is lower than the threshold; and in a case where the measured time exceeds a second determination time, maintaining determination that the vehicle is in a fuel-empty state.Type: ApplicationFiled: December 15, 2017Publication date: December 24, 2020Inventors: Yuki Fujita, Shunsuke Baba
-
Publication number: 20200391722Abstract: It is a control method of a hybrid vehicle that includes an engine and an electrical power generation motor that is connected with the engine for controlling a rotational speed of the engine to be a target rotational speed. When an failure with respect to the engine is judged, an upper limit of a target rotational speed of a firing operation is set to a first upper limit rotational speed lower than an upper limit for a normal state. Further, a target rotational speed of a motoring operation is set to be not higher than the first upper limit rotational speed. It becomes possible to carry out transition between the firing operation and the motoring operation quickly.Type: ApplicationFiled: December 15, 2017Publication date: December 17, 2020Inventors: Yuki Fujita, Takeo Aizawa, Kazuki Iijima
-
Publication number: 20200335768Abstract: Provided is a lithium secondary battery including: a positive electrode plate which is a lithium complex oxide sintered plate; a negative electrode layer containing carbon; a separator interposed between the positive electrode plate and the negative electrode layer; and an electrolytic solution with which the positive electrode plate, the negative electrode layer, and the separator are impregnated, wherein the positive electrode plate has a thickness of 70 to 120 ?m, the negative electrode layer has a thickness of 90 to 170 ?m, the lithium secondary battery has a rectangular flat plate shape with each side having a length of 20 to 55 mm, the lithium secondary battery has a thickness of 350 to 500 ?m, and the lithium secondary battery has an energy density of 200 to 300 mWh/cm3.Type: ApplicationFiled: July 2, 2020Publication date: October 22, 2020Applicant: NGK INSULATORS, LTD.Inventors: Yukinobu YURA, Masahiko HIBINO, Yuki FUJITA
-
Publication number: 20200313123Abstract: Provided is a lithium secondary battery including: a positive electrode plate which is a lithium complex oxide sintered plate; a negative electrode layer; a separator; an electrolytic solution; and a pair of exterior films having outer peripheral edges sealed with each other to form an internal space that accommodates the battery elements, wherein the portions of the negative electrode layer and the separator corresponding to the outer extension of the battery is deviated toward the positive electrode plate side from the portions of the negative electrode layer and the separator corresponding to the body of the battery.Type: ApplicationFiled: June 17, 2020Publication date: October 1, 2020Applicant: NGK INSULATORS, LTD.Inventors: Haruo OTSUKA, Yuki FUJITA, Nobuyuki KOBAYASHI
-
Publication number: 20200313195Abstract: Provided is a lithium secondary battery including: a positive electrode plate being a lithium complex oxide sintered plate; a negative electrode layer; a separator; a positive electrode current collector foil; a negative electrode current collector foil; an electrolytic solution; a pair of exterior films having outer peripheral edges sealed with each other to form an internal space that accommodates the battery elements; a positive electrode tab terminal; and a negative electrode tab terminal, wherein the inner peripheral edge of the sealed part of the exterior films and the outer peripheral edge of the positive electrode plate are apart from each other at a distance Wp of 2.0 to 4.0 mm on the side on which the positive electrode tab terminal is sealed, and the electrolytic solution has a volume of 1.05 to 1.25 times the total void volume of the positive electrode plate, the separator, and the negative electrode layer.Type: ApplicationFiled: June 12, 2020Publication date: October 1, 2020Applicant: NGK INSULATORS, LTD.Inventors: Chiori SUZUKI, Yuki FUJITA, Haruo OTSUKA
-
Publication number: 20200203773Abstract: Provided is a secondary lithium battery including: a positive electrode plate that is a sintered lithium complex oxide plate; a negative electrode containing carbon and styrene butadiene rubber (SBR); and an electrolytic solution containing lithium borofluoride (LiBF4) in a non-aqueous solvent composed of ?-butyrolactone (GBL), or composed of ethylene carbonate (EC) and ?-butyrolactone (GBL).Type: ApplicationFiled: March 4, 2020Publication date: June 25, 2020Applicant: NGK INSULATORS, LTD.Inventors: Yuki FUJITA, Chiori SUZUKI
-
Publication number: 20200154618Abstract: A motor includes: a rotating shaft; a motor portion; a circuit board; a case having a circuit housing recess portion for housing the circuit board; and a cover made of a synthetic resin and sealing the opening portion of the circuit housing recess portion. The cover has an outer circumference rib and an inside rib. The outer circumference rib is located on the outer circumferential side from the opening end surface of the circuit housing recess portion and projects from the outer circumferential edge of the cover toward the front surface side of the cover and the rear surface side of the cover. The inside rib is located inside from the opening end surface and projects at least either on the front surface side of the cover or on the rear surface side of the cover.Type: ApplicationFiled: June 28, 2018Publication date: May 14, 2020Applicant: DENSO CORPORATIONInventors: Akihiro OTAWARA, Yuki FUJITA, Yosuke KANBE, Kenji KANI, Hiroyuki OKADA, Yoshiaki FUKUTA
-
Publication number: 20200007026Abstract: There is provided a power converter which can suppress a surge voltage and reduce noise flowing from an input of a power changer. The power converter includes an inverter circuit 140, a capacitor 514 for smoothing DC power, a capacitor 515 for removing noise, and conductors 564p and 564n. The conductors 564p and 564n are connected to the capacitors 514 and 515 when power side terminals 562p and 562n are connected to an inverter circuit 140, and power source side terminals 561p and 561n are connected to a battery 136. In the conductors 564p and 564n, a parasitic inductance L1 between capacitor terminals 563p and 563n and capacitor terminals 560p and 560n is larger than a parasitic inductance L2 between capacitor terminals 563p and 563n and the power side terminals 562p and 562n.Type: ApplicationFiled: July 22, 2019Publication date: January 2, 2020Applicant: Hitachi Automotive Systems, Ltd.Inventors: Youhei NISHIZAWA, Kaname SASAKI, Yutaka OKUBO, Yuki FUJITA
-
Patent number: 10404156Abstract: There is provided a power converter which can suppress a surge voltage and reduce noise flowing from an input of a power changer. The power converter includes an inverter circuit 140, a capacitor 514 for smoothing DC power, a capacitor 515 for removing noise, and conductors 564p and 564n. The conductors 564p and 564n are connected to the capacitors 514 and 515 when power side terminals 562p and 562n are connected to an inverter circuit 140, and power source side terminals 561p and 561n are connected to a battery 136. In the conductors 564p and 564n, a parasitic inductance L1 between capacitor terminals 563p and 563n and capacitor terminals 560p and 560n is larger than a parasitic inductance L2 between capacitor terminals 563p and 563n and the power side terminals 562p and 562n.Type: GrantFiled: December 6, 2018Date of Patent: September 3, 2019Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Youhei Nishizawa, Kaname Sasaki, Yutaka Okubo, Yuki Fujita
-
Publication number: 20190109532Abstract: There is provided a power converter which can suppress a surge voltage and reduce noise flowing from an input of a power changer. The power converter includes an inverter circuit 140, a capacitor 514 for smoothing DC power, a capacitor 515 for removing noise, and conductors 564p and 564n. The conductors 564p and 564n are connected to the capacitors 514 and 515 when power side terminals 562p and 562n are connected to an inverter circuit 140, and power source side terminals 561p and 561n are connected to a battery 136. In the conductors 564p and 564n, a parasitic inductance L1 between capacitor terminals 563p and 563n and capacitor terminals 560p and 560n is larger than a parasitic inductance L2 between capacitor terminals 563p and 563n and the power side terminals 562p and 562n.Type: ApplicationFiled: December 6, 2018Publication date: April 11, 2019Applicant: Hitachi Automotive Systems, Ltd.Inventors: Youhei NISHIZAWA, Kaname SASAKI, Yutaka OKUBO, Yuki FUJITA
-
Patent number: 10181783Abstract: There is provided a power converter which can suppress a surge voltage and reduce noise flowing from an input of a power changer. The power converter includes an inverter circuit 140, a capacitor 514 for smoothing DC power, a capacitor 515 for removing noise, and conductors 564p and 564n. The conductors 564p and 564n are connected to the capacitors 514 and 515 when power side terminals 562p and 562n are connected to an inverter circuit 140, and power source side terminals 561p and 561n are connected to a battery 136. In the conductors 564p and 564n, a parasitic inductance L1 between capacitor terminals 563p and 563n and capacitor terminals 560p and 560n is larger than a parasitic inductance L2 between capacitor terminals 563p and 563n and the power side terminals 562p and 562n.Type: GrantFiled: January 2, 2018Date of Patent: January 15, 2019Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Youhei Nishizawa, Kaname Sasaki, Yutaka Okubo, Yuki Fujita
-
Publication number: 20180198170Abstract: Provided is an all-solid-state lithium battery capable of significantly reducing an increase in resistance during repeated use and thereby considerably improving the long-term reliability despite the use of a thick positive electrode plate composed of a sintered body. The all-solid-state lithium battery includes a self-supporting positive electrode plate composed of a sintered body containing a plurality of crystal grains composed of a positive-electrode active material and having a thickness of 20 ?m or more, a solid electrolyte layer composed of a lithium-ion conductive material disposed on the positive electrode plate, a lithium-containing negative electrode layer disposed on the solid electrolyte layer, and a positive electrode current collector composed of metal foil having a thickness of from 5 ?m to 30 ?m, the positive electrode current collector being in unbound contact with the entire surface of a second side of the positive electrode plate remote from the solid electrolyte layer.Type: ApplicationFiled: March 2, 2018Publication date: July 12, 2018Applicant: NGK INSULATORS, LTD.Inventors: Yuki FUJITA, Nobuyuki KOBAYASHI
-
Patent number: 10003274Abstract: A power conversion device includes: a metal housing; a power semiconductor module that is contained in the metal housing and converts direct electric current to alternating electric current; a capacitor module that is contained in the metal housing and arranged side by side with the power semiconductor module, wherein the capacitor module smoothes the direct electric current supplied to the power semiconductor module; a substrate that has a drive circuit part mounted in a first region, the drive circuit part driving the power semiconductor module, and a control circuit part mounted in a second region, the control circuit part controlling the drive circuit part, wherein the substrate is disposed so as to cover over the metal housing; a base plate that extends in a space in which the second region of the substrate and the capacitor module oppose to each other, and that is electrically connected to the metal housing; and a first noise shielding member that extends in a direction along a boundary between the firsType: GrantFiled: August 6, 2014Date of Patent: June 19, 2018Assignee: Hitachi Automotive Systems, Ltd.Inventors: Masayoshi Takahashi, Keisuke Fukumasu, Yuki Fujita, Takeshi Kato, Hiroki Funato
-
Patent number: 9996000Abstract: Aspects of the present invention relate to a test photomask and a method for evaluating critical dimension changes in the test photomask. Various embodiments include a test photomask. The test photomask includes a plurality of cells having a varied density pattern. The plurality of cells include a first group of cells arranged along a first line, the first group of cells having a first combined density ratio. The plurality of cells also include a second group of cells arranged along a second line, the second group of cells having a second combined density ratio. In the plurality of cells, the second combined density ratio for the second group of cells is equal to the first combined density ratio of the first group of cells. The varied density pattern is configured to substantially neutralize fogging effects.Type: GrantFiled: April 8, 2016Date of Patent: June 12, 2018Assignees: International Business Machines Corporation, Toppan Printing Co., Ltd.Inventors: Brian N. Caldwell, Yuki Fujita, Raymond W. Jeffer, James P. Levin, Joseph L. Malenfant, Jr., Steven C. Nash
-
Patent number: 9989843Abstract: Aspects of the present invention relate to a test photomask and a method for evaluating critical dimension changes in the test photomask. Various embodiments include a test photomask. The test photomask includes a plurality of cells having a varied density pattern. The plurality of cells include a first group of cells arranged along a first line, the first group of cells having a first combined density ratio. The plurality of cells also include a second group of cells arranged along a second line, the second group of cells having a second combined density ratio. In the plurality of cells, the second combined density ratio for the second group of cells is equal to the first combined density ratio of the first group of cells. The varied density pattern is configured to substantially neutralize fogging effects.Type: GrantFiled: April 8, 2016Date of Patent: June 5, 2018Assignees: International Business Machines Corporation, Toppan Printing Co., Ltd.Inventors: Brian N. Caldwell, Yuki Fujita, Raymond W. Jeffer, James P. Levin, Joseph L. Malenfant, Jr., Steven C. Nash
-
Publication number: 20180123445Abstract: There is provided a power converter which can suppress a surge voltage and reduce noise flowing from an input of a power changer. The power converter includes an inverter circuit 140, a capacitor 514 for smoothing DC power, a capacitor 515 for removing noise, and conductors 564p and 564n. The conductors 564p and 564n are connected to the capacitors 514 and 515 when power side terminals 562p and 562n are connected to an inverter circuit 140, and power source side terminals 561p and 561n are connected to a battery 136. In the conductors 564p and 564n, a parasitic inductance L1 between capacitor terminals 563p and 563n and capacitor terminals 560p and 560n is larger than a parasitic inductance L2 between capacitor terminals 563p and 563n and the power side terminals 562p and 562n.Type: ApplicationFiled: January 2, 2018Publication date: May 3, 2018Applicant: Hitachi Automotive Systems, Ltd.Inventors: Youhei NISHIZAWA, Kaname SASAKI, Yutaka OKUBO, Yuki FUJITA
-
Patent number: 9893603Abstract: There is provided a power converter which can suppress a surge voltage and reduce noise flowing from an input of a power changer. The power converter includes an inverter circuit 140, a capacitor 514 for smoothing DC power, a capacitor 515 for removing noise, and conductors 564p and 564n. The conductors 564p and 564n are connected to the capacitors 514 and 515 when power side terminals 562p and 562n are connected to an inverter circuit 140, and power source side terminals 561p and 561n are connected to a battery 136. In the conductors 564p and 564n, a parasitic inductance L1 between capacitor terminals 563p and 563n and capacitor terminals 560p and 560n is larger than a parasitic inductance L2 between capacitor terminals 563p and 563n and the power side terminals 562p and 562n.Type: GrantFiled: May 11, 2015Date of Patent: February 13, 2018Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Youhei Nishizawa, Kaname Sasaki, Yutaka Okubo, Yuki Fujita
-
Patent number: 9724333Abstract: Provided is a novel therapeutic means for Alzheimer's disease. In particular, provided is a compound represented by the following general formula (I): or a salt thereof.Type: GrantFiled: April 19, 2016Date of Patent: August 8, 2017Assignee: GREEN TECH CO., LTD.Inventors: Hachiro Sugimoto, Michiaki Okuda, Shinichi Nakayama, Yoshikazu Inoue, Yoko Sakata, Yuki Fujita, Rie Tokizane
-
Patent number: 9667040Abstract: Inductance is reduced while high insulation reliability between positive and negative electrodes of a DC bus bar is ensured. The DC bus bar 801a (801b) is held; the bus bar 801a (801b) is fixed by an insulating member 802a (802b) having an insulating property, with one surface 14 (15) of the bus bar 801a (801b) exposed; the bus bar 801a is arranged such that the surface 14 of the bus bar 801a faces the surface 15 of the second bus bar 801b; an insulating sheet 803 is held between the bus bar 801a and the bus bar 801b; the first insulating member 802a has a projecting part 804a projecting toward the second insulating member 802b; and the projecting part 804a has, at an end part thereof, an abutting surface 13 in contact with the second insulating member 802b.Type: GrantFiled: September 24, 2014Date of Patent: May 30, 2017Assignee: Hitachi Automotive Systems, Ltd.Inventors: Yuki Fujita, Kaname Sasaki, Kenichirou Nakajima
-
Publication number: 20170063218Abstract: There is provided a power converter which can suppress a surge voltage and reduce noise flowing from an input of a power changer. The power converter includes an inverter circuit 140, a capacitor 514 for smoothing DC power, a capacitor 515 for removing noise, and conductors 564p and 564n. The conductors 564p and 564n are connected to the capacitors 514 and 515 when power side terminals 562p and 562n are connected to an inverter circuit 140, and power source side terminals 561p and 561n are connected to a battery 136. In the conductors 564p and 564n, a parasitic inductance L1 between capacitor terminals 563p and 563n and capacitor terminals 560p and 560n is larger than a parasitic inductance L2 between capacitor terminals 563p and 563n and the power side terminals 562p and 562n.Type: ApplicationFiled: May 11, 2015Publication date: March 2, 2017Applicant: Hitachi Automotive Systems, Ltd.Inventors: Youhei NISHIZAWA, Kaname SASAKI, Yutaka OKUBO, Yuki FUJITA