Patents by Inventor Takashi Takeda

Takashi Takeda 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).

  • Patent number: 10407748
    Abstract: A high-carbon steel sheet has a chemical composition represented by, in mass %, C: 0.60% to 0.90%, Mn: 0.30% to 1.50%, and Cr: 0.20% to 1.00%, and others, and has a structure represented by a concentration of Mn contained in cementite: 2% or more and 8% or less, a concentration of Cr contained in cementite: 2% or more and 8% or less, an average grain diameter of ferrite: 10 ?m or more and 50 ?m or less, an average particle diameter of cementite: 0.3 ?m or more and 1.5 ?m or less, and a spheroidized ratio of cementite: 85% or more.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: September 10, 2019
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Kengo Takeda, Toshimasa Tomokiyo, Yasushi Tsukano, Takashi Aramaki
  • Patent number: 10409075
    Abstract: A virtual image display apparatus includes a case member that stores a image element and is provided with a first end connected to other members, an optical component holding member with which an optical component guiding image light from the image element is assembled and that is provided with a second end connected to the first end, three or more protruding portions that are provided at one of the first end and the second end, have protrusion shapes, and extend toward the other end, three or more grooves that are provided at the other end, have depression shapes corresponding to the three or more protruding portions, and extend, and adhesive portions that fix the three or more protruding portions to the three or more grooves in a state in which the case member is aligned with the optical component holding member.
    Type: Grant
    Filed: May 23, 2018
    Date of Patent: September 10, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Masayuki Takagi, Toshiaki Miyao, Takashi Takeda, Akira Komatsu, Takuya Ikeda
  • Patent number: 10409070
    Abstract: A virtual image display apparatus includes an image projection apparatus that emits image light, and a display optical system that forms a virtual image according to the image light from a liquid crystal device (image forming device). The display optical system is configured by at least two members having different refractive indices and bends the image light a plurality of times between mediums having different refractive indices in a predetermined direction. A cumulative value of an index for chromatic dispersion with respect to the predetermined direction on a refractive surface of each bent portion is smaller than or equal to a predetermined reference value.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: September 10, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Akira Komatsu, Masayuki Takagi, Toshiaki Miyao, Takashi Takeda
  • Publication number: 20190271391
    Abstract: In a control device of a vehicle including a first power transmission path transmitting a power through a belt-type continuously variable transmission and a second power transmission path transmitting a power through a reduction gear mechanism in parallel between an input shaft and an output shaft and including a dog clutch in series with the reduction gear mechanism in the second power transmission path, when the dog clutch is in an engagement transition state and a rotational speed change of the output shaft is equal to or greater than a predetermined value, the engagement transition state of the dog clutch is canceled to release the dog clutch.
    Type: Application
    Filed: March 4, 2019
    Publication date: September 5, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroki TAKEDA, Kyohei SUZUMURA, Yoshisuke KAMETANI, Kenji MATSUO, Satoshi KAMIJO, Michio YOSHIDA, Toshio SUZUKI, Makoto SAWADA, Takashi SEO
  • Publication number: 20190270864
    Abstract: An oxygen absorbing agent containing a compound (A) of formula (I): wherein X is a chalcogen atom, R1 and R2 are each any one of an alkyl group which optionally has a substituent, an alkenyl group which optionally has a substituent, an aryl group which optionally has a substituent, and an aralkyl group which optionally has a substituent, R3 and R4 are each any one of a hydrogen atom, an alkyl group which optionally has a substituent, an alkenyl group which optionally has a substituent, an aryl group which optionally has a substituent, and an aralkyl group which optionally has a substituent, and R5 is a polymerizable group; and a transition metal salt (B).
    Type: Application
    Filed: October 25, 2017
    Publication date: September 5, 2019
    Applicant: KURARAY CO., LTD.
    Inventors: Daiki NOGUCHI, Akinobu TAKEDA, Takashi FUKUMOTO
  • Patent number: 10401626
    Abstract: An image display apparatus includes image displaying sections that present displayed images to a user and allow the user to visually recognize outside light, a first light adjusting member that is disposed on an outside-facing side of the image displaying sections and adjusts the transmittance based on outside light incident on the first light adjusting member, and a second light adjusting member that is disposed between the image displaying sections and the first light adjusting member and adjusts the transmittance in accordance with the transmittance of the first light adjusting member.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: September 3, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Masayuki Takagi, Takashi Takeda, Akira Komatsu, Toshiaki Miyao
  • Publication number: 20190265493
    Abstract: A first lens and a second lens are bonded to each other and configured to be short in an optical axis direction. Further, by providing a half mirror in a bonding portion between a convex surface and a concave surface, power is given when folding an optical path, and additionally, by setting a refractive index of the first lens larger than a refractive index of the second lens, an image with a wide angle of view can be formed.
    Type: Application
    Filed: February 25, 2019
    Publication date: August 29, 2019
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Masayuki TAKAGI, Takashi TAKEDA, Akira KOMATSU, Toshiaki MIYAO, Tokito YAMAGUCHI
  • Publication number: 20190265494
    Abstract: A first lens and a second lens are bonded, and each of a light emitting plane and a light incident plane is a flat surface to shorten a configuration in an optical axis direction, and simultaneously, various optical elements such as a transmission/reflection selection member and the like can be mounted on a flat surface portion. Further, by providing a half mirror in a bonding portion between a convex surface and a concave surface to give power in folding an optical path, an image with a wide angle of view can be formed.
    Type: Application
    Filed: February 25, 2019
    Publication date: August 29, 2019
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Masayuki TAKAGI, Takashi TAKEDA, Akira KOMATSU, Toshiaki MIYAO, Tokito YAMAGUCHI
  • Patent number: 10391511
    Abstract: A method for producing a vapor deposition mask capable of satisfying both enhancement in definition and reduction in weight even when a size increased, a method for producing a vapor deposition mask device capable of aligning the vapor deposition mask to a frame with high precision, and a method for producing an organic semiconductor element capable of producing an organic semiconductor element with high definition are provided. A metal mask provided with a slit, and a resin mask that is positioned on a front surface of the metal mask and has openings corresponding to a pattern to be produced by vapor deposition arranged by lengthwise and crosswise in a plurality of rows, are stacked.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: August 27, 2019
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Yoshinori Hirobe, Yutaka Matsumoto, Masato Ushikusa, Toshihiko Takeda, Hiroyuki Nishimura, Katsunari Obata, Takashi Takekoshi
  • Patent number: 10397560
    Abstract: In first and second display devices that are provided in a pair on the left and right sides, image light and external light are superimposed on each other and viewed. In this case, a parallax of an angle (the value of angle) is set by a frame unit functioning as a parallax setting unit tilting principal rays of left and right image light inwardly, and the angle of convergence of an observer is in an appropriate state in the case of viewing the image light.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: August 27, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Toshiaki Miyao, Masayuki Takagi, Akira Komatsu, Takahiro Totani, Takashi Takeda
  • Patent number: 10394028
    Abstract: An apparatus has a see-through configuration that guides picture lights by a light guide device and superimposes lights from the outside world and the picture lights for visual recognition. The light guide device has a light guide prevention structure (light transmission prevention structure) provided in a narrow width shape part having a narrower shape than a surrounding part, and thereby, prevents unintended reflection or the like of lights due to the lights from the outside world and suppresses light guide of the lights toward an observer side.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: August 27, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Masayuki Takagi, Takahiro Totani, Toshiaki Miyao, Takashi Takeda, Akira Komatsu
  • Patent number: 10355499
    Abstract: A battery protection circuit for protecting a secondary battery, the battery protection circuit not having a CPU, includes a non-volatile memory into which characteristics data determining protective characteristics of the battery protection circuit are writable; and a protection operation circuit which performs a protection operation of the secondary battery based on the characteristics data read out of the non-volatile memory.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: July 16, 2019
    Assignee: MITSUMI ELECTRIC CO., LTD.
    Inventors: Takashi Takeda, Ryota Kageyama, Koichi Murano, Junji Takeshita, Takeshi Yamaguchi, Takatoshi Itagaki, Koji Yano
  • Publication number: 20190212562
    Abstract: A display device of the invention includes: an image generation part configured to generate image light; a light guide being configured to guide the image light; and an emitting part configured to cause the image light to emit from the light guide toward an exit pupil, in which the emitting part includes a plurality of half mirrors which are disposed parallel to one another at an interval, each of the plurality of half mirrors being configured to reflect a part of the image light and cause another part of the image light to pass through the half mirror, and in at least one half mirror of the plurality of half mirrors, when Bmax represents a maximum luminance, Bmin represents a minimum luminance, and a luminance ratio R (%) is defined as R=[(Bmax?Bmin)/Bmax]×100, R?30 is satisfied.
    Type: Application
    Filed: January 8, 2019
    Publication date: July 11, 2019
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hayato MATSUKI, Takashi TAKEDA, Shohei YOSHIDA
  • Patent number: 10345597
    Abstract: By forming a hard coat layer on a bonding surface which is a surface of a bonding region between a first base material and a second base material, smoothing is achieved, and as a smoothing assisting treatment before forming the hard coat layer, the surfaces of the base materials are flattened by polishing on the bonding surface or a region corresponding to the bonding surface. By the synergistic effect of smoothing by formation of the hard coat layer and a flattening treatment by polishing as the smoothing assisting treatment, sufficient smoothing is achieved.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: July 9, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Toshiaki Miyao, Masayuki Takagi, Takashi Takeda, Akira Komatsu
  • Publication number: 20190206705
    Abstract: According to one aspect of the technique described herein, there is provided a technique including: a reaction tube defining a processing chamber wherein a substrate is processed; an electrode provided at an outer circumferential surface of the reaction tube and configured to generate plasma in the process chamber; an electrode fixing part configured to fix the electrode thereto; a heater provided at an outer circumferential surface of the electrode fixing part and configured to heat an inside of the reaction tube; and a spacer configured to provide a predetermined gap between the electrode and a surface of the electrode fixing part.
    Type: Application
    Filed: March 6, 2019
    Publication date: July 4, 2019
    Inventors: Tsuyoshi TAKEDA, Tatsuya NISHINO, Takashi YAHATA
  • Patent number: 10338770
    Abstract: A display apparatus includes a display section, an operating point detecting section, a first movement information detecting section configured to detect a direction and an amount of movement from an initial point of an operator's touch of the operating point detecting section to a primary stopping point thereof, a second movement information detecting section configured to detect an amount of movement in a predetermined direction from the primary stopping point to a secondary stopping point, an amount-of-value-change calculating section configured to calculate an amount of numerical value change at each numerical display switch, a switching speed calculating section configured to calculate, from the amount of movement detected by the second movement information detecting section, a switching speed at each numerical display switch, and a display control section allowing the numerical display switch of the display section in the calculated amount of numerical value change at the calculated switching speed.
    Type: Grant
    Filed: January 13, 2015
    Date of Patent: July 2, 2019
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Hideki Takeda, Takashi Namii, Yumi Hirobe
  • Publication number: 20190196199
    Abstract: A light-guiding device according to an aspect of the invention includes an incident section configured to make light incident, a light guide configured to guide the light incident from the incident section, a bonding layer configured to bond the incident section and the light guide, and a reflection member provided on a side surface of the bonding layer.
    Type: Application
    Filed: December 21, 2018
    Publication date: June 27, 2019
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hayato MATSUKI, Shohei YOSHIDA, Takashi TAKEDA
  • Patent number: 10330934
    Abstract: An image relay optical system is provided with an optical coupling member before incidence of image light on a light guide member. Among a first light incident surface, a coupling member reflecting surface, and a first light emitting surface provided in the optical coupling member, the coupling member reflecting surface and the first light emitting surface are curved surfaces. Therefore, a large bright virtual image with reduced aberration can be displayed.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: June 25, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takashi Takeda, Takahiro Totani, Akira Komatsu, Masayuki Takagi, Toshiaki Miyao
  • Patent number: 10317709
    Abstract: An optical modulator that suppresses the chirp due to the mask offset, for example during the phase modulation, and that provides a high waveform quality includes: two RF electrodes for applying one pair of differential signal voltages; at least one fixed potential electrodes for applying a fixed potential; a first conductive semiconductor layer and a second conductive semiconductor layer abutted to the RF electrode or a fixed potential electrode; and a light modulation unit including two optical waveguides branched from one optical waveguide that are arranged along a pn junction unit functioning as a boundary between the first and second conductive semiconductor layers, wherein: the semiconductor layers and the electrode are provided so that the integration amounts of the phase changes caused by the offsets of the positions of the pn junction units in the two optical waveguides from a design value is equal between the two optical waveguides.
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: June 11, 2019
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Ken Tsuzuki, Takashi Saida, Koutaro Takeda, Kentaro Honda
  • Publication number: 20190172503
    Abstract: According to an embodiment, a word line driver includes: a first inverter that is driven by a first power supply voltage and inverts and outputs a decode signal; a second inverter that is driven by a second power supply voltage and inverts and outputs the decode signal; a first PMOS transistor that is controlled to be turned on or off on the basis of an output signal of the second inverter; a first NMOS transistor that is controlled to be turned on or off on the basis of an output signal of the first inverter; and a second PMOS transistor that is provided between a power supply voltage terminal to which the second power supply voltage is supplied and the gate of the first PMOS transistor and is temporarily turned on in synchronization with falling of the decode signal.
    Type: Application
    Filed: October 3, 2018
    Publication date: June 6, 2019
    Inventors: Koichi TAKEDA, Takashi IWASE