Patents by Inventor Keisuke Kojima

Keisuke Kojima 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: 10597491
    Abstract: A complex that includes a metal fine particle dispersant including a branched polymer compound having an ammonium group and having a weight average molecular weight of 500 to 5,000,000; and a metal fine particle, wherein the metal fine particle includes platinum (Pt) or palladium (Pd), the metal fine particle dispersant includes a branched polymer compound of Formula (1):
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: March 24, 2020
    Assignees: NISSAN CHEMICAL CORPORATION, KYUSHU UNIVERSITY
    Inventors: Keisuke Kojima, Akihiro Tanaka, Keisuke Odoi, Hideo Nagashima, Takashi Sue
  • Publication number: 20200081188
    Abstract: A photonic device for splitting optical beams includes an input port configured to receive an input beam having an input power, a power splitter including perturbation segments arranged in a first region and a second region of a guide material having a first refractive index, each segment having a second refractive index, wherein the first region is configured to split the input beam into a first beam and a second beam, wherein and the second region is configured to separately guide the first and second beams, wherein the first refractive index is greater than the second refractive index, and output ports including first and second output ports connected the power splitter to respectively receive and transmit the first and second beams.
    Type: Application
    Filed: December 10, 2018
    Publication date: March 12, 2020
    Applicant: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Keisuke Kojima, Mohammad hossein Taher sima, Toshiaki Koike-Akino
  • Patent number: 10583460
    Abstract: Provided is a method for forming a multilayer coating film giving excellent low temperature impact resistance to a substrate that comprises a metal material and a plastic material. The method for forming a multilayer coating film comprises sequential steps of forming an uncured primer coating film, an uncured first colored coating film, an uncured second colored coating film and an uncured clear coating film on a substrate; and heating the same so as to simultaneously cure these 4 coating films, wherein the aqueous first colored paint and aqueous second colored paint are each a 1-package type paint composition containing a specific hydroxyl group-containing resin and a specific blocked polyisocyanate compound.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: March 10, 2020
    Assignee: KANSAI PAINT CO., LTD.
    Inventors: Takashi Nakayabu, Kazushi Konishi, Kohei Onishi, Masuo Kondo, Keisuke Kojima
  • Patent number: 10577382
    Abstract: Provided is a compound represented by the following formula, or a salt thereof: [wherein each symbol is as defined herein].
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: March 3, 2020
    Assignee: TAKEDA PHARMACEUTICAL COMPANY LIMITED
    Inventors: Youichi Kawakita, Takuto Kojima, Noriyuki Nii, Yoshiteru Ito, Nobuki Sakauchi, Hiroshi Banno, Xin Liu, Koji Ono, Keisuke Imamura, Shinichi Imamura
  • Patent number: 10554309
    Abstract: A method decodes an optical signal transmitted over an optical channel from a transmitter to a receiver. The method produces, from the transmitted optical signal, a digital signal including received data symbols and received pilot symbols and determines phase noise on the pilot symbols using a statistical probability distribution of phase noise on the optical channel and errors between phases of the received pilot symbols and the transmitted pilot signals. The method estimates phase noise on the data symbols using an interpolation of the phase noise on the pilot symbols and compensates the digital signal with the phase noise on the data symbols to produce a filtered signal with an equalized phase. The method demodulates and decodes the filtered signal to produce an estimate of the transmitted optical signal.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: February 4, 2020
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: David Millar, Milutin Pajovic, Toshiaki Koike-Akino, Keisuke Kojima, Kieran Parsons
  • Patent number: 10541711
    Abstract: A communication system transmits an input block of bits over a communication channel using a prefix tree that maps a dyadic distribution of compositions of output symbols to prefixes of variable lengths. A path to each leaf of the prefix tree is defined by a prefix formed by a unique sequence of binary values of a length equal to a depth of the leaf. Each leaf is associated with a composition that has at least a number of unique permutations equals to two in a power of a length of a suffix of the block of input bits. The system selects a composition identified in the prefix tree by a prefix in the input block of bits, permutes the selected composition according to a suffix in the input block of bits, and transmits the permuted composition over a communication channel.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: January 21, 2020
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: David Millar, Tobias Fehenberger, Toshiaki Koike-Akino, Keisuke Kojima, Kieran Parsons
  • Publication number: 20200010698
    Abstract: A method for forming a multilayer coating film is provided. The method includes coating at least one object with an aqueous primer coating composition, an aqueous first colored coating composition, an aqueous second colored coating composition, and a clear coating composition, in that order. The aqueous primer coating composition contains a component (A) which contains a polyolefin resin, a component (B) which contains a polyurethane resin, a curing agent (C) and electrically conductive carbon (D). The aqueous first colored coating composition and aqueous second colored coating composition each contain a core/shell emulsion. The clear coating composition contains a hydroxyl group-containing acrylic resin, a polyisocyanate and a melamine resin. The method improves the appearance, chipping resistance, adhesive properties and low temperature impact properties of a coating film.
    Type: Application
    Filed: March 12, 2018
    Publication date: January 9, 2020
    Inventors: Toru Kurashina, Kazuhiko Shinmura, Takeshi Tsunoda, Masuo Kondo, Keisuke Kojima
  • Patent number: 10516503
    Abstract: A communication system includes a data source to receive a block of bits, a processor, a memory, in connection with the processor, to store a distribution matcher associated with a probability mass function (PMF) configured to match a block of equally likely input bits to a fixed number of output bits with values distributed according to the PMF of the distribution matcher using the processor. In this case, the distribution matcher contains a set of parallel binary distribution matchers which specify fully a target PMF, and a transmitter front end to transmit a block of shaped bits over a communication channel, such that bits in a sequence of the blocks of shaped bits are distributed according to the target PMF.
    Type: Grant
    Filed: February 20, 2019
    Date of Patent: December 24, 2019
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: David Millar, Tobias Fehenberger, Toshiaki Koike-Akino, Kieran Parsons, Keisuke Kojima
  • Publication number: 20190359771
    Abstract: A complex that includes a metal fine particle dispersant including a branched polymer compound having an ammonium group and having a weight average molecular weight of 500 to 5,000,000; and a metal fine particle, wherein the metal fine particle includes platinum (Pt) or palladium (Pd), the metal fine particle dispersant includes a branched polymer compound of Formula (1):
    Type: Application
    Filed: August 6, 2019
    Publication date: November 28, 2019
    Inventors: Keisuke KOJIMA, Akihiro TANAKA, Keisuke ODOI, Hideo NAGASHIMA, Takashi SUE
  • Publication number: 20190339584
    Abstract: An optical ring circuit for modulating light from a light source into an optical signal includes a ring modulator located near a waveguide to couple a light propagating the waveguide, the ring modulator including a pair of electrodes, a signal generator to transmit an electrical signal corresponding to the optical signal, a filter circuit to generate an output signal, wherein the filter circuit includes an adder unit and at least one tap unit having a delay unit and a coefficient unit, wherein the adder unit adds the electrical signal from the signal generator and a signal passed from the tap unit for pre-compensating signal components of the electrical signal by at least twice delay time of the delay unit, and a driver circuit to apply a voltage to the electrodes based on the output signal.
    Type: Application
    Filed: September 7, 2018
    Publication date: November 7, 2019
    Inventors: Keisuke Kojima, Min Teng, Toshiaki Koike-Akino, Chungwei Lin, Kieran Parsons, Mitsunobu Gotoda, Koichi Akiyama
  • Patent number: 10459361
    Abstract: An image forming apparatus includes a voltage adjustment portion having a voltage adjustment member connected to a contact member contacting an endless belt, the voltage adjustment portion changing a current flowing from a current supply member contacting the belt at a position different from a position, at which an image bearing member contacts the belt with respect to a rotating direction of the belt, to the voltage adjustment member via the belt according to a control signal input from a control portion outputting a control signal, thereby changing a size of a transfer potential to transfer a toner image borne by the image bearing member onto the belt at a part at which the belt contacts the image bearing member.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: October 29, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Seiji Saito, Keisuke Ishizumi, Toshihiko Takayama, Masaru Ohno, Shingo Ito, Shohei Ishio, Keisuke Samejima, Keizo Kojima, Ryo Matsumura
  • Publication number: 20190302656
    Abstract: A detection unit executes correction control of an image formation condition on a basis of a detection result of reflected light when infrared light is radiated to a test patch, which is transferred from a photosensitive drum to an intermediate transfer belt, and the intermediate transfer belt, wherein the intermediate transfer belt has a base layer which is thickest among a plurality of layers forming the intermediate transfer belt in a thickness direction of the intermediate transfer belt and to which an ion conductive agent is added, and an inner surface layer which has a light transmittance lower than that of the base layer.
    Type: Application
    Filed: March 26, 2019
    Publication date: October 3, 2019
    Inventors: Keisuke Ishizumi, Shohei Ishio, Takayuki Tanaka, Hiroomi Kojima
  • Patent number: 10431830
    Abstract: A current collector for a battery includes: a layer (1) formed from an electrically conductive material and at least one of (a) a polymer compound having an alicyclic structure, (b) a saturated hydrocarbon polymer compound having a hydroxyl group, (c) a phenoxy resin and an epoxy resin, and (d) an amine having an amine equivalent of 120 g/eq or less and an epoxy resin; a layer (2) which is formed on at least one surface of the layer (1); and a layer (3) formed from an electrically conductive material. The current collector for a battery has stability to an equilibrium potential environment in a negative electrode, a low electric resistance, a blocking property to solvent in electrolytic solution, and a blocking property to a component in an electrolyte. In addition, the current collector for a battery has a high capacity retention rate, and battery durability is improved.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: October 1, 2019
    Assignees: KANEKA CORPORATION, NISSAN MOTOR CO., LTD.
    Inventors: Satoshi Oku, Yusuke Kato, Akiko Waki, Takashi Kikuchi, Takashi Ito, Masahiro Kojima, Gentaro Kano, Shiho Inoue, Yasuyuki Tanaka, Norihisa Waki, Yuji Muroya, Kazuki Miyatake, Yoshio Shimoida, Keisuke Wakabayashi, Tomohisa Matsuno, Seiji Ishimoto
  • Patent number: 10368824
    Abstract: This X-ray CT device uses iterative reconstruction to obtain a CT image with the desired noise reduction or X-ray reduction ratio. An iterative approximation reconstruction unit (136) is provided which, from measured projection data obtained by an X-ray detection unit of the X-ray CT device, iteratively reconstructs a CT image in a reconstruction range of a subject, and iteratively corrects the CT image such that calculated projection data, calculated through forward projection of a CT image, is the same as the difference between measured projection data detected by the X-raw detection unit and calculated projection data. The iterative approximation reconstruction unit is provided with a parameter determination unit (151), an iterative correction unit (152), and a table unit (153) which calculates in advance the relation between each parameter used in the iterative reconstruction, and noise reduction or X-ray reduction ratio in the CT image.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: August 6, 2019
    Assignee: HITACHI, LTD.
    Inventors: Keisuke Yamakawa, Shinichi Kojima
  • Publication number: 20190222321
    Abstract: A method decodes an optical signal transmitted over an optical channel from a transmitter to a receiver. The method produces, from the transmitted optical signal, a digital signal including received data symbols and received pilot symbols and determines phase noise on the pilot symbols using a statistical probability distribution of phase noise on the optical channel and errors between phases of the received pilot symbols and the transmitted pilot signals. The method estimates phase noise on the data symbols using an interpolation of the phase noise on the pilot symbols and compensates the digital signal with the phase noise on the data symbols to produce a filtered signal with an equalized phase. The method demodulates and decodes the filtered signal to produce an estimate of the transmitted optical signal.
    Type: Application
    Filed: January 18, 2018
    Publication date: July 18, 2019
    Inventors: David Millar, Milutin Pajovic, Toshiaki Koike-Akino, Keisuke Kojima, Kieran Parsons
  • Patent number: 10320486
    Abstract: An encoder for generating an optical data code from a symbol performs a symbol mapping and an encoding, wherein the symbol mapping performs providing a first constellation format having first and second amplitude rings with circular grids corresponding to phase angles, providing a second constellation format having the first and second amplitude rings with the circular grids corresponding to the phase angles, applying a first part of the symbol to one of the first and second constellation formats to represent the first part of the symbol by one of the first and second amplitude rings with one of the circular grids, and applying a second part of the symbol to another one of the first and second constellation formats to represent the second part of the symbol by one of the first and second amplitude rings with one of the circular grids. The first and the second constellation can be mapped to subcarrier modulation in three different ways.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: June 11, 2019
    Assignees: Mitsubishi Electric Research Laboratories, Inc., Mitsubishi Electric Corporation
    Inventors: Keisuke Kojima, Tsuyoshi Yoshida, Toshiaki Koike Akino, David Millar, Kieran Parsons
  • Patent number: 10309005
    Abstract: A deposition device according to one embodiment includes a processing container. A mounting table is installed inside the processing container, and a metal target is installed above the mounting table. Further, a head is configured to inject an oxidizing gas toward the mounting table. This head is configured to move between a first region that is defined between the metal target and a mounting region where a target object is mounted on the mounting table and a second region spaced apart from a space defined between the metal target and the mounting region.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: June 4, 2019
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Yasuhiko Kojima, Hiroshi Sone, Atsushi Gomi, Kanto Nakamura, Toru Kitada, Yasunobu Suzuki, Yusuke Suzuki, Koichi Takatsuki, Tatsuo Hirasawa, Keisuke Sato, Chiaki Yasumuro, Atsushi Shimada
  • Publication number: 20190148543
    Abstract: A first diffusion region of a first conductivity type and a second diffusion region of a second conductivity type are formed next to each other in a semiconductor substrate. Drain and source contact regions of the first conductivity type are formed in the first and second diffusion region, respectively. A trench insulating region is formed in the first diffusion region between the drain and source contact regions. A third diffusion region of the second conductivity type is formed next to a side wall of the trench insulating region on the source contact region side in the first diffusion region between the source contact region and the trench insulating region. A gate electrode is formed on the semiconductor substrate through a gate insulating film to cover an area from an end portion of the source contact region to at least a part of a top surface of the trench insulating region.
    Type: Application
    Filed: November 8, 2018
    Publication date: May 16, 2019
    Inventors: Ryuhei KOJIMA, Keisuke NAGAO
  • Patent number: 10234627
    Abstract: A photonic device for converting optical modes of optical beams includes a first port to receive a first beam having a first mode, a mode converter and a second port to transmit the first beam. The mode converter is configured to broaden the first beam to convert the first mode into a second mode and narrow the broadened first beam at an output side of the mode converter, wherein the mode converter includes a guide material having a first refractive index and perturbation segments each having a second refractive index, wherein the first refractive index is greater than the second refractive index, wherein the perturbation segments are arranged in the guide material to cross the first beam.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: March 19, 2019
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Keisuke Kojima, Min Teng, Toshiaki Koike Akino, Bingnan Wang
  • Patent number: 10180192
    Abstract: Provide is a relief valve in which the flexibility of an attaching position is higher than a conventional relief valve. In the relief valve of the present invention, a discharge hole for discharging a fluid is arranged on a side surface of a cylindrical portion which protrudes from an end surface of a head portion in a bolt-type valve body. A direction change member which changes a direction in which the discharge hole is open to an arbitrary direction is provided. In this way, the relief valve is attached to a fluid device, and then with the direction change member, it is possible to direct the fluid discharge direction to a desired direction, and accordingly, the flexibility of the attaching position of the relief valve is enhanced as compared with the conventional relief valve.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: January 15, 2019
    Assignee: PACIFIC INDUSTRIAL CO., LTD.
    Inventor: Keisuke Kojima