Patents by Inventor Tomohiro FUJIKAWA

Tomohiro FUJIKAWA 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: 20210012934
    Abstract: Provided are: a sintered body that forms a rare-earth magnet and is configured in a manner such that the divergence between the orientation angles of the easy axes of magnetization of magnet material particles and the orientation axis angle of the magnet material particles is kept within a prescribed range in an arbitrary micro-section of a magnet cross-section; and a rare-earth sintered magnet. This sintered body for forming a rare-earth magnet has two or more different regions exhibiting an orientation axis angle of at least 20°, given that the orientation axis angle is defined as the highest-frequency orientation angle among the orientation angles of the easy magnetization axes, relative to a pre-set reference line, of a plurality of magnet material particles in a rectangular section at an arbitrary position in a plane including the thickness direction and the widthwise direction.
    Type: Application
    Filed: September 17, 2020
    Publication date: January 14, 2021
    Inventors: Kenichi FUJIKAWA, Takashi YAMAMOTO, Hirofumi EBE, Makoto FUJIHARA, Eiichi IMOTO, Tomohiro OMURE
  • Patent number: 10867729
    Abstract: Provided is a method for producing a sintered body that forms a rare-earth permanent magnet, has a single sintered structure and an arbitrary shape, and has easy magnetization axis orientations of different directions applied to the magnet material particles in a plurality of arbitrary regions. This method forms a three-dimensional first molded article from a composite material formed by mixing a resin material and magnet material particles containing a rare-earth substance. The first molded article is then subjected to a deforming force and a second molded article is formed in which the orientation direction of the easy magnetization axis of the magnet material particles in at least the one section of the horizontal cross-section is changed to a direction which differs from the orientation direction of the first molded article. The second molded article is heated to a sintering temperature and kept at the temperature for a period of time.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: December 15, 2020
    Assignee: NITTO DENKO CORPORATION
    Inventors: Kenichi Fujikawa, Katsuya Kume, Kazuo Ouchi, Toshinobu Hoshino, Masakazu Morimoto, Hirofumi Ono, Katsuyuki Nakabayashi, Miho Yamaguchi, Hiroshi Matsuo, Toshiaki Okuno, Makoto Fujihara, Eiichi Imoto, Hirofumi Ebe, Tomohiro Omure, Izumi Ozeki, Takashi Yamamoto, Yuki Kato, Tomoya Matsuda, Shoichiro Saito
  • Patent number: 10801704
    Abstract: A light emitting device includes a plurality of oblong flexible substrates, each flexible substrate comprising a sheet-shaped base body and a wiring pattern formed on one face of the base body, and each flexible substrate having a plurality of light emitting sections disposed thereon; a plurality of a reflective layers, each reflective layer being disposed at a periphery of a respective light emitting section above a respective flexible substrate; an insulating reflective sheet made of a light reflecting resin, the reflective sheet having a plurality of through holes located such that the light emitting sections and at least a portion of the reflective layers are exposed via the through holes; and a plurality of adhesive members, each adhesive member adhering a respective flexible substrate to the reflective sheet in regions where the reflective layer is not formed.
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: October 13, 2020
    Assignee: NICHIA CORPORATION
    Inventors: Yasuo Fujikawa, Takuya Wasa, Tomohiro Ikeda, Yohei Inayoshi, Motokazu Yamada
  • Publication number: 20200297469
    Abstract: A method for treating spermatozoa of an animal includes: irradiating the spermatozoa with light having wavelengths in a range of 390-420 nm at a fluence effective to increase motility of the spermatozoa by 75% or more.
    Type: Application
    Filed: March 20, 2020
    Publication date: September 24, 2020
    Applicant: NICHIA CORPORATION
    Inventors: Hirofumi NISHIZONO, Yasuo FUJIKAWA, Tomohiro TSURUMOTO
  • Publication number: 20200270566
    Abstract: A method of cultivating algal cells of an algae belonging to a class selected from Chlorophyceae, Euglenophyceae, Bacillariophyceae and Haptophyceae includes: irradiating the algal cells with an artificial light having a ratio of (i) photon flux density in a wavelength range of 520-630 nm to (ii) photosynthetic photon flux density, that is 65% or more; and measuring a condition of the algal cells and/or a condition of an algal cell culture provided by cultivating the algal cells. Irradiation and non-irradiation of the algal cells with the artificial light are switched, or the photon flux density in the wavelength range of 520-630 nm is changed, according to the measured condition of the algal cells and/or the measured condition of the algal cell culture.
    Type: Application
    Filed: February 26, 2020
    Publication date: August 27, 2020
    Applicants: NATIONAL UNIVERSITY CORPORATION KOBE UNIVERSITY, NICHIA CORPORATION
    Inventors: Tomohisa HASUNUMA, Yuichi KATO, Yasuo FUJIKAWA, Tomohiro TSURUMOTO
  • Publication number: 20200001460
    Abstract: A safety device is provided to prevent danger caused by collisions between a moving part of an automatic device and a detection target, and includes a collision detection member, detecting approach or contact of the moving part and the detection target; a moving part control device, accelerating, decelerating or stopping movements of the moving part based on a detection signal from the collision detection member; a dangerous state detection member, setting a danger region where the moving part and the detection target can collide, and detecting whether the moving part or the detection target is located in the danger region; and a collision detection control device, enabling or disabling, based on the detection signal from the dangerous state detection member, the detections of the approach or contact of the moving part and the detection target by the collision detection member.
    Type: Application
    Filed: September 9, 2019
    Publication date: January 2, 2020
    Applicant: Sumitomo Riko Company Limited
    Inventors: Susumu SATO, Tomohiro FUJIKAWA
  • Publication number: 20200003634
    Abstract: Provided is a sensor sheet, a capacitive sensor, and a method for manufacturing sensor sheet with which it is possible to suppress changes in capacitance due to an arrangement state. This sensor sheet (1) includes a pair of electrode layers (1X-4X, 1Y-4Y), constraint layers (32, 42) that regulate the surface-direction expansion and contraction of the electrode layers (1X-4X, 1Y-4Y), a plurality of detection parts (A (1, 1)-A (4, 4)) disposed in portions where the pair of electrode layers (1X-4X, 1Y-4Y) is overlapped when viewed from the lamination direction, and non-detection parts (G) disposed between the plurality of detection parts (A (1, 1)-A (4, 4)). In a no-load state, the constraint layers (32, 42) are disposed in at least some of the plurality of detection parts (A (1, 1)-A (4, 4)), and gaps (g) are partitioned in at least some of the non-detection parts (G).
    Type: Application
    Filed: September 12, 2019
    Publication date: January 2, 2020
    Applicant: Sumitomo Riko Company Limited
    Inventors: Hikaru HAYASHI, Tomohiro FUJIKAWA
  • Publication number: 20190368658
    Abstract: A sensor device is provided which detects approach or in contact of a detection target with a moving part of an automatic device, and comprises a first sensor that detects the detection target at a position away from the moving part, a second sensor that detects the detection target at a position closer to the moving part than the first sensor, and a third sensor that detects the detection target at a position closer to the moving part than the first sensor. The approach of the detection target to the moving part is detected by both the second sensor and the third sensor at a position closer to the moving part than a position that can be detected by the first sensor.
    Type: Application
    Filed: August 16, 2019
    Publication date: December 5, 2019
    Applicant: Sumitomo Riko Company Limited
    Inventors: Susumu SATO, Junya KAWAGUCHI, Tomohiro FUJIKAWA, Shota YAMAMOTO
  • Publication number: 20190368950
    Abstract: Provided is a sensor device having a structure, with which the use of a simple structure enables accurate detection of a worker, etc. approaching or contacting a moving part of an automatic device. This sensor device detects the approach or contact of a detection target with a mobile moving part that is provided in an automatic device. The moving part is provided with a first sensor and second sensor for detecting the approach or contact of the detection target. The first sensor and second sensor have the same detection principle and the detection circuit of the first sensor and the detection circuit of the second sensor have the same structure.
    Type: Application
    Filed: August 16, 2019
    Publication date: December 5, 2019
    Applicant: Sumitomo Riko Company Limited
    Inventors: Junya KAWAGUCHI, Tomohiro FUJIKAWA, Susumu SATO, Shota YAMAMOTO
  • Publication number: 20190257499
    Abstract: A light emitting device includes a plurality of oblong flexible substrates, each flexible substrate comprising a sheet-shaped base body and a wiring pattern formed on one face of the base body, and each flexible substrate having a plurality of light emitting sections disposed thereon; a plurality of a reflective layers, each reflective layer being disposed at a periphery of a respective light emitting section above a respective flexible substrate; an insulating reflective sheet made of a light reflecting resin, the reflective sheet having a plurality of through holes located such that the light emitting sections and at least a portion of the reflective layers are exposed via the through holes; and a plurality of adhesive members, each adhesive member adhering a respective flexible substrate to the reflective sheet in regions where the reflective layer is not formed.
    Type: Application
    Filed: May 2, 2019
    Publication date: August 22, 2019
    Applicant: NICHIA CORPORATION
    Inventors: Yasuo FUJIKAWA, Takuya WASA, Tomohiro IKEDA, Yohei INAYOSHI, Motokazu YAMADA
  • Patent number: 10317442
    Abstract: Provided is a flexible, durable capacitive sensor that achieves high flexibility in designing wiring arrangement. A capacitive sensor includes a dielectric layer and a plurality of electrode units placed on both sides of the dielectric layer in the front-back direction. The electrode unit includes an insulating layer having through holes extending therethrough in the front-rear direction, electrode layers placed on one side of the insulating layer in the front-back direction, and jumper wiring layers placed on the other side of the insulating layer in the front-back direction and electrically connected to the electrode layers through the through holes. The insulating layer has an elongation at break of 60% or more, a tension set of less than 5%, and a volume resistivity of 1.0×1010 ?·cm or more.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: June 11, 2019
    Assignee: SUMITOMO RIKO COMPANY LIMITED
    Inventors: Junya Kawaguchi, Tomohiro Fujikawa, Yutaro Taguchi, Hiroshi Yamada
  • Patent number: 10317050
    Abstract: A light emitting device includes a plurality of oblong flexible substrates, each flexible substrate comprising a sheet-shaped base body and a wiring pattern formed on one face of the base body, and each flexible substrate having a plurality of light emitting sections disposed thereon; a plurality of a reflective layers, each reflective layer being disposed at a periphery of a respective light emitting section above a respective flexible substrate; an insulating reflective sheet made of a light reflecting resin, the reflective sheet having a plurality of through holes located such that the light emitting sections and at least a portion of the reflective layers are exposed via the through holes; and a plurality of adhesive members, each adhesive member adhering a respective flexible substrate to the reflective sheet in regions where the reflective layer is not formed.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: June 11, 2019
    Assignee: NICHIA CORPORATION
    Inventors: Yasuo Fujikawa, Takuya Wasa, Tomohiro Ikeda, Yohei Inayoshi, Motokazu Yamada
  • Publication number: 20190135459
    Abstract: A coupling/uncoupling device includes a columnar member configured by a divided pair of semicircular members, and a pair of coupling members forming a circular holding section that holds the columnar member. The circular holding section includes a circular inner surface section with which an outer circumferential surface of the columnar member is in slide contact, the circular inner surface section being formed from inner circumferential surfaces of a semicircular section in one coupling member and a semicircular section in the other coupling member. The columnar member is configured to be rotatable in both clockwise and counterclockwise directions along the circular inner surface section about a reference position where a contact surface of the pair of coupling members and a dividing surface of the columnar member are flush with each other.
    Type: Application
    Filed: December 27, 2018
    Publication date: May 9, 2019
    Inventors: Shinji BEPPU, Tsumori SATO, Ryota FUJIKAWA, Yoshifumi OKAMOTO, Yuki MOROOKA, Tomohiro TOMARU, Kanata SHIROTORI, Yusuke AKAIKE
  • Publication number: 20190033151
    Abstract: The disclosure provides a resilient coupling device, having an inner shaft member inserted into an outer tube member. The inner shaft member and the outer tube member are resiliently coupled in the radial direction by a main rubber resilient body. The inner shaft member has a tubular portion and is inserted into an inner hole of the tubular portion, the outer tube member has an insertion shaft member extending in the axial direction, and an outer peripheral surface of the insertion shaft member and an inner peripheral surface of the tubular portion are separated from and face one another in the radial direction. A first and second electrodes are respectively provided on the inner peripheral surface of the tubular portion and the outer peripheral surface of the insertion shaft member, to constitute a first sensor detecting an electrical change due to a relative displacement between the first and second electrodes.
    Type: Application
    Filed: October 4, 2018
    Publication date: January 31, 2019
    Applicant: Sumitomo Riko Company Limited
    Inventors: Susumu SATO, Tomohiro FUJIKAWA
  • Publication number: 20180274646
    Abstract: Provided is a flex spline and a strain wave gear device using this flex spline. In this flex spline for a strain wave gear device, a cylindrical part equipped with external teeth is formed by multiple pin members adjacent to each other in the circumferential direction. The periphery of the cylindrical part is partially pressed and expanded toward the outer circumference by a wave generator and the pin members engage internal teeth of a circular spline, and at another portion of the periphery of the cylindrical part the pin members are retained by a retaining device without engaging the internal teeth of the circular spline. In addition, an output member or a securing member is attached to a first pin support member and/or a second pin support member supporting both ends of the pin members.
    Type: Application
    Filed: June 4, 2018
    Publication date: September 27, 2018
    Applicant: Sumitomo Riko Company Limited
    Inventors: Susumu SATO, Tomohiro FUJIKAWA
  • Publication number: 20180224346
    Abstract: A sensor sheet and a capacitance-type sensor are provided in which the proportion of a dead area to the entire sensor body is small and detection units that are incapable of detection do not tend to be formed after being cut. A sensor sheet includes a pressure sensing area in which a plurality of detection units are set, and a dead area that is disposed adjacent to the pressure sensing area in a planar direction and that has a take-out portion. A front-side detection path that passes by way of front-side jumper wiring layers and a back-side detection path that passes by way of back-side jumper wiring layers are set between the detection units and the take-out portion. The sensor sheet is cuttable while securing a sensor body that has at least one detection unit, the take-out portion, and the front-side detection path and the back-side detection path for the detection unit.
    Type: Application
    Filed: March 30, 2018
    Publication date: August 9, 2018
    Applicant: Sumitomo Riko Company Limited
    Inventors: Junya KAWAGUCHI, Hiroshi YAMADA, Tomohiro FUJIKAWA, Hikaru HAYASHI
  • Publication number: 20170315165
    Abstract: Provided is a flexible, durable capacitive sensor that achieves high flexibility in designing wiring arrangement. A capacitive sensor includes a dielectric layer and a plurality of electrode units placed on both sides of the dielectric layer in the front-back direction. The electrode unit includes an insulating layer having through holes extending therethrough in the front-rear direction, electrode layers placed on one side of the insulating layer in the front-back direction, and jumper wiring layers placed on the other side of the insulating layer in the front-back direction and electrically connected to the electrode layers through the through holes. The insulating layer has an elongation at break of 60% or more, a tension set of less than 5%, and a volume resistivity of 1.0×1010 ?·cm or more.
    Type: Application
    Filed: July 18, 2017
    Publication date: November 2, 2017
    Applicant: Sumitomo Riko Company Limited
    Inventors: Junya KAWAGUCHI, Tomohiro FUJIKAWA, Yutaro TAGUCHI, Hiroshi YAMADA