Patents by Inventor Masayuki Maeda
Masayuki Maeda 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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Publication number: 20240135962Abstract: According to one embodiment, a magnetic head includes first and second magnetic poles, a conductive part, an element part, and first to fourth terminals. The conductive part is electrically insulated from the first and second magnetic poles. The first and second terminals are electrically connected to the conductive part. The element part is provided between the first and second magnetic poles and electrically connected to the first and second magnetic poles. The element part is conductive. The third terminal is electrically connected to the first magnetic pole. The fourth terminal is electrically connected to the second magnetic pole. A first magnetic pole temperature in a first state is higher than a second magnetic pole temperature of the second magnetic pole in the first state. A first current is supplied between the first and second terminals in the first state.Type: ApplicationFiled: July 24, 2023Publication date: April 25, 2024Inventors: Yuji NAKAGAWA, Naoyuki NARITA, Tomoyuki MAEDA, Masayuki TAKAGISHI, Tazumi NAGASAWA, Ryo OSAMURA, Kosuke KURIHARA
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Publication number: 20240116841Abstract: One aspect of the present invention relates to a dinaphthyl ether compound represented by formula (1): in the formula (1), R1 and R2 are the same or different and each represent a linear or branched hydrocarbon group having 6 to 32 carbon atoms; m and n are each a real number of 0 or more and satisfy 1.0?m+n?3.0.Type: ApplicationFiled: February 9, 2022Publication date: April 11, 2024Applicant: MORESCO CORPORATIONInventors: Tatsuya MAEDA, Mayumi HAYASHI, Kohei YAMASHITA, Masayuki HATA
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Publication number: 20240117265Abstract: One aspect of the present invention relates to a naphthyl phenyl ether compound represented by formula (1): in the formula (1), R1 and R2 are the same or different and each represent a linear or branched hydrocarbon group having 6 to 28 carbon atoms; m and n are each a real number of 0 or more and satisfy 1.0?m+n?3.0.Type: ApplicationFiled: February 9, 2022Publication date: April 11, 2024Applicant: MORESCO CORPORATIONInventors: Tatsuya MAEDA, Mayumi HAYASHI, Kohei YAMASHITA, Masayuki HATA
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Patent number: 11935568Abstract: According to one embodiment, a magnetic recording device includes a magnetic head and a controller. The magnetic head includes first and second magnetic poles, a magnetic element provided between the first magnetic pole and the second magnetic pole, first and second terminals electrically connected to one end and another end of the magnetic element, respectively, and a coil. The controller is electrically connected to the magnetic element and the coil, and performs a recording operation. In the recording operation, the controller supplies a recording current to the coil while applying an element voltage between the first and second terminals. When the applied voltage is changed while the recording current is supplied, a differential resistance of the magnetic element becomes a first differential resistance peak when the applied voltage is a first voltage, and becomes a second differential resistance peak when the applied voltage is a second voltage.Type: GrantFiled: February 3, 2023Date of Patent: March 19, 2024Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATIONInventors: Yuji Nakagawa, Naoyuki Narita, Masayuki Takagishi, Tomoyuki Maeda
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Patent number: 11929332Abstract: A semiconductor device includes a semiconductor chip having a first face and a second face on an opposite side to the first face, and including semiconductor elements arranged on the first face. Columnar electrodes are arranged above the first face, and electrically connected to any of the semiconductor elements. A first member is located around the columnar electrodes above the first face. An insulant covers the columnar electrodes and the first member. The first member is harder than the columnar electrodes and the insulant. The first member and the columnar electrodes are exposed from a surface of the insulant.Type: GrantFiled: March 2, 2021Date of Patent: March 12, 2024Assignee: Kioxia CorporationInventors: Soichi Homma, Tatsuo Migita, Masayuki Miura, Takeori Maeda, Kazuhiro Kato, Susumu Yamamoto
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Publication number: 20240073787Abstract: A closed subscriber group (CSG) cell allows use of subscribers. To receive the service by the CSG cell, a CSG-ID is notified to a user equipment, but cannot be obtained outside the reach of radio waves from a non-CSG cell. Base stations respectively provided to a CSG cell and a non-CSG cell, and access is made to the CSG cell with the use of a CSG-ID issued when use of the CSG cell is allowed, the base station refers to the notified identification information of a user equipment and then transmits a tracking area update request from the user equipment to a core network. The core network determines whether the user equipment is allowed to use the CSG cell and, if allowed, transmits a signal for assignment of radio resources to the user equipment and the CSG-ID. The user equipment accesses the CSG cell with the CSG-ID.Type: ApplicationFiled: November 9, 2023Publication date: February 29, 2024Applicant: Mitsubishi Electric CorporationInventors: Miho MAEDA, Mitsuru MOCHIZUKI, Taiga SAEGUSA, Yasushi IWANE, Yuji KAKEHI, Masayuki NAKAZAWA, Taisei SUEMITSU
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Publication number: 20230366781Abstract: A detection method for detecting a state of a bearing device including an outer member, an inner member, and a plurality of rolling elements, the detection method including: applying an alternating current voltage to an electric circuit including the outer member, the rolling element, and the inner member while a predetermined load is applied to the bearing device; measuring an impedance and a phase angle of the electric circuit applied with the alternating current voltage; and deriving an oil film thickness and a metal contact ratio between the inner member and the plurality of rolling elements or between the inner member and at least one of the plurality of rolling elements based on the impedance and the phase angle.Type: ApplicationFiled: May 31, 2021Publication date: November 16, 2023Applicant: NSK LTD.Inventors: Taisuke MARUYAMA, Suguru SUGAWARA, Masayuki MAEDA
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Patent number: 11767488Abstract: The rolling bearing of the present invention is lubricated with a lubricant composition which contains a fatty acid metal salt, a metal dithiocarbamate, a phosphorous-type additive, and a basic additive, and which has a total acid value of 3.7 mgKOH/g or more. The rolling bearing makes it possible to further improve anti-fretting performance, and to reduce a decrease in fretting resistance even when used under the circumstance that fluorine-type grease penetrates into the bearing using urea-type grease.Type: GrantFiled: December 21, 2018Date of Patent: September 26, 2023Assignee: NSK LTD.Inventors: Taisuke Maruyama, Yujiro Toda, Eri Watabe, Suguru Sugawara, Masayuki Maeda
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Patent number: 11643615Abstract: A lubricant composition according to the present invention contains a fatty acid metal salt, a metal dithiocarbamate, and an additive having an effect of increasing an acid value of the lubricant composition, whereby fretting resistance performances are further improved.Type: GrantFiled: December 21, 2018Date of Patent: May 9, 2023Assignee: NSK LTD.Inventors: Taisuke Maruyama, Yujiro Toda, Eri Watabe, Suguru Sugawara, Masayuki Maeda
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Patent number: 11592556Abstract: An object capturing device includes light emission, receiving, and scanning units, and distance calculation, and object determination units. The scanning unit measures light from the emission unit to head toward a measurement target space to perform scanning, and to guide reflected light from the object with respect to the measurement light to the receiving unit. The distance calculation unit calculates a distance to the object in association with a scanning angle of the scanning unit. The object determination unit determines whether the object is a capture target based on whether a scanning angle range within which a difference between distances is equal to or less than a predetermined threshold value corresponding to a reference scanning angle range of the capture target, and a determination of whether intensity distribution of the reflected light within the scanning angle range corresponds to reference intensity distribution of the reflected light from the capture target.Type: GrantFiled: February 8, 2018Date of Patent: February 28, 2023Assignee: HOKUYO AUTOMATIC CO., LTD.Inventors: Toshihiro Mori, Akihito Yamamoto, Masayuki Maeda, Takahiro Kasahara
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Publication number: 20230004239Abstract: An electronic pen includes a central rod including an axis portion and a pen tip portion, the axis portion having a rod-shaped body and one or more grooves defined along a circumference of a side surface on one end side of the rod-shaped body, and the pen tip portion including a hole into which the one end side of the axis portion is plugged and including one or more protrusions defined on an inner wall surface of the hole, wherein the one or more protrusions are to be fitted to the one or more grooves of the axis portion. The electronic pen includes a casing that is a cylindrical body, that includes an opening at one end, and that includes an installation portion for the central rod inside. When a rear end side of the central rod is inserted into the opening of the casing and installed on the installation portion, at least one of the one or more grooves of the axis portion of the central rod are positioned outside the opening of the casing.Type: ApplicationFiled: April 28, 2022Publication date: January 5, 2023Inventors: Masayuki MAEDA, Tomohiro KAMAI
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Publication number: 20220074813Abstract: A method for diagnosing a rolling device (10) including an outer member (1), an inner member (3), and rolling elements (5) includes: applying an AC voltage to an electric circuit including the outer member (1), the rolling elements (5), and the inner member (3); measuring an impedance and a phase angle of the electric circuit when the AC voltage is applied; and measuring a dielectric constant of a lubricant at least one of between the outer member (1) and the rolling elements (5) and between the inner member (3) and the rolling elements (5) based on the measured impedance and the measured phase angle.Type: ApplicationFiled: January 10, 2020Publication date: March 10, 2022Applicant: NSK LTD,Inventors: Taisuke MARUYAMA, Masayuki MAEDA, Ken NAKANO
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Patent number: 10823828Abstract: An object capturing device configured to capture an object present in a measurement target space includes a light emission unit, a light receiving unit, a light scanning unit configured to cause measurement light emitted at a predetermined wavelength from the light emission unit to head toward a measurement target space to perform scanning, and to guide reflected light from an object present in the measurement target space with respect to the measurement light to the light receiving unit, and a polarization filter disposed in the light scanning unit, the polarization filter including a polarizer configured to allow only light vibrating in a first direction in the measurement light to transmit, and an analyzer configured to allow only light vibrating in a second direction perpendicular to the first direction in the reflected light to transmit.Type: GrantFiled: February 8, 2018Date of Patent: November 3, 2020Assignee: HOKUYO AUTOMATIC CO., LTD.Inventors: Toshihiro Mori, Akihito Yamamoto, Masayuki Maeda, Takahiro Kasahara
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Publication number: 20200248097Abstract: A lubricant composition according to the present invention contains a fatty acid metal salt, a metal dithiocarbamate, and an additive having an effect of increasing an acid value of the lubricant composition, whereby fretting resistance performances are further improved.Type: ApplicationFiled: December 21, 2018Publication date: August 6, 2020Applicant: NSK LTD.Inventors: Taisuke MARUYAMA, Yujiro TODA, Eri WATABE, Suguru SUGAWARA, Masayuki MAEDA
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Publication number: 20200248096Abstract: The rolling bearing of the present invention is lubricated with a lubricant composition which contains a fatty acid metal salt, a metal dithiocarbamate, a phosphorous-type additive, and a basic additive, and which has a total acid value of 3.7 mgKOH/g or more. The rolling bearing makes it possible to further improve anti-fretting performance, and to reduce a decrease in fretting resistance even when used under the circumstance that fluorine-type grease penetrates into the bearing using urea-type grease.Type: ApplicationFiled: December 21, 2018Publication date: August 6, 2020Applicant: NSK LTD.Inventors: Taisuke MARUYAMA, Yujiro TODA, Eri WATABE, Suguru SUGAWARA, Masayuki MAEDA
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Patent number: 10708449Abstract: An information processing system includes a terminal device and an information processing device.Type: GrantFiled: May 17, 2018Date of Patent: July 7, 2020Assignee: Oki Data CorporationInventors: Masayuki Maeda, Osamu Iijima
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Publication number: 20190391245Abstract: An object capturing device configured to capture an object present in a measurement target space includes a light emission unit, a light receiving unit, a light scanning unit configured to cause measurement light emitted at a predetermined wavelength from the light emission unit to head toward a measurement target space to perform scanning, and to guide reflected light from an object present in the measurement target space with respect to the measurement light to the light receiving unit, and a polarization filter disposed in the light scanning unit, the polarization filter including a polarizer configured to allow only light vibrating in a first direction in the measurement light to transmit, and an analyzer configured to allow only light vibrating in a second direction perpendicular to the first direction in the reflected light to transmit.Type: ApplicationFiled: February 8, 2018Publication date: December 26, 2019Applicant: HOKUYO AUTOMATIC CO., LTD.Inventors: Toshihiro MORI, Akihito YAMAMOTO, Masayuki MAEDA, Takahiro KASAHARA
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Publication number: 20190383939Abstract: An object capturing device includes light emission, receiving, and scanning units, and distance calculation, and object determination units. The scanning unit measures light from the emission unit to head toward a measurement target space to perform scanning, and to guide reflected light from the object with respect to the measurement light to the receiving unit. The distance calculation unit calculates a distance to the object in association with a scanning angle of the scanning unit. The object determination unit determines whether the object is a capture target based on whether a scanning angle range within which a difference between distances is equal to or less than a predetermined threshold value corresponding to a reference scanning angle range of the capture target, and a determination of whether intensity distribution of the reflected light within the scanning angle range corresponds to reference intensity distribution of the reflected light from the capture target.Type: ApplicationFiled: February 8, 2018Publication date: December 19, 2019Applicant: HOKUYO AUTOMATIC CO., LTD.Inventors: Toshihiro MORI, Akihito YAMAMOTO, Masayuki MAEDA, Takahiro KASAHARA
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Publication number: 20190379255Abstract: A motor includes a shaft along a central axis, an inner ring fixed on an outer circumferential surface of the shaft, a tubular sleeve extending axially around the shaft, an outer ring fixed to an inner circumferential surface of the sleeve via an adhesive agent, a cap annularly expanding around the shaft and covering an axially upper side of the inner and outer rings, and a bearing portion including dynamic pressure grooves in at least one of an outer circumferential surface of the inner ring and the inner circumferential surface of the sleeve. In the bearing portion, a stationary portion and a rotating portion face each other across a gap where lubricating oil is present. At least one interface of the lubricating oil is in a radial gap between the inner and outer rings. The cap includes a recess recessed axially downward over an entire circumference. At least a portion of an outer circumferential surface of the recess portion is fixed by press-fitting to an inner circumferential surface of the sleeve.Type: ApplicationFiled: June 5, 2019Publication date: December 12, 2019Inventors: Daisuke MORO, Tomohiro YONEDA, Hiroshi KOBAYASHI, Masayuki MAEDA
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Patent number: 10440202Abstract: A Multifunction Peripheral (MFP) that communicates with a mobile terminal changes information to be transmitted to the mobile terminal according to the status of the MFP if the mobile terminal is within a predetermined range from the MFP.Type: GrantFiled: September 19, 2017Date of Patent: October 8, 2019Assignee: Oki Data CorporationInventor: Masayuki Maeda