Patents by Inventor Naoki Fujiwara

Naoki Fujiwara 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: 20210184535
    Abstract: The present invention provides an electric power unit that is mounted on a mounting object, comprising a motor; and electrical equipment for driving the motor, wherein the motor has a first attachment portion that is attached to the mounting object, and a second attachment portion to which the electrical equipment is attached.
    Type: Application
    Filed: February 25, 2021
    Publication date: June 17, 2021
    Inventors: Hiroshi MIZUGUCHI, Kazuhisa FUJIWARA, Nobuyuki KANEKO, Naoki MATSUNAGA, Toru YUKI, Shota SHIMOTANI, Ayame MURAKAMI
  • Publication number: 20210157210
    Abstract: A semiconductor device includes an electrode which is arranged on an organic material with an insulation film interposed therebetween and which does not easily peel away from the organic material along with the insulation film. An insulation film in a region including pad portions of a phase shift electrode and a modulation electrode has openings at the centers of the pad portions of the phase shift electrode and the modulation electrode, the edge portions of which are formed on the phase shift electrode and the modulation electrode. In this way, the adjoining edges of the phase shift electrode and modulation electrode and the insulation film are all covered by the insulation film so as not to be exposed to the atmosphere.
    Type: Application
    Filed: April 18, 2019
    Publication date: May 27, 2021
    Inventors: Naoki Fujiwara, Yuta Ueda, Takahiko Shindo
  • Publication number: 20210149335
    Abstract: A cartridge mountable to and dismountable from a main assembly of an image forming apparatus includes a memory, a guide configured to guide a portion-to-be-guided provided in the main assembly and to guide a main assembly contact provided in the main assembly to a memory contact of the memory when the cartridge is mounted in the main assembly, and a grip portion. The guide is provided at a bottom of the cartridge when the cartridge is hung by gripping the grip portion and constitutes a part of a supporting portion configured to support the cartridge when the cartridge is placed on a horizontal placement surface. The guide has a chamfered surface formed by being chamfered. When the cartridge is supported at the supporting portion, the chamfered surface opposes the horizontal placement surface, and a surface of the memory contact is inclined with respect to the horizontal placement surface.
    Type: Application
    Filed: January 28, 2021
    Publication date: May 20, 2021
    Inventors: Akihiro Fujiwara, Tadashi Horikawa, Naoki Matsumaru, Ryuta Murakami, Daisuke Makiguichi
  • Publication number: 20210126428
    Abstract: A semiconductor optical device includes an SOI substrate having a waveguide of silicon, and at least one gain region of a group III-V compound semiconductor having an optical gain bonded to the SOI substrate. The waveguide has a bent portion and multiple linear portions extending linearly and connected to each other through the bent portion. The gain region is disposed on each of the multiple linear portions.
    Type: Application
    Filed: October 23, 2020
    Publication date: April 29, 2021
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Naoki FUJIWARA, Hideki YAGI, Hajime SHOJI, Takuo HIRATANI, Takehiko KIKUCHI, Toshiyuki NITTA
  • Publication number: 20210006032
    Abstract: A method for manufacturing a monolithically integrated semiconductor optical integrated element comprising a DFB laser, an EA modulator, and a SOA disposed in a light emitting direction, comprising the step of forming a semiconductor wafer on which the elements are two-dimensionally arrayed and aligned the optical axes; cleaving the semiconductor wafer along a plane orthogonal to the light emitting direction to form a semiconductor bar including a plurality of the elements arranged one-dimensionally along a direction orthogonal to the light emitting direction such that the elements adjacent to each other share an identical cleavage end face as a light emission surface; inspecting the semiconductor bar by driving the SOA and the DFB laser through a connection wiring part together; and separating out the semiconductor bar after the inspection to cut the connection wiring part connecting the electrode of the SOA and the DFB laser to isolate from each other.
    Type: Application
    Filed: February 28, 2019
    Publication date: January 7, 2021
    Inventors: Takahiko Shindo, Naoki Fujiwara, Kimikazu Sano, Hiroyuki Ishii, Hideaki Matsuzaki, Takashi Yamada, Kengo Horikoshi
  • Publication number: 20200400791
    Abstract: A light detection device includes a light projector, a light receiver, a detector, and a controller. The light projector projects light to a predetermined range. The light receiver has a light receiving region in which light is received. The detector detects light by comparing a light reception result by the light receiver with a predetermined threshold. The controller controls the threshold. The controller shifts in turn a range where light is projected from the light projector. The controller, causes the detector to detect light per a portion of the light receiving region, the portion corresponding to a range with light being projected from the light projector, and sets the threshold based on a light reception result by the light receiver in a different portion of the light receiving region from the portion corresponding to the range with light being projected.
    Type: Application
    Filed: March 1, 2019
    Publication date: December 24, 2020
    Inventors: Naoki FUJIWARA, Yuki MATSUI, Kazuo YAMAMOTO
  • Publication number: 20200371525
    Abstract: There is provided an information processing apparatus and an information processing method that can provide more useful information for an action plan of an autonomous mobile body, the information processing apparatus including an action recommendation unit configured to present a recommended action recommended to an autonomous mobile body, to the autonomous mobile body that performs an action plan based on situation estimation. The action recommendation unit determines the recommended action on the basis of an action history collected from a plurality of the autonomous mobile bodies, and on the basis of a situation summary received from a target autonomous mobile body that is a target of recommendation. The information processing method includes presenting, by a processor, a recommended action recommended to an autonomous mobile body, to the autonomous mobile body that performs an action plan based on situation estimation.
    Type: Application
    Filed: July 24, 2018
    Publication date: November 26, 2020
    Applicant: SONY CORPORATION
    Inventors: Tomoo MIZUKAMI, Naoki FUJIWARA, Takuma MORITA
  • Publication number: 20200220357
    Abstract: A photovoltaic power generation system includes a plurality of photovoltaic cell arrays, a plurality of power conditioners connected respectively with the plurality of photovoltaic cell arrays, and a high order device connected to the plurality of power conditioners. The high order device is configured to execute: a first output control to adjust output power of a designated power conditioner to a predetermined output power amount being set in advance; and a second output control to adjust output power from a remaining power conditioner which is other than the designated power conditioner among the plurality of power conditioners. The high order device is configured to execute characteristic-data acquisition to acquire an input/output electrical characteristic of the designated power conditioner during execution of the first output control.
    Type: Application
    Filed: September 19, 2017
    Publication date: July 9, 2020
    Applicant: Toshiba Mitsubishi-Electric Industrial Systems Corporation
    Inventor: Naoki FUJIWARA
  • Publication number: 20200194971
    Abstract: There is provided a semiconductor optical integrated device having a DFB laser, an EA modulator, and an SOA monolithically integrated, and an output light intensity of the semiconductor optical integrated device is maintained constant. The semiconductor optical integrated device includes: a DFB laser; an EA modulator connected to the DFB laser; an SOA monolithically integrated with the DFB laser and the EA modulator on a same substrate and connected to an output end of the EA modulator; and an optical receiver disposed on an output end side of the SOA and having a same composition as the SOA. The optical receiver is configured to monitor change in a detection value according to an intensity of input light to the optical receiver such that drive currents flowing in the DFB laser and the SOA are feedback controlled.
    Type: Application
    Filed: September 12, 2018
    Publication date: June 18, 2020
    Inventors: Takahiko Shindo, Wataru Kobayashi, Naoki Fujiwara, Shigeru Kanazawa
  • Publication number: 20200173921
    Abstract: A light source device includes a light source unit that emits laser light, a condensing lens, and a transmissive fluorescent body. The condensing lens condenses laser light emitted from the light source unit. The transmissive fluorescent body is provided with, inside thereof, a condensing point of laser light condensed by the condensing lens, and emits fluorescent light from a portion through which laser light passes.
    Type: Application
    Filed: February 16, 2018
    Publication date: June 4, 2020
    Applicant: OMRON Corporation
    Inventors: Naoki FUJIWARA, Kazuya KIMURA, Masayuki HAYAKAWA, Masayuki ARAKAWA
  • Patent number: 10596484
    Abstract: A packing has a plurality of sheet materials spaced and arranged in parallel, and liquid flows along the flat surface thereof in a standing use state. Each sheet material has at least one member group including a plurality of support members arranged such that the upper end of the uppermost support member corresponds to the upper end of the sheet material and the lower end of the lowermost support member corresponds to the lower end of the sheet material. Each support member has a pair of support walls parallel to the liquid flow direction and perpendicular to the sheet material surface, and a bridging part connecting the support walls. A sandwiching structure is formed that one sheet material is held by at least one support member attached thereto and at least one support member attached to an adjacent sheet material, and it extends linearly through the plurality of sheet materials.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: March 24, 2020
    Assignee: IHI Corporation
    Inventors: Yoshiyuki Iso, Jian Huang, Mariko Saga, Shinsuke Matsuno, Hiroyuki Uchida, Naoki Fujiwara, Kenji Takano, Kenji Tokuda, Shiko Nakamura
  • Patent number: 10536001
    Abstract: A photovoltaic system includes photovoltaic cells, inverters, a reduced electricity output state determiner which determines whether each of the photovoltaic cells is in a reduced electricity output state, a first command value generator which generates a first command value for decreasing a first power factor of a first inverter determined as in the reduced electricity output state, a second command value generator which generates a second command value for increasing a second power factor of at least one of second inverters so as to compensate for output power of the first inverter, and a controller which controls the inverters.
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: January 14, 2020
    Assignee: Toshiba Mitsubishi-Electric Industrial Systems Corporation
    Inventors: Yuji Matsuoka, Tatsuaki Ambo, Naoki Fujiwara, Paul Bixel, Ryuta Saka
  • Patent number: 10531682
    Abstract: The present invention relates to frozen liquid egg whites in which are admixed 0.01-0.4 parts of egg yolks for every 100 parts of egg whites, wherein 0.1-2 parts inclusive of ?-cyclodextrin are added for every 100 parts of liquid egg whites, and the turbidity H1 (degrees) calculated by means of the belowmentioned formula (1) is 18 or more: H1=H2?H3 . . . (1). Here, H2 indicates the turbidity (degrees) of the frozen liquid egg whites measured immediately after being defrosted, and H3 indicates the egg-derived turbidity y (degrees) calculated by means of the belowmentioned approximation formula (2): y=?380.75x2+272.42x+17.257 . . . (2). Here, x indicates the admixed amount (parts) of egg yolks for every 100 parts of liquid egg whites.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: January 14, 2020
    Assignee: KEWPIE CORPORATION
    Inventors: Naoki Fujiwara, Noriaki Nishijima, Ryou Sasahara, Hideaki Kobayashi, Asao Ito
  • Patent number: 10505343
    Abstract: The present invention provides an optical transmitter and a light intensity monitoring method that provide reliable APC feedback for a semiconductor laser equipped with an SOA. The optical transmitter includes an SOA integrated EA-DFB having a DFB laser, an EA modulator connected to the DFB laser, and an SOA connected to the EA modulator. In the structure of the optical transmitter, a light detector part is disposed forward of the output end side of an SOA part. The light detector part changes part of an output light beam from the SOA part into an electric current and detects light, while guiding the remaining part of the output light beam to a waveguide. With the light detector part disposed forward for the SOA part, it is possible to feed back the output result from the SOA part. Hence, good APC is possible.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: December 10, 2019
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Wataru Kobayashi, Toshio Ito, Naoki Fujiwara
  • Publication number: 20190257946
    Abstract: A target detecting device projects measuring light over a predetermined range in front of a vehicle, receives reflected light from a target, and detects the target or a distance to the target, based on a light reception signal output according to the light reception state. The light projecting unit includes a light emitting element emitting measuring light and light diffusion members. The light diffusion members are provided on an upper end portion and a lower end portion of a light projecting lens constituting part of a light projecting path, and diffuses, in the vertical direction, measuring light emitted from the light emitting element and traveling through the end portions in the vertical direction of the light traveling path while transmitting the measuring light.
    Type: Application
    Filed: February 20, 2019
    Publication date: August 22, 2019
    Applicants: OMRON AUTOMOTIVE ELECTRONICS CO., LTD., Omron Corporation
    Inventors: Keito Ando, Hidenori Miyazaki, Hoshibumi Ichiyanagi, Naoki Fujiwara, Kazuo Yamamoto
  • Patent number: 10355487
    Abstract: A photovoltaic system includes power generators configured to generate power utilizing sunlight, inverters configured to convert the power generated by the power generators into alternating-current power output to a power system, a first limiter configured to limit output power of the inverters not more than a predetermined capacity, a second limiter configured to limit output power of at least one of the inverters to a level exceeding the predetermined capacity limited by the first limiter, when a predetermined condition is satisfied, and an inverter controller configured to control the output power of the inverters, based on the first limiter or the second limiter.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: July 16, 2019
    Assignee: TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION
    Inventors: Takahiro Terazono, Naoki Fujiwara, Yoshio Tsuji, Shuji Tanaka
  • Patent number: 10333280
    Abstract: A configuration of a DFB laser-based wavelength tunable laser is well known, but long resonators have difficulty in forming uniform resonators due to production variations, thereby inducing limitation in narrowing the spectral linewidth in the DFB laser-based wavelength tunable laser as well. In the semiconductor laser device of the present invention, a semiconductor laser that oscillates in a single mode and a low-loss lightwave circuit using SiO2 glass are arranged on the common substrate. The lightwave circuit is configured such that part of output light from the semiconductor laser propagates through a certain length of an optical path, and then is reflected by a reflector and is fed back to the semiconductor laser. Output light from the semiconductor laser and an input waveguide of the lightwave circuit can also be configured to be optically connected directly to each other. The present invention can provide a compact laser device with a narrowed spectral linewidth and stable wavelength controllability.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: June 25, 2019
    Assignees: Nippon Telegraph and Telephone Corporation, Tohoku University
    Inventors: Hiroyuki Ishii, Naoki Fujiwara, Kei Watanabe, Mikitaka Itoh, Keisuke Kasai, Masataka Nakazawa
  • Patent number: 10276863
    Abstract: A composite material including a carbon-containing material and a non-stoichiometric titanium compound shown by a chemical formula of Li4+xTi5?xO12, where x is in a range of 0<x<0.30, the composite material including at least one composite particle that has a core portion including the non-stoichiometric titanium compound and a mixed layer formed on a surface of the core portion, the mixed layer including non-stoichiometric titanium compound and carbon, and having an atomic ratio of titanium and carbon in a range of Ti/C=1/50 or more.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: April 30, 2019
    Assignees: KURARAY CO., LTD., INCORPORATED NATIONAL UNIVERSITY IWATE UNIVERSITY
    Inventors: Takashi Wakui, Naoki Fujiwara, Yuhi Shimazumi, Yoshio Yamamoto, Koichi Ui, Yoshihiro Kadoma
  • Patent number: 10265676
    Abstract: A method of manufacturing packing includes: determining types of a gas and a liquid which are brought into gas-liquid contact and a main plate to be used; calculating a relationship between a contact angle and a liquid film length ratio; determining the arrangement (intervals) of a rib; determining rib conditions; calculating the minimum value of the flow direction length of the rib satisfying the contact angle and a strength requirement; confirming whether or not a liquid film length is greater than the minimum value; and determining the flow direction length of the rib within a range from the minimum value to the liquid film length.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: April 23, 2019
    Assignee: IHI Corporation
    Inventors: Yoshiyuki Iso, Jian Huang, Mariko Saga, Shinsuke Matsuno, Hiroyuki Uchida, Naoki Fujiwara, Kenji Takano, Kenji Tokuda
  • Patent number: 10243664
    Abstract: An optical modulator driver circuit (1) includes an amplifier (50, Q10, Q11, R10-R13), and a current amount adjustment circuit (51) capable of adjusting a current amount of the amplifier (50) in accordance with a desired operation mode. The current amount adjustment circuit (51) includes at least two current sources (IS10) that are individually ON/OFF-controllable in accordance with a binary control signal representing the desired operation mode.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: March 26, 2019
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Munehiko Nagatani, Hideyuki Nosaka, Toshihiro Itoh, Koichi Murata, Hiroyuki Fukuyama, Takashi Saida, Shin Kamei, Hiroshi Yamazaki, Nobuhiro Kikuchi, Hiroshi Koizumi, Masafumi Nogawa, Hiroaki Katsurai, Hiroyuki Uzawa, Tomoyoshi Kataoka, Naoki Fujiwara, Hiroto Kawakami, Kengo Horikoshi, Yves Bouvier, Mikio Yoneyama, Shigeki Aisawa, Masahiro Suzuki