Patents by Inventor Hiroki Fujita

Hiroki 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).

  • Publication number: 20230391705
    Abstract: Provided is a method for producing fluorenone comprising an oxidation step of oxidizing fluorene in the presence of an aliphatic carboxylic acid having 2 to 3 carbon atoms, a metal catalyst, a bromine compound, and oxygen, a solvent removal step of removing the aliphatic carboxylic acid, a heating step at 120 to 350° C., and a distillation step in the order indicated.
    Type: Application
    Filed: October 21, 2021
    Publication date: December 7, 2023
    Inventors: Hiroki SUMI, Yuki WATANABE, Hideaki FUJITA, Goh NAKAMURA, Tatsuyuki KUMANO
  • Patent number: 11837815
    Abstract: A sealing member is attached to a connector opening of an electronic device to seal between an insulating cover of a cable inserted in the connector opening and a main body of the electronic device. The sealing member includes a housing made of an elastic material. The housing includes a first opening, a second opening facing the first opening and located to an inside of the electronic device than the first opening, and an inclined surface having a tapered shape that is tapered inward from the first opening to the second opening. The housing includes a first cylindrical portion forming the inclined surface inside the first cylindrical portion, a second cylindrical portion provided outside the first cylindrical portion, and a gap formed between the first cylindrical portion and the second cylindrical portion. The first cylindrical portion and the second cylindrical portion are connected to each other around the first opening.
    Type: Grant
    Filed: December 4, 2021
    Date of Patent: December 5, 2023
    Inventors: Kazuki Zusho, Shinji Fujita, Hiroki Kamezaki, Hitoshi Nakatani
  • Patent number: 11835719
    Abstract: An optical system includes a light guide member having a light incident surface, a first surface, and a light emergent surface facing the first surface; and a prism provided in the first surface for reflecting light passing inside the light guide member towards the light emergent surface. The light guide member includes a direct optical path, along which the light that has entered the light guide member through the incident surface is directly reflected from the prism and allowed to emerge from the light emergent surface. At least one of the first surface or the light emergent surface includes a luminous intensity distribution control member configured to control a luminous intensity distribution of light to be extracted from the light emergent surface. The luminous intensity distribution control member includes a Fresnel lens.
    Type: Grant
    Filed: October 25, 2021
    Date of Patent: December 5, 2023
    Inventors: Wahei Agemizu, Kazumasa Takata, Masaru Fujita, Tomohisa Sakaguchi, Hiroki Hara, Masaki Amie
  • Publication number: 20230365187
    Abstract: A vehicle control device includes: dual-system control circuits that control power supply to dual-system winding sets of a motor; and dual-system rotation detection circuits. The control circuits calculate an absolute rotation angle of the motor, and, when a power source is turned off, store an absolute rotation angle of the motor at that time. The control circuits start when the power source is turned on and the absolute value of a difference between an absolute rotation angle that was stored when the power source was turned off last time and an absolute rotation angle that is calculated when the power source is turned on this time is equal to or smaller than a given threshold value, regardless of whether an abnormality has occurred in one of the dual-system rotation detection circuits or an abnormality of the dual-system rotation detection circuits is not determinable.
    Type: Application
    Filed: May 2, 2023
    Publication date: November 16, 2023
    Inventors: Kazuma HASEGAWA, Yuji FUJITA, Yuuta KAJISAWA, Yugo NAGASHIMA, Takashi KOUDAI, Masaharu YAMASHITA, Atsushi SATOU, Yosuke YAMASHITA, Kazuaki IIDA, Hiroyuki KATAYAMA, Shintaro TAKAYAMA, Toyohiro HAYASHI, Hiroki TOMIZAWA, Nobuyori NAKAJIMA
  • Patent number: 11815475
    Abstract: The present invention provides a novel method for identifying a molecular structure by a single crystal X-ray analysis. A single crystal that gives an X-ray diffraction spectrum sufficient for determining a structure of a molecule can be efficiently obtained by including a test molecule in a metal complex, and then crystallizing the test-molecule included in the metal complex. By analyzing this single crystal by an X-ray analysis, it is possible to determine a structure of the test molecule without obtaining a single crystal of the test molecule. With the novel method according to the present invention, the structure of a test molecule in a trace amount of a sample can also be determined.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: November 14, 2023
    Inventors: Makoto Fujita, Daishi Fujita, Yuya Domoto, Hiroki Takezawa
  • Publication number: 20230324818
    Abstract: Provided is an electrophotographic photoreceptor having at least a charge transport layer and a protective layer sequentially laminated on a conductive support, wherein the protective layer contains a cured product of a composition containing a charge transport compound having a chain polymerizable functional group; the charge transport layer and the protective layer are continuously laminated with intervening a mixed layer therebetween in which components of both layers of the charge transport layer and the protective layer are compatible; and the mixed layer has a thickness in the range of 0.1 to 1.0 ?m.
    Type: Application
    Filed: March 31, 2023
    Publication date: October 12, 2023
    Inventors: Kazukuni NISHIMURA, Toshiyuki FUJITA, Hiroki TAKAO, Seijiro TAKAHASHI, Tomoko SAKIMURA
  • Patent number: 11781501
    Abstract: To provide an engine head structure for “omission or shortening a fuel pipe that withstands a high pressure”, “simplification or omission of a support bracket for a fuel accumulator and/or a fuel injection device”, “reduction of the number of parts” by devising a fuel accumulator and a support structure therefor, and the like. An engine head structure has a support bracket for mounting a fuel accumulator including a joining portion with a fuel injection device on a cylinder head, is disposed on a side of the fuel injection device or between adjacent fuel injection devices. The support bracket includes a member having a mounting portion on which the fuel accumulator is placed and mounted, a mounting leg portion extending from the mounting portion and mounted on the cylinder head, and an aligning leg portion extending from the mounting portion for positioning the support bracket with respect to the cylinder head.
    Type: Grant
    Filed: March 8, 2021
    Date of Patent: October 10, 2023
    Inventors: Akira Tamura, Kensuke Fujita, Hiroki Oso, Yasushi Kobayashi, Shingo Matsunobu, Mitsugu Okuda
  • Patent number: 11772430
    Abstract: A tire 1 includes a tread portion 2, and how the tire is to be oriented when mounted to a vehicle is specified for the tire. The tread portion 2 has an outer tread edge T1, an inner tread edge T2, a first crown main groove 4, a second crown main groove 5, and three land portions demarcated by the first crown main groove 4 and the second crown main groove 5. The land portions include an outer shoulder land portion 7 demarcated between the outer tread edge T1 and the first crown main groove 4. The outer shoulder land portion 7 has a largest width in a tire axial direction among the three land portions. The outer shoulder land portion 7 has an outer shoulder lateral groove 20 and an outer shoulder sipe 21.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: October 3, 2023
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Hiroki Koike, Masayuki Fujita
  • Publication number: 20230296184
    Abstract: The invention suppresses hysteresis. A relief valve switching between whether to discharge oil through movement of a valve body includes: a first spacing part, in which the valve body moves; a second space part, connected with the first space part and having a diameter smaller than a diameter of the first space part; an elastic body, connected with the valve body; a seal part, disposed in a circumferential direction of the valve body; and a third space part, formed in the first space part.
    Type: Application
    Filed: December 16, 2021
    Publication date: September 21, 2023
    Applicant: MITSUBA Corporation
  • Publication number: 20230287250
    Abstract: A thermosetting composition according to the present disclosure contains: an epoxy resin (A); a thiol compound (B) having at least two thiol groups per molecule; a radical polymerizable compound (C); a photo radical polymerization initiator (D); and a radical scavenger (E).
    Type: Application
    Filed: July 19, 2021
    Publication date: September 14, 2023
    Inventors: Haruka FUJITA, Takashi SARUWATARI, Hiroki SHINOZAKI
  • Publication number: 20230284172
    Abstract: An estimation system estimates the arrangement of objects. The estimation system includes an estimation unit. The estimation unit obtains information related to an arrangement pattern of the objects as first information and obtains, from wireless devices respectively connected to the objects, information including response times between the wireless devices as second information to estimate the arrangement of the objects based on the first information and the second information.
    Type: Application
    Filed: July 21, 2021
    Publication date: September 7, 2023
    Inventors: Hiroshi DOUMAE, Shin HIGASHIYAMA, Takuya HANADA, Hiroki UEDA, Hiroshi NAKAYAMA, Naotoshi FUJITA, Yuusuke ASADA
  • Patent number: 11745960
    Abstract: Whether to permit or prohibit drive of at least one object, out of a slider and a movable linear module, is determined based on position related information on position of the slider or the movable linear module before the drive of the object is started. In this way, in a linear conveyor system for transferring the slider between a plurality of fixed linear modules using the movable linear modules, the occurrence of interference between the linear modules and the slider can be suppressed.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: September 5, 2023
    Inventors: Kenji Ueno, Takayoshi Fujita, Hiroki Hoshina
  • Publication number: 20230258672
    Abstract: This automated analysis device is provided with a plurality of analysis units for analyzing a specimen, a buffer portion which holds a plurality of specimen racks on which are placed specimen containers holding the specimen, a sampler portion which conveys the specimen racks held in the buffer portion to the analysis units, and a control portion which, when performing a process to deliver the specimen racks to the plurality of analysis units, outputs synchronization signals to all the plurality of analysis units, wherein the analysis unit performs a delivery process starting from the synchronization signal, and the analysis unit performs a delivery process starting from the synchronization signal.
    Type: Application
    Filed: April 19, 2023
    Publication date: August 17, 2023
    Inventors: Masashi AKUTSU, Naoto SUZUKI, Hiroki FUJITA, Akihiro YASUI
  • Publication number: 20230245561
    Abstract: A wireless roadside device that performs roadside-to-vehicle communication with an in-vehicle communication device in a traffic communication system includes a roadside-to-vehicle communicator that cyclically transmits a roadside-to-vehicle message, and a controller that performs inhibition control to inhibit cyclic transmission of the roadside-to-vehicle message when the roadside-to-vehicle communicator receives no vehicle information message from the in-vehicle communication device.
    Type: Application
    Filed: April 12, 2023
    Publication date: August 3, 2023
    Applicant: KYOCERA Corporation
    Inventors: Hiroki FUJITA, Takeshi SUZUKI
  • Publication number: 20230202553
    Abstract: A steer-by-wire rudder system includes a first system having a first motor unit that drives a rudder mechanism and a first control unit that controls the first motor unit, and a second system having a second motor unit that drives the rudder mechanism and a second control unit that controls the second motor unit. The first control unit and the second control unit perform cooperative control for controlling the first motor unit and the second control unit to cooperate with each other. When the cooperative control is not performed, one of the control of the first motor unit by the first control unit and the control of the second motor unit by the second control unit continues, and the other thereof stops.
    Type: Application
    Filed: February 22, 2023
    Publication date: June 29, 2023
  • Publication number: 20230193977
    Abstract: A torsional-vibration-reducing-device manufacturing method includes: molding an input rotating member and an output rotating member through punching press machining and bending press machining performed on plate materials; performing heat treatment on the molded input rotating member and the molded output rotating member; and assembling a damper product that includes, as components, the input rotating member and the output rotating member on which heat treatment has been performed, and a coil spring. The molding includes drilling processing for forming a hole opened in an outer-diameter direction with respect to the center line of rotation, at a position of at least one rotating member of the input rotating member and the output rotating member, the position serving as a spring holding section for holding the coil spring. The method further include cleaning the damper product with a cleaning solution and removing the cleaning solution remaining after the cleaning.
    Type: Application
    Filed: May 11, 2021
    Publication date: June 22, 2023
    Inventors: Kiyoshi YAMAMOTO, Takashi FUJITA, Hiroki YANAGISAWA
  • Publication number: 20230193984
    Abstract: A frictional roller reducer having a sun roller; a ring roller; a plurality of intermediate rollers having rolling surfaces coming in rolling contact with the sun roller and the ring roller; the sun roller or the ring roller having a pair of roller elements including inclined surface portions on a circumferential surface coming in rolling with rolling surfaces, the inclined surface portions inclined in directions going toward the intermediate rollers in a radial direction as going away from each other in the axial direction; a pressing device pressing the pair of roller elements in directions going closer to each other, and an elastic member arranged between the pair of roller elements, the elastic member urging the pair of roller elements in directions going away from the rolling surface of the intermediate rollers.
    Type: Application
    Filed: December 3, 2021
    Publication date: June 22, 2023
    Applicant: NSK LTD.
    Inventors: Hiroshi KAWAHARA, Hiroki HASHIGUCHI, Hirofumi ITAGAKI, Azusa HIDAKA, Hiroki NISHIDA, Naofumi FUJITA, Hikari YOSHIMI, Naohiro HITOMI, Masahiro KITA
  • Publication number: 20230183508
    Abstract: An active energy ray curing composition contains a polymerizable monomer having a phosphoric acid ester group and a polyester resin having an unsaturated bond and a number average molecular weight of 3,000 or less.
    Type: Application
    Filed: December 13, 2022
    Publication date: June 15, 2023
    Applicant: Ricoh Company Ltd.
    Inventors: Yuusuke FUJITA, Satoshi Kojima, Hiroki Kobayashi, Yuuki Matsushita, Hikaru Ishii
  • Publication number: 20230165553
    Abstract: An X-ray diagnosis apparatus according to the present embodiment comprises: an X-ray irradiator configured to irradiate X-rays; an imager configured to image an identifier that identifies a position of an X-ray detector which detects X-rays; and processing circuitry configured to calculate, based on the identifier shown on an image imaged by the imager, a relative position of the X-ray irradiator regarding the X-ray detector and an irradiation position of the X-ray irradiator where a corresponding relative position meets a predetermined X-ray imaging condition; and output, based on the relative position and the irradiation position, a movement information of the X-ray irradiator.
    Type: Application
    Filed: November 25, 2022
    Publication date: June 1, 2023
    Inventors: Takehito TOMARU, Haruki IWAI, Naoki YAMADA, Takanori SOUTOME, Takahiro KUROKI, Naoya FUJITA, Hiroki TONOTSUKA
  • Publication number: 20230165992
    Abstract: An x-ray diagnostic apparatus according to an embodiment includes a radiographic unit, a movable unit, and processing circuitry. The radiographic unit performs radiography. The movable unit is provided in the radiographic unit and is movable to plural positions. The processing circuitry moves the movable unit to a position where the movable unit and a disinfection apparatus that performs disinfection have a predetermined positional relation to each other.
    Type: Application
    Filed: November 21, 2022
    Publication date: June 1, 2023
    Inventors: Haruki IWAI, Naoki YAMADA, Hiroki TONOTSUKA, Takehito TOMARU, Naoya FUJITA, Takanori SOUTOME, Takahiro KUROKI