Patents by Inventor Yoshitaka Fujita
Yoshitaka 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).
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Patent number: 11926074Abstract: An intermediate base material is provided that is excellent in the conformity to three-dimensional shapes and that, when formed into a fiber reinforced plastic, develops good surface quality and high mechanical properties. According to one aspect, an incised prepreg is provided that has, in at least a partial region in a prepreg that contains unidirectionally oriented reinforcing fibers and a resin, a plurality of incisions that divide reinforcing fibers, wherein, in the case where a population is made up of the numbers of incisions contained in ten small circular regions of 10 mm in diameter randomly selected in the aforementioned region, a mean value for the population is 10 or greater and a coefficient of variation therefor is within 20%.Type: GrantFiled: December 30, 2020Date of Patent: March 12, 2024Assignee: TORAY INDUSTRIES, INC.Inventors: Yuzo Fujita, Yuta Naito, Ichiro Taketa, Shiori Kawamoto, Yoshitaka Koyama
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Publication number: 20230219560Abstract: A vehicle includes a brake device, a suspension, and an electronic control unit configured to: control the brake device such that, in at least a part of a first range being a required deceleration range lower than a lower limit value of a vehicle deceleration perceivable by a person in the vehicle, a front-rear distribution ratio is constant regardless of the vehicle deceleration, and, in a second range in which the vehicle deceleration is higher than that in the first range, the front-rear distribution ratio is biased toward a rear wheel than in the first range; and in a specific deceleration range including the second range and higher than the first range, execute at least one of reducing a compression-side damping force of a front wheel damper compared with the first range and increasing an extension-side damping force of a rear wheel damper compared with the first range.Type: ApplicationFiled: January 4, 2023Publication date: July 13, 2023Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yoshitaka FUJITA
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Publication number: 20230202440Abstract: The electronic control unit is configured to, when braking by the braking device is performed in a deceleration state where the coasting deceleration is equal to or less than a threshold value, distribute target braking force corresponding to requested deceleration to front-wheel braking force and rear-wheel braking force in accordance with a front-rear distribution ratio determined from the requested deceleration and the braking force distribution characteristics, and when the braking is performed in a deceleration state where the coasting deceleration is higher than the threshold value, distribute corrected target braking force to the front-wheel braking force and the rear-wheel braking force in accordance with the front-rear distribution ratio determined from total deceleration and the braking force distribution characteristics, the corrected target braking force being a sum of the target braking force and braking force that generates the coasting deceleration.Type: ApplicationFiled: October 21, 2022Publication date: June 29, 2023Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yoshitaka FUJITA
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Publication number: 20230173926Abstract: A vehicle according to the present disclosure includes a brake device and an electronic control unit. The brake device is configured to change a front-rear distribution ratio of braking force with respect to front and rear wheels. The electronic control unit is configured to: control the brake device such that the front-rear distribution ratio is in accordance with a fixed distribution characteristic in which the front-rear distribution ratio is constant regardless of deceleration of the vehicle in at least a part of a first range being a required deceleration range lower than a lower limit value of the deceleration perceivable by a person in the vehicle; and control the brake device such that the front-rear distribution ratio is biased toward the rear wheel than that in the fixed distribution characteristic in a second range in which the deceleration is higher than that in the first range.Type: ApplicationFiled: December 1, 2022Publication date: June 8, 2023Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, ADVICS CO., LTD.Inventors: Nozomu MARUHASHI, Yuichi Shimizu, Toshiki Hara, Yoshitaka Fujita
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Patent number: 11458846Abstract: A brake force control apparatus allocates all of required brake force to a target front wheel friction brake force when the required brake force is equal to or smaller than a maximum regeneration brake force. The apparatus decreases the target regeneration brake force by a first predetermined amount at a first time point at which a front wheel acceleration varies from a value larger than a first acceleration threshold to a value equal to or smaller than the first acceleration threshold. The apparatus increases the target regeneration brake force in such a manner that the target regeneration brake force coincides with the required brake force, if the front wheel acceleration becomes larger than a second acceleration threshold in a period from the first time point to a second time point at which a predetermined time elapses from the first time point.Type: GrantFiled: May 6, 2020Date of Patent: October 4, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yoshitaka Fujita
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Publication number: 20220258618Abstract: The motor control unit reduces the drive braking torque for applying the braking force to the drive wheel by the reverse rotation timing predicted by the reverse rotation prediction unit at the latest, and the friction braking unit increases a friction braking force applied to the drive wheel by the friction braking device so that the friction braking force exceeds the braking force provided by the drive braking torque by the reverse rotation timing predicted by the reverse rotation prediction unit at the latest.Type: ApplicationFiled: May 3, 2022Publication date: August 18, 2022Applicants: DENSO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masakatsu SHIGYOH, Takashi SATOU, Takuto SUZUKI, Kensuke UEDA, Yoshitaka FUJITA, Tomohiro YAMASHITA, Masao YANO, Sota UKAI
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Publication number: 20200353819Abstract: A brake force control apparatus allocates all of required brake force to a target front wheel friction brake force when the required brake force is equal to or smaller than a maximum regeneration brake force. The apparatus decreases the target regeneration brake force by a first predetermined amount at a first time point at which a front wheel acceleration varies from a value larger than a first acceleration threshold to a value equal to or smaller than the first acceleration threshold. The apparatus increases the target regeneration brake force in such a manner that the target regeneration brake force coincides with the required brake force, if the front wheel acceleration becomes larger than a second acceleration threshold in a period from the first time point to a second time point at which a predetermined time elapses from the first time point.Type: ApplicationFiled: May 6, 2020Publication date: November 12, 2020Inventor: Yoshitaka Fujita
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Patent number: 10538137Abstract: A first active stabilizer is installed on a main drive wheel side, and a second active stabilizer is installed on a subordinate drive wheel side. A control device performs load distribution control when a difference in actual driving force between left and right sides of a vehicle exceeds a threshold value during acceleration. A high-? side is one of the left and right sides with a greater actual driving force, and a low-? side is another of the left and right sides. The load distribution control includes a first mode performed when a vehicle speed is equal to or lower than a first reference value. In the first mode, the control device actuates the first active stabilizer in a direction to lift up the high-? side and actuates the second active stabilizer in a direction to lift up the low-? side.Type: GrantFiled: October 27, 2017Date of Patent: January 21, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yoshitaka Fujita
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Patent number: 10427671Abstract: A vehicle stability control device has: a front active stabilizer installed on a front wheel side; a rear active stabilizer installed on a rear wheel side; a turning device for turning the front and rear wheels; and a control device configured to perform load distribution control in conjunction with turning control that actuates the turning device, when a difference in braking force between left and right sides of the vehicle exceeds a threshold value during braking. A first side is one of the left and right sides with a greater braking force, and a second side is the other of the left and right sides. In the load distribution control, the control device actuates the rear active stabilizer in a direction to lift up the first side and actuates the front active stabilizer in a direction to lift up the second side.Type: GrantFiled: August 21, 2017Date of Patent: October 1, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yoshitaka Fujita
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Publication number: 20180178610Abstract: A first active stabilizer is installed on a main drive wheel side, and a second active stabilizer is installed on a subordinate drive wheel side. A control device performs load distribution control when a difference in actual driving force between left and right sides of a vehicle exceeds a threshold value during acceleration. A high-? side is one of the left and right sides with a greater actual driving force, and a low-? side is another of the left and right sides. The load distribution control includes a first mode performed when a vehicle speed is equal to or lower than a first reference value. In the first mode, the control device actuates the first active stabilizer in a direction to lift up the high-? side and actuates the second active stabilizer in a direction to lift up the low-? side.Type: ApplicationFiled: October 27, 2017Publication date: June 28, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yoshitaka FUJITA
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Publication number: 20180111607Abstract: A vehicle stability control device has: a front active stabilizer installed on a front wheel side; a rear active stabilizer installed on a rear wheel side; a turning device for turning the front and rear wheels; and a control device configured to perform load distribution control in conjunction with turning control that actuates the turning device, when a difference in braking force between left and right sides of the vehicle exceeds a threshold value during braking. A first side is one of the left and right sides with a greater braking force, and a second side is the other of the left and right sides. In the load distribution control, the control device actuates the rear active stabilizer in a direction to lift up the first side and actuates the front active stabilizer in a direction to lift up the second side.Type: ApplicationFiled: August 21, 2017Publication date: April 26, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yoshitaka FUJITA
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Patent number: 9802588Abstract: A vehicle control apparatus which performs a travel control of a vehicle during a traffic jam, includes a wheel setting unit configured to set at least one wheel to be a brake wheel to be applied with a braking force during the travel control and at least one wheel to be a non-brake wheel not to be applied with the braking force during the travel control, and a control unit configured to perform the travel control of the vehicle based on a rotation amount of the at least one brake wheel and a rotation amount of the at least one non-brake wheel detected by a wheel speed sensor detecting the rotation amount of a wheel of the vehicle.Type: GrantFiled: November 11, 2016Date of Patent: October 31, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Go Inoue, Yoshitaka Fujita
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Patent number: 9789869Abstract: The invention is equipped with a travelable range detection device that detects a travelable range of a vehicle, a traveling control device that controls the vehicle such that the vehicle travels in the travelable range detected by the travelable range detection device, a vehicle control device that controls a behavior of the vehicle, and a controller that executes control to suppress a controlled variable of the traveling control device until a driver's follow-up operation for causing the vehicle to follow the travelable range by the vehicle control device is detected after start of control of the traveling control device.Type: GrantFiled: November 8, 2012Date of Patent: October 17, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yoshitaka Fujita
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Publication number: 20170057477Abstract: A vehicle control apparatus which performs a travel control of a vehicle during a traffic jam, includes a wheel setting unit configured to set at least one wheel to be a brake wheel to be applied with a braking force during the travel control and at least one wheel to be a non-brake wheel not to be applied with the braking force during the travel control, and a control unit configured to perform the travel control of the vehicle based on a rotation amount of the at least one brake wheel and a rotation amount of the at least one non-brake wheel detected by a wheel speed sensor detecting the rotation amount of a wheel of the vehicle.Type: ApplicationFiled: November 11, 2016Publication date: March 2, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Go INOUE, Yoshitaka FUJITA
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Patent number: 9562166Abstract: A structure includes a surface coat layer of which the thickness on a bump such as a weld bead and a weld spatter or an edge portion, possibly formed on the surface of a base, is not greatly different from the thickness on a flat portion. The structure therefore has excellent properties including heat insulation properties and electrical insulation properties. The structure includes a base that is made of a metal, and has a flat portion and at least one of a bump and an edge portion on a surface; and a surface coat layer that is formed from an amorphous inorganic material and particles of a crystalline inorganic material, and covers the surface of the base, the surface coat layer including a first coat portion covering the flat portion and a second coat portion covering the at least one of a bump and an edge portion.Type: GrantFiled: October 10, 2014Date of Patent: February 7, 2017Assignee: IBIDEN CO., LTD.Inventors: Fumiyuki Mutsuda, Yoshitaka Fujita
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Patent number: 9522661Abstract: A vehicle control apparatus which performs a parking control of a vehicle, includes a wheel setting unit configured to set at least one brake wheel which is a wheel to which a braking force is applied during the parking control and at least one non-brake wheel which is a wheel to which the braking force is not applied during the parking control, and a control unit configured to perform the parking control of the vehicle based on a rotation amount of at least one brake wheel and a rotation amount of at least one non-brake wheel detected by a wheel speed sensor detecting the rotation amount of a wheel of the vehicle.Type: GrantFiled: February 4, 2015Date of Patent: December 20, 2016Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Go Inoue, Yoshitaka Fujita
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Patent number: 9416283Abstract: A solution for forming an organic thin film wherein the total starting amount of metal surfactants (A) and (B) is 0.05 to 50 wt %, the amount of a hydroxyl group-containing compound generated with the progress of the hydrolysis reaction is 20 ppm to 6 wt %, and the amount of a compound (C) that can interact with the metal surfactant is 0.01 ppm to 8 ppm in terms of metal, relative to the total amount of the solution for forming an organic thin film.Type: GrantFiled: September 15, 2014Date of Patent: August 16, 2016Assignee: Nippon Soda Co., Ltd.Inventors: Tomoya Hidaka, Yoshitaka Fujita, Norifumi Nakamoto, Kazuhisa Kumazawa, Eiji Hoshi
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Publication number: 20160095164Abstract: A heater of an embodiment includes a bulb, a filament, a gas, and metallic members. The filament is disposed in the inside portion of the bulb along a tube axis and includes a radiative unit and non-radiative units. The radiative unit performs radiation when applying current. The non-radiative units are disposed at either end of the radiative unit in a tube axis direction, are electrically connected to the radiative unit, and do not perform radiation relative to the radiative unit when applying current. The bulb includes a radiative region and non-radiative regions. The radiative unit is disposed in the radiative region. The non-radiative units are disposed in the non-radiative regions. The metallic members are disposed in the inside portion of the bulb, are thermally conductible, and are disposed in the non-radiative regions.Type: ApplicationFiled: July 6, 2015Publication date: March 31, 2016Inventor: Yoshitaka FUJITA
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Patent number: 9263246Abstract: A lamp includes a bulb, a filament, a gas, and a reflective film. The filament is disposed in the interior of the bulb along the tube axis. The gas is filled in the interior of the bulb. The reflective film is formed on the outer circumferential surface of the bulb and reflects a light from the filament toward the interior of the bulb. Further, the reflective film may be formed by depositing a reflective film material containing TiO2, SiO2, and BaSO4 on the outer circumferential surface of the bulb.Type: GrantFiled: January 27, 2015Date of Patent: February 16, 2016Assignee: Toshiba Lighting & Technology CorporationInventors: Tsuyoshi Ohashi, Masaaki Takatsuka, Yoshitaka Fujita
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Patent number: 9180406Abstract: An exhaust gas processing device includes a cylindrical metallic member and an insulating layer. The insulating layer has a thickness of about 20 ?m to about 400 ?m and is densely formed such that no through pores exist in a thickness direction of the insulating layer. The insulating layer is provided on an inner surface of the cylindrical metallic member.Type: GrantFiled: November 26, 2014Date of Patent: November 10, 2015Assignee: IBIDEN CO., LTD.Inventors: Fumiyuki Mutsuda, Yoshitaka Fujita