Patents by Inventor Takashi Kuwahara
Takashi Kuwahara 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: 11952286Abstract: Provided are: an Mn ferrite powder characterized by including a plurality of ferrite particles, having a volume-average particle diameter of 1-10 ?m, and having a 2.106 ?m volume-based cumulative distribution (sieved) of 0.1-50.0 vol %; and a resin composition characterized by including said powder and a resin material.Type: GrantFiled: February 6, 2019Date of Patent: April 9, 2024Assignee: POWDERTECH CO., LTD.Inventors: Koji Aga, Takashi Kojima, Kazutaka Ishii, Tetsuya Igarashi, Sho Kuwahara
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Publication number: 20240072819Abstract: An AD conversion device includes an AD converter that outputs an analog signal as sampling data for every sampling point based on a sampling frequency, a controller, and a storage circuit, the controller includes a buffer memory which temporarily stores the sampling data from the AD converter in time series and from which the sampling data is read out in time series, and a decimation controller, the decimation controller outputs a write-enable signal indicating write-enabled for the selected sampling data in the decimation region and the sampling data in the high-speed sampling region, and outputs decimation bit information indicating whether the sampling data is the sampling data of the decimation region or the sampling data of the high-speed sampling region, and the storage circuit stores the sampling data stored in the buffer memory in association with the decimation bit information, in response to the write-enable signal.Type: ApplicationFiled: November 6, 2023Publication date: February 29, 2024Applicant: Mitsubishi Electric CorporationInventors: Takashi KUWAHARA, Yoshihiro AKEBOSHI
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Publication number: 20230095375Abstract: An inverter includes a case, and the case includes an upper case and a lower case attached to a bottom surface side of the upper case. The upper case includes a flange portion constituting an attachment portion of the lower case, and a connector connecting portion to which a connector is connected. The connector connecting portion includes an outer wall portion that forms an outer wall of the connector connecting portion. At least a part of the flange portion and at least a part of the outer wall portion are disposed so as to overlap each other in a direction in which the connector connecting portion and the structure face each other.Type: ApplicationFiled: March 4, 2020Publication date: March 30, 2023Applicant: NISSAN MOTOR CO., LTD.Inventors: Takashi KUWAHARA, Toshihiro YAMASHITA, Daisuke ASAKURA, Seiji HOSHIKA
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Patent number: 11418314Abstract: On the basis of the peak point of the integrated waveform of the reception signal for each one-bit time, a timing of resetting the integrated value of the reception signal for each one-bit time and a timing of determining whether a voltage of the reception signal for each one-bit time is high or low are indicated.Type: GrantFiled: October 15, 2021Date of Patent: August 16, 2022Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Takashi Kuwahara, Koji Shibuya, Tetsu Owada
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Patent number: 11336009Abstract: An array antenna device includes a classifying unit that classifies rotating devices into a plurality of groups with different priorities under the condition that the number of rotating devices included in one group is equal to or less than the number of rotating devices that is calculated by a number-of-drivable-devices calculating unit; and a rotation instructing unit that selects groups in descending order of priority from among the plurality of groups and drives, each time one group is selected, all rotating devices included in the group, and the classifying unit performs the classification in such a manner that, among the rotating devices, a rotating device that rotates an element antenna with a higher importance level is classified into a group with a higher priority.Type: GrantFiled: December 18, 2020Date of Patent: May 17, 2022Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Takashi Kuwahara, Tetsu Owada, Narihiro Nakamoto
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Patent number: 11276719Abstract: A solid-state imaging device includes: an imager including pixels arranged in rows and columns; vertical transfer portions in one-to-one correspondence with columns of the pixels, each of which includes a readout electrode that reads out signal charges generated in the pixels and a transfer electrode that transfers the read-out signal charges in the column direction; and a horizontal transfer portion which transfers, in the row direction, the signal charges transferred by the vertical transfer portions, and outputs the signal charges. The imager is formed by alternately disposing, in the column direction, a first row in which visible light pixels each including a first photoelectric converter that converts visible light into signal charges are arranged adjacent in the row direction and a second row in which infrared light pixels each including a second photoelectric converter that converts infrared light into signal charges are arranged adjacent in the row direction.Type: GrantFiled: May 23, 2019Date of Patent: March 15, 2022Assignee: NUVOTON TECHNOLOGY CORPORATION JAPANInventors: Takashi Kuwahara, Junichi Matsuo, Mitsugu Yoshita
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Patent number: 11243241Abstract: A noise detection circuit includes an open and close switch connected onto a signal line for transmitting a detection signal of an extraneous noise, and the open and close switch is configured so as to be in an off state during a time period when the switching of the conduction state of a solid state switch is performed by a control circuit, whereas the open and close switch is configured so as to be in an on state during a time period when the switching of the conduction state of the solid state switch is not performed. As a result, an extraneous noise occurring irregularly can be detected.Type: GrantFiled: August 30, 2016Date of Patent: February 8, 2022Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Takashi Kuwahara, Yoshihiro Akeboshi
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Publication number: 20220038253Abstract: On the basis of the peak point of the integrated waveform of the reception signal for each one-bit time, a timing of resetting the integrated value of the reception signal for each one-bit time and a timing of determining whether a voltage of the reception signal for each one-bit time is high or low are indicated.Type: ApplicationFiled: October 15, 2021Publication date: February 3, 2022Applicant: Mitsubishi Electric CorporationInventors: Takashi KUWAHARA, Koji SHIBUYA, Tetsu OWADA
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Patent number: 11143312Abstract: An eccentric rotary valve includes valve elements arranged symmetrically around the valve shaft axis, and valve element valve seats and valve body valve seats which are elliptic conical surfaces made of metal. Each valve element has an elliptic spherical surface, an elliptic conical surface, or a completely spherical surface to which one of the valve element valve seats is continuously and steplessly connected. The axes of the valve seats are offset from the valve shaft axis in the valve closing direction such that, when the valve shaft is rotated in the valve opening direction, the valve element valve seats instantly separate from the valve body valve seats. Flow regulating plates are disposed in the valve body between the valve elements to ensure smooth flow of fluid. Ribs are disposed on opposite sides of the valve shaft and forwardly, in the valve opening direction, of the respective valve elements.Type: GrantFiled: February 28, 2020Date of Patent: October 12, 2021Assignee: Kurimoto, Ltd.Inventors: Takashi Kuwahara, Hidemitsu Mamoto
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Publication number: 20210208188Abstract: A noise detection circuit includes an open and close switch connected onto a signal line for transmitting a detection signal of an extraneous noise, and the open and close switch is configured so as to be in an off state during a time period when the switching of the conduction state of a solid state switch is performed by a control circuit, whereas the open and close switch is configured so as to be in an on state during a time period when the switching of the conduction state of the solid state switch is not performed. As a result, an extraneous noise occurring irregularly can be detected.Type: ApplicationFiled: August 30, 2016Publication date: July 8, 2021Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Takashi KUWAHARA, Yoshihiro AKEBOSHI
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Publication number: 20210178819Abstract: A tire includes a spiral belt layer and ring-shaped bands. The spiral belt layer is provided at the outer periphery side of a tire carcass member and is formed by a resin-coated cord wound in a helical shape. The bands are disposed at the tire diameter direction outer side of each of an end portion of the spiral belt layer at one side in the tire width direction and an end portion at the other side. Each band includes a belt-shaped member that is wound at least one full circumference in the tire circumference direction. The band is provided with an overlap portion that is specified with a larger number of layers of the belt-shaped member than other regions of the band in the circumference direction. The overlap portion is disposed at a circumference direction position that does not correspond with length direction end portions of the resin-coated cord.Type: ApplicationFiled: November 22, 2018Publication date: June 17, 2021Inventors: Takashi KUWAHARA, Seigo TSURUDA, Keigo NARITA
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Publication number: 20210104817Abstract: An array antenna device includes a classifying unit that classifies rotating devices into a plurality of groups with different priorities under the condition that the number of rotating devices included in one group is equal to or less than the number of rotating devices that is calculated by a number-of-drivable-devices calculating unit; and a rotation instructing unit that selects groups in descending order of priority from among the plurality of groups and drives, each time one group is selected, all rotating devices included in the group, and the classifying unit performs the classification in such a manner that, among the rotating devices, a rotating device that rotates an element antenna with a higher importance level is classified into a group with a higher priority.Type: ApplicationFiled: December 18, 2020Publication date: April 8, 2021Applicant: Mitsubishi Electric CorporationInventors: Takashi KUWAHARA, Tetsu OWADA, Narihiro NAKAMOTO
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Patent number: 10857839Abstract: A tire 10 has a decoration portion 15 using a paint on a surface of a side portion 12. The decoration portion 15 has a white paint layer 16 formed on at least a part of the decoration portion 15, a color paint layer 17 disposed by laminating on the white paint layer 16 and having a thickness less than the thickness of the white paint layer 16, and a protective layer 18 disposed by laminating on the color paint layer 17 and having the thickness less than the thickness of the white paint layer 16. The elastic modulus of the protective layer is larger than the elastic modulus of the white paint layer and the color paint layer. A thickness of the decoration portion 15 as a whole, including the white paint layer 15, the color paint layer 17 and the protective layer 18, is 150 ?m or less.Type: GrantFiled: April 21, 2014Date of Patent: December 8, 2020Assignee: BRIDGESTONE CORPORATIONInventors: Keita Oshikane, Nobuyuki Hirai, Takashi Kuwahara, Kentaro Mizotani, Yuki Nakamura
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Patent number: 10855332Abstract: The transmission unit includes a digital signal source and a pulse generation circuit. The digital signal source generates a rectangular wave signal. The pulse generation circuit includes a short stub and an open stub, and generates a pulse signal corresponding to the rectangular wave signal. The receiving unit receives the pulse signal from the transmission unit via a lossy transmission path. A comparison circuit having a hysteresis function converts the received pulse signal into a rectangular wave signal.Type: GrantFiled: December 6, 2017Date of Patent: December 1, 2020Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Takashi Kuwahara, Tetsu Owada, Hiroshi Itakura
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Patent number: 10787041Abstract: Provided is a pneumatic tire including, on an outer surface of its sidewall portion, a decorative portion including a print layer and a protective layer located on a tire outer side of the print layer. The decorative portion further includes an intermediate layer located between the print layer and the protective layer. When a storage modulus of the print layer, a storage modulus of the protective layer, and a storage modulus of the intermediate layer are respectively defined as E1?, E2?, and E3?, the following relational expression is satisfied: E2?>E3?>E1?.Type: GrantFiled: July 24, 2015Date of Patent: September 29, 2020Assignee: BRIDGESTONE CORPORATIONInventors: Kentaro Mizotani, Nobuyuki Hirai, Takashi Kuwahara, Yuki Nakamura, Keita Oshikane, Toshio Furutaka, Yasuma Saito, Yukio Sugita
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Publication number: 20200284357Abstract: An eccentric rotary valve includes valve elements arranged symmetric around the valve shaft axis, and valve element valve seats and valve body valve seats which are elliptic conical surfaces made of metal. Each valve element has an elliptic spherical surface, an elliptic conical surface, or a completely spherical surface to which one of the valve element valve seats is continuously and steplessly connected. The axes of the valve seats are offset from the valve shaft axis in the valve closing direction such that, when the valve shaft is rotated in the valve opening direction, the valve element valve seats instantly separate from the valve body valve seats. Flow regulating plates are disposed in the valve body between the valve elements to ensure smooth flow of fluid. Ribs are disposed on opposite sides of the valve shaft and forwardly, in the valve opening direction, of the respective valve elements.Type: ApplicationFiled: February 28, 2020Publication date: September 10, 2020Inventors: Takashi KUWAHARA, Hidemitsu MAMOTO
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Publication number: 20200244307Abstract: The transmission unit (10) includes a digital signal source (11) and a pulse generation circuit (14). The digital signal source (11) generates a rectangular wave signal. The pulse generation circuit (14) includes a short stub (141) and an open stub (142), and generates a pulse signal corresponding to the rectangular wave signal. The receiving unit (30) receives the pulse signal from the transmission unit (10) via a lossy transmission path (20). A comparison circuit (32) having a hysteresis function converts the received pulse signal into a rectangular wave signal.Type: ApplicationFiled: December 6, 2017Publication date: July 30, 2020Applicant: Mitsubishi Electric CorporationInventors: Takashi KUWAHARA, Tetsu OWADA, Hiroshi ITAKURA
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Patent number: 10693505Abstract: A sending unit includes a send data storing unit, a sending-side signal processing unit, and a first DA converter and a second DA converter. A receiving unit includes a first AD converter and a second AD converter, a receiving-side signal processing unit, and a receive data storing unit. The sending-side signal processing unit calculates output signals using a matrix formed of eigenvectors corresponding to transmission eigenmodes in which the signals propagate through a transmission path. The receiving-side signal processing unit calculates data signals of a plurality of sequences by the inverse of the matrix used by the sending-side signal processing unit.Type: GrantFiled: March 21, 2017Date of Patent: June 23, 2020Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Takashi Kuwahara, Yoshihiro Akeboshi
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Patent number: 10603963Abstract: Provided is a pneumatic tire including, on an outer surface of its sidewall portion, a decorative portion including a print layer and inner and outer layers respectively disposed on tire inner and outer sides of the print layer. When storage moduli at 25° C. of the print, inner, and outer layers are respectively defined as E125?, E225?, and E325?, E125?<E225? and E125?<E325? are satisfied. When storage moduli at 80° C. of the print, inner, and outer layers are respectively defined as E180?, E280?, and E380?, and storage modulus variations ?1, ?2, and ?3 at high temperature of the print, inner, and outer layers are respectively defined as ?1=|E125??E180?|/E125?, ?2=|E225??E280?|/E225?, and ?3=|E325??E380?|/E325?, ?1<?2 and ?1<?3, and E225?>E280? and E325?>E380? are satisfied.Type: GrantFiled: July 24, 2015Date of Patent: March 31, 2020Assignee: BRIDGESTONE CORPORATIONInventors: Kentaro Mizotani, Nobuyuki Hirai, Takashi Kuwahara, Yuki Nakamura, Keita Oshikane, Toshio Furutaka, Yasuma Saito, Yukio Sugita
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Publication number: 20200052725Abstract: A sending unit includes a send data storing unit, a sending-side signal processing unit, and a first DA converter and a second DA converter. A receiving unit includes a first AD converter and a second AD converter, a receiving-side signal processing unit, and a receive data storing unit. The sending-side signal processing unit calculates output signals using a matrix formed of eigenvectors corresponding to transmission eigenmodes in which the signals propagate through a transmission path. The receiving-side signal processing unit calculates data signals of a plurality of sequences by the inverse of the matrix used by the sending-side signal processing unit.Type: ApplicationFiled: March 21, 2017Publication date: February 13, 2020Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Takashi KUWAHARA, Yoshihiro AKEBOSHI