Patents by Inventor Tsuyoshi Okamoto
Tsuyoshi Okamoto 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: 10913327Abstract: An air conditioner for a vehicle includes a cooling water circuit and a heater. The cooling water circuit allows a cooling water to circulate between an engine and a heater core in a heating operation. The engine is a power source of the vehicle. The heater core is configured to heat air using a heat of the cooling water. The heater is located downstream of the engine and upstream of the heater core in the cooling water circuit and is configured to heat the cooling water.Type: GrantFiled: October 11, 2016Date of Patent: February 9, 2021Assignee: DENSO CORPORATIONInventors: Tsuyoshi Okamoto, Takayuki Watanabe
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Patent number: 10746117Abstract: A vehicle control device for a vehicle including an engine that is a power source of the vehicle, and a heating unit that heats a coolant of the engine includes a water temperature determination part that determines whether or not a temperature of the coolant is lower than a predetermined value, and a heating control part that performs an operation limitation to stop an output of the heating unit or to limit the output of the heating unit to a predetermined upper limit value or lower, when the water temperature determination part determines that the temperature of the coolant is lower than the predetermined value.Type: GrantFiled: December 6, 2016Date of Patent: August 18, 2020Assignee: DENSO CORPORATIONInventors: Tsuyoshi Okamoto, Takayuki Watanabe
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Patent number: 10696140Abstract: An air conditioner for a vehicle including an engine, which serves as a power source and is configured to allow a cooling water to flow therethrough, includes a cooling water circuit, a heater, temperature sensors, and an output controller. The cooling water circuit allows the cooling water to circulate therein in a heating operation. The heater serves as a heat source, other than the engine, configured to heat the cooling water circulating in the cooling water circuit. The temperature sensors are connectable to the cooling water circuit and are configured to detect a temperature of the cooling water. The temperature sensors are positioned upstream and downstream of at least one of the engine and the heater. The output controller is configured to adjust at least an output of the heater based on the temperatures of the cooling water detected by the temperature sensors.Type: GrantFiled: October 21, 2016Date of Patent: June 30, 2020Assignee: DENSO CORPORATIONInventors: Tsuyoshi Okamoto, Takayuki Watanabe
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Publication number: 20200196503Abstract: ‘Kiyoka’ is a new variety of tea plant bred by crossbreeding FYZ-41 (‘Yabukita’ x ‘Shizuinzatsu 131’), a hybrid, as the female parent and ‘Saemidori’ as the male parent. The plant may be used, e.g., for cultivation of tea leaves and leaf buds for consumption. The steamed leaves and leaf buds of ‘Kiyoka’ have a distinctive floral aroma, and excellent taste.Type: ApplicationFiled: December 12, 2019Publication date: June 18, 2020Inventors: Katsuyuki Yoshida, Akiko Ogino, Atsushi Nesumi, Tetsuji Saba, Junichi Tanaka, Fumiya Taniguchi, Shuya Yamashita, Hiroshi Yorozuya, Akiko Matsunaga, Yoshiyuki Takeda, Tsuyoshi Okamoto, Hitoshi Yoshitomi
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Patent number: 10675946Abstract: A vehicle includes an engine, a generator driven by the engine to generate an electric power, and a high-voltage battery charged with the electric power. An air heating in a vehicle interior is implemented by waste heat of the engine through which a heat medium is circulated and heated, and an air heating in the vehicle interior is implemented by a heat pump device consuming the electric power of the electric storage device. A hybrid ECU performs air conditioning control, and includes a determination device that determines whether to implement the air heating by the waste heat or the air heating by the heat pump device based on an engine body temperature, and a heating control device that selectively implements the air heating by the waste heat and the air heating by the heat pump device based on a determination result of the determination device.Type: GrantFiled: December 21, 2015Date of Patent: June 9, 2020Assignee: DENSO CORPORATIONInventor: Tsuyoshi Okamoto
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Patent number: 10639962Abstract: A heat pump and a heater core are provided at a heating coolant water circuit connected to an engine. As heating thermal amount control, the control of decreasing the output of the heat pump and increasing the output of the engine with an increase in an engine outlet water temperature detected by an engine outlet water temperature sensor, thereby ensuring a target heating thermal amount. Thus, in response to a decrease in a heat generation efficiency of the heat pump with an increase in the engine outlet water temperature, the output of the heat pump is decreased so that fuel economy can be improved while the output of the engine is increased so that the target heating thermal amount can be ensured.Type: GrantFiled: February 1, 2017Date of Patent: May 5, 2020Assignee: DENSO CORPORATIONInventors: Tsuyoshi Okamoto, Takayuki Watanabe
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Patent number: 10381082Abstract: A nonvolatile semiconductor storage device has floating-gate memory cells and a memory control circuit which controls them. During programming operation of the memory cells, the memory control circuit makes the potentials at the backgate and source of the memory cells equal. For example, during programming operation of the memory cells, the memory control circuit short-circuits together the backgate and source of the memory cells. For another example, during programming operation of the memory cells, the memory control circuit switches from a state where the potentials at the backgate and source of the memory cells are equal to a floating state.Type: GrantFiled: April 30, 2018Date of Patent: August 13, 2019Assignee: Rohm Co., Ltd.Inventors: Tsuyoshi Okamoto, Kazuhisa Ukai, Seiichi Yamamoto
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Patent number: 10215110Abstract: According to a temperature of an engine, a state-of-charge of a battery, a requirement of instruments and a driver's requirement, an engine control is switched between a first engine control and a second engine control. In the first engine control, an electric power is firstly used for a vehicle-driving prior to other functions. In the second engine control, the electric power is firstly used for functions other than the vehicle-driving.Type: GrantFiled: April 2, 2014Date of Patent: February 26, 2019Assignee: DENSO CORPORATIONInventor: Tsuyoshi Okamoto
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Publication number: 20190030990Abstract: A heat pump and a heater core are provided at a heating coolant water circuit connected to an engine. As heating thermal amount control, the control of decreasing the output of the heat pump and increasing the output of the engine with an increase in an engine outlet water temperature detected by an engine outlet water temperature sensor, thereby ensuring a target heating thermal amount. Thus, in response to a decrease in a heat generation efficiency of the heat pump with an increase in the engine outlet water temperature, the output of the heat pump is decreased so that fuel economy can be improved while the output of the engine is increased so that the target heating thermal amount can be ensured.Type: ApplicationFiled: February 1, 2017Publication date: January 31, 2019Applicant: DENSO CORPORATIONInventors: Tsuyoshi OKAMOTO, Takayuki WATANABE
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Publication number: 20180370332Abstract: An air conditioner for a vehicle including an engine, which serves as a power source and is configured to allow a cooling water to flow therethrough, includes a cooling water circuit, a heater, temperature sensors, and an output controller. The cooling water circuit allows the cooling water to circulate therein in a heating operation. The heater serves as a heat source, other than the engine, configured to heat the cooling water circulating in the cooling water circuit. The temperature sensors are connectable to the cooling water circuit and are configured to detect a temperature of the cooling water. The temperature sensors are positioned upstream and downstream of at least one of the engine and the heater. The output controller is configured to adjust at least an output of the heater based on the temperatures of the cooling water detected by the temperature sensors.Type: ApplicationFiled: October 21, 2016Publication date: December 27, 2018Applicant: DENSO CORPORATIONInventors: Tsuyoshi OKAMOTO, Takayuki WATANABE
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Patent number: 10160442Abstract: For a hybrid vehicle including: an engine and a motor, each of which is mounted as a driving source; a generator driven by the engine; a high-voltage battery and a low-voltage battery, each of which can be charged and discharged; a converter connected between the high-voltage battery and the low-voltage battery; and an auxiliary load that consumes electric power supplied from the high-voltage battery via the converter or electric power supplied from the low-voltage battery, a control device includes a control unit that executes converter limit control that stops the converter or reduces output of the converter when a state of charge of the high-voltage battery is lower than or equal to a predetermined threshold.Type: GrantFiled: December 11, 2015Date of Patent: December 25, 2018Assignee: DENSO CORPORATIONInventors: Mitsuharu Higashitani, Tsuyoshi Okamoto, Noriaki Ikemoto
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Patent number: 10138437Abstract: The present invention provides a water-soluble lubricating oil including a water-soluble base (A) and a corrosion inhibitor (B). The water-soluble base (A) contains at least one polyether (A1). A 0.1% by weight aqueous solution of the water-soluble lubricating oil has a surface tension of 31 mN/m or higher.Type: GrantFiled: August 21, 2014Date of Patent: November 27, 2018Assignee: SANYO CHEMICAL INDUSTRIES, LTD.Inventors: Tsuyoshi Okamoto, Yoshitaka Katsukawa, Yusuke Yamazaki, Toshiki Kojima, Tsuyoshi Fukushima, Mitsumasa Kamura
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Publication number: 20180315480Abstract: A nonvolatile semiconductor storage device has floating-gate memory cells and a memory control circuit which controls them. During programming operation of the memory cells, the memory control circuit makes the potentials at the backgate and source of the memory cells equal. For example, during programming operation of the memory cells, the memory control circuit short-circuits together the backgate and source of the memory cells. For another example, during programming operation of the memory cells, the memory control circuit switches from a state where the potentials at the backgate and source of the memory cells are equal to a floating state.Type: ApplicationFiled: April 30, 2018Publication date: November 1, 2018Inventors: Tsuyoshi OKAMOTO, Kazuhisa Ukai, Seiichi Yamamoto
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Publication number: 20180312038Abstract: An air conditioner for a vehicle includes a cooling water circuit and a heater. The cooling water circuit allows a cooling water to circulate between an engine and a heater core in a heating operation. The engine is a power source of the vehicle. The heater core is configured to heat air using a heat of the cooling water. The heater is located downstream of the engine and upstream of the heater core in the cooling water circuit and is configured to heat the cooling water.Type: ApplicationFiled: October 11, 2016Publication date: November 1, 2018Applicant: DENSO CORPORATIONInventors: Tsuyoshi OKAMOTO, Takayuki WATANABE
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Publication number: 20180258874Abstract: A vehicle control device for a vehicle including an engine that is a power source of the vehicle, and a heating unit that heats a coolant of the engine includes a water temperature determination part that determines whether or not a temperature of the coolant is lower than a predetermined value, and a heating control part that performs an operation limitation to stop an output of the heating unit or to limit the output of the heating unit to a predetermined upper limit value or lower, when the water temperature determination part determines that the temperature of the coolant is lower than the predetermined value.Type: ApplicationFiled: December 6, 2016Publication date: September 13, 2018Applicant: DENSO CORPORATIONInventors: Tsuyoshi OKAMOTO, Takayuki WATANABE
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Publication number: 20170368911Abstract: A vehicle includes an engine, a generator driven by the engine to generate an electric power, and a high-voltage battery charged with the electric power. An air heating in a vehicle interior is implemented by waste heat of the engine through which a heat medium is circulated and heated, and an air heating in the vehicle interior is implemented by a heat pump device consuming the electric power of the electric storage device. A hybrid ECU performs air conditioning control, and includes a determination device that determines whether to implement the air heating by the waste heat or the air heating by the heat pump device based on an engine body temperature, and a heating control device that selectively implements the air heating by the waste heat and the air heating by the heat pump device based on a determination result of the determination device.Type: ApplicationFiled: December 21, 2015Publication date: December 28, 2017Inventor: Tsuyoshi OKAMOTO
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Publication number: 20170240162Abstract: For a hybrid vehicle including: an engine and a motor, each of which is mounted as a driving source; a generator driven by the engine; a high-voltage battery and a low-voltage battery, each of which can be charged and discharged; a converter connected between the high-voltage battery and the low-voltage battery; and an auxiliary load that consumes electric power supplied from the high-voltage battery via the converter or electric power supplied from the low-voltage battery, a control device includes a control unit that executes converter limit control that stops the converter or reduces output of the converter when a state of charge of the high-voltage battery is lower than or equal to a predetermined threshold.Type: ApplicationFiled: December 11, 2015Publication date: August 24, 2017Applicant: DENSO CORPORATIONInventors: Mitsuharu HIGASHITANI, Tsuyoshi OKAMOTO, Noriaki IKEMOTO
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Patent number: 9522672Abstract: A hybrid control device calculates engine rotational speed and engine torque based on cooling water temperature for an engine and a charging state of a main battery. The hybrid control device operates the engine in a maximum charging efficiency mode, when the cooling water temperature is lower than a target temperature value and the main battery has a remaining charging capacity. In the maximum charging efficiency mode, the hybrid control device calculates such engine rotational speed and engine torque, which realize engine operation according to which a fuel consumption amount for a unit amount of charging electric power is minimized. As a result, efficiency of a vehicle control system is improved as a whole, to thereby improve fuel consumption ratio.Type: GrantFiled: February 5, 2015Date of Patent: December 20, 2016Assignee: DENSO CORPORATIONInventor: Tsuyoshi Okamoto
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Patent number: 9522481Abstract: A water-soluble cutting fluid for slicing silicon ingots is characterized in that it includes a monoprotic or diprotic aliphatic carboxylic acid (A) having a carbon number (including the carbon in the carbonyl group) of 4˜10, and either a polyprotic organic acid (B) with ?pKa of 0.9˜2.3 as defined by the following formula (1) or a salt (BA) of said organic acid (B) as essential components: ?pKa=(pKa2)?(pKa1)??(1) wherein the dissociation stage, at which the organic acid (B) denoted as n-protic acid HnA, becomes Hn-1A+H+ is numbered 1 with an acid dissociation constant expressed as pKa1, and the dissociation stage at which the organic acid (B) becomes Hn-2A+H+ is numbered as 2 with an acid dissociation constant expressed as pKa2.Type: GrantFiled: August 30, 2010Date of Patent: December 20, 2016Assignee: SANYO CHEMICAL INDUSTRIES, LTD.Inventors: Aki Hidaka, Yoshitaka Katsukawa, Tsuyoshi Okamoto
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Patent number: PP32830Abstract: ‘Kiyoka’ is a new variety of tea plant bred by crossbreeding FYZ-41 (‘Yabukita’ x ‘Shizuinzatsu 131’), a hybrid, as the female parent and ‘Saemidori’ as the male parent. The steamed leaves and leaf buds of ‘Kiyoka’ have a distinctive floral aroma, and excellent taste.Type: GrantFiled: December 12, 2019Date of Patent: February 23, 2021Assignee: National Agriculture and Food Research OrganizationInventors: Katsuyuki Yoshida, Akiko Ogino, Atsushi Nesumi, Tetsuji Saba, Junichi Tanaka, Fumiya Taniguchi, Shuya Yamashita, Hiroshi Yorozuya, Akiko Matsunaga, Yoshiyuki Takeda, Tsuyoshi Okamoto, Hitoshi Yoshitomi