Patents by Inventor Kenji Yamada

Kenji Yamada 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).

  • Electrochromic device, optical filter, lens unit, and imaging apparatus
    Patent number: 9977306
    Abstract: The present invention provides an electrochromic device including a pair of electrodes and an electrochromic layer disposed between the pair of electrodes and containing different electrochromic materials having the same polarity, wherein in the case where two materials are selected from the different electrochromic materials having the same polarity in descending order of maximum absorbance in a color-display mode of the electrochromic layer and where the diffusion coefficients of the molecules of the two materials are compared with each other in the color-display mode, a smaller diffusion coefficient D2min, a larger diffusion coefficient D2max, and maximum absorbance H2 of the molecules of the electrochromic material having the diffusion coefficient D2max in the color-display mode satisfy Formula (5). 1?D2max/D2min?(1+0.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: May 22, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Wataru Kubo, Shinjiro Okada, Kenji Yamada
  • Electrochromic composition and electrochromic element
    Patent number: 9969931
    Abstract: An electrochromic composition has an anodic electrochromic compound and a cathodic electrochromic compound, in which the anodic electrochromic compound is represented by General Formula [1] and the cathodic electrochromic compound is represented by General Formula [2] In General Formula 1, A1 to A4 represent substituents, R1 and R2, and R20 and R21 represent a hydrogen atom or a substituent. n is an integer of 1 to 5. X represents a thiophene derivative and Y- represents an anion.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: May 15, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kenji Yamada, Shinjiro Okada, Jun Yamamoto
  • DRIVE APPARATUS AND AUTOMOBILE
    Publication number: 20180105163
    Abstract: As a control of an inverter, a first pulse width modulation control switches a plurality of switching elements by generating a first pulse width modulation signal of the switching elements, and a second pulse width modulation control switches the switching elements by generating a second pulse width modulation signal of the switching elements based on a voltage modulation rate, a voltage phase, and the number of pulses per unit cycle of an electrical angle of the motor based on the torque command and has a smaller number of switchings of the switching elements than the first pulse width modulation control. The first pulse width modulation control and the second pulse width modulation control are executed in a switched manner. Execution of the second pulse width modulation control as the control of the inverter is restricted when the quietness is needed, compared with when the quietness is not needed.
    Type: Application
    Filed: September 19, 2017
    Publication date: April 19, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kiyotaka MATSUBARA, Kenji YAMADA, Toshihiro YAMAMOTO
  • DRIVE DEVICE AND VEHICLE
    Publication number: 20180105064
    Abstract: A drive device includes a motor, an inverter, an electric power storage device, and an electronic control unit. The electronic control unit is configured to generate a first pulse width modulation (PWM) signal of the switching elements by comparison of a voltage command of each phase according to a torque command of the motor and a carrier wave voltage, as a first PWM control. The electronic control unit is configured to generate a second PWM signal of the switching elements based on a modulation factor and a voltage phase of a voltage according to the torque command and a pulse count per unit cycle of an electric angle of the motor, as a second pulse width modulation control. The electronic control unit is configured to limit execution of the second PWM control when high controllability of the motor is requested rather than when the high controllability is not requested.
    Type: Application
    Filed: October 4, 2017
    Publication date: April 19, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kiyotaka MATSUBARA, Kenji YAMADA, Toshihiro YAMAMOTO
  • OIL-BASED INKJET INK
    Publication number: 20180079854
    Abstract: An oil-based inkjet ink that exhibits excellent repellency by the nozzle plate, prevents degradation of the nozzle plate, reduces image show-through, and yields high image density. The oil-based inkjet ink includes an encapsulated pigment containing a pigment and a urethane compound that coats the surface of the pigment, and a non-aqueous solvent, wherein the urethane compound has a urethane skeleton and one or more side chains and is insoluble in the non-aqueous solvent, and the side chains of the urethane compound contain one or more moieties selected from the group consisting of an aromatic ring, a heterocyclic ring, a carboxyl group, an amide linkage, a fluoroalkyl group having one or more fluorine atoms, and a nitrile group.
    Type: Application
    Filed: June 26, 2017
    Publication date: March 22, 2018
    Inventors: Yoshifumi WATANABE, Manami SHIMIZU, Kenji YAMADA, Tomohiro MATSUZAWA
  • Resist composition and patterning process
    Patent number: 9921479
    Abstract: A pattern is formed by coating a resist composition comprising (A) a PPD inhibitor, (B) a polymer adapted to change its solubility in an organic solvent under the action of acid, (C) a photoacid generator, and (D) an organic solvent onto a substrate, baking, exposing the resist film, PEB, and developing in an organic solvent developer. The resist composition ensures to form a pattern in a consistent manner while inhibiting any CD shrinkage and pattern profile change due to a delay from PEB to development.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: March 20, 2018
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Kenji Yamada, Satoshi Watanabe
  • ELECTROCHROMIC ELEMENT UNIT, DIMMING WINDOW, AND IMAGING DEVICE
    Publication number: 20180067371
    Abstract: An electrochromic element unit includes an electrochromic element having a pair of electrodes and an electrochromic layer disposed between the pair of electrodes, and an operation unit connected to the electrochromic element, wherein the operation unit is capable of performing a first type operation and a second type operation, and wherein change in a transmittance of the electrochromic element by the second type operation is different from change in the transmittance of the electrochromic element by the first type operation.
    Type: Application
    Filed: September 1, 2017
    Publication date: March 8, 2018
    Inventors: Kenji Yamada, Kousuke Kiyamura, Kentaro Ito
  • Shrink material and pattern forming process
    Patent number: 9904172
    Abstract: A shrink material is provided comprising a specific polymer and a solvent containing an anti-vanishing solvent. A pattern is formed by applying a resist composition comprising a base resin and an acid generator onto a substrate to form a resist film, exposing, developing in an organic solvent developer to form a negative resist pattern, applying the shrink material onto the pattern, and removing the excessive shrink material with an organic solvent for thereby shrinking the size of holes and/or slits in the pattern.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: February 27, 2018
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Kentaro Kumaki, Satoshi Watanabe, Koji Hasegawa, Daisuke Domon, Kenji Yamada
  • ELECTROCHROMIC ELEMENT, OPTICAL FILTER, LENS UNIT, IMAGING APPARATUS, AND WINDOW MEMBER
    Publication number: 20180052375
    Abstract: Provided is an electrochromic element, including: a pair of electrodes; and an electrochromic layer disposed between the pair of electrodes and containing a plurality of kinds of organic electrochromic compounds, in which: at least one kind of the plurality of kinds of organic electrochromic compounds includes an organic electrochromic compound having an absorption peak in a wavelength region of 700 nm or more during coloring thereof; and when an optical density in a decolored state thereof is defined as 0, a fluctuation ratio of a transmittance in a wavelength region of from 650 nm or more to 700 nm or less with respect to a central transmittance is within ±15% at an optical density of 0.3.
    Type: Application
    Filed: June 29, 2016
    Publication date: February 22, 2018
    Inventors: Kenji Yamada, Wataru Kubo, Satoshi Igawa, Kentaro Ito, Satoshi Ota
  • Boost converter control apparatus
    Patent number: 9899916
    Abstract: The present invention prevent a shortage of the output when an intermittent boost is executed. A control apparatus for controlling a boost converter that can boost power supply voltage by boost control has: an intermittent controlling device for executing the intermittent boosting in such a manner that output voltage is maintained in a voltage variation allowable range including a target value on the basis of the detected output voltage of the boost converter; an average value calculating device for calculating an average value of the output voltage in an execution period of the intermittent boosting; and a target value correcting device for correcting the set target value to increase it when the calculated average value is less than the target value and is less than a required voltage value of a loading apparatus.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: February 20, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masaki Okamura, Naoyoshi Takamatsu, Hideto Hanada, Kenji Yamada, Kosuke Hirano
  • NEGATIVE RESIST COMPOSITION AND RESIST PATTERN FORMING PROCESS
    Publication number: 20180039175
    Abstract: A negative resist composition comprising (A) a sulfonium compound of betaine type and (B) a polymer is provided. The resist composition is effective for controlling acid diffusion during the exposure step, exhibits a very high resolution during pattern formation, and forms a pattern with minimal LER.
    Type: Application
    Filed: August 2, 2017
    Publication date: February 8, 2018
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Keiichi Masunaga, Satoshi Watanabe, Masaaki Kotake, Kenji Yamada, Masaki Ohashi
  • Image reading device, image forming apparatus, and image reading method
    Patent number: 9883065
    Abstract: An image reading device includes a reading member and a skew detector. The reading member reads an image of a passing document at a read position preset in a document transport path. The skew detector detects a skew of the document by selecting one of a first skew detection mode and a second skew detection mode based on information that specifies a method for detecting the skew of the document. The first skew detection mode is a mode in which the skew of the document relative to a transport direction is detected based on an image of a leading-edge section, in the transport direction, read by the reading member. The second skew detection mode is a mode in which the skew of the document relative to the transport direction is detected based on an entire image read by the reading member.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: January 30, 2018
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Kenji Yamada, Kosuke Shimizu
  • HEAT EXCHANGER
    Publication number: 20180023898
    Abstract: A heat exchanger includes a duct, a stacked core, and a coupling plate. The duct includes a first plate that is disposed to face at least one of end faces of the stacked core in a core width direction, and a second plate that is disposed to face at least one of the end faces of the stacked core in a tube stacking direction. The second plate includes a second-plate end plate portion disposed to face the end face of the stacked core in the core width direction and brazed to a wall surface of the first plate, a second-plate center plate portion that is disposed to face the end face of the stacked core in the tube stacking direction, and a flange portion that extends in the tube stacking direction and is brazed to a bottom wall surface of a groove portion of the coupling plate.
    Type: Application
    Filed: February 29, 2016
    Publication date: January 25, 2018
    Inventors: Masafumi SAITOU, Akira YAMANAKA, Masaki HARADA, Kenji YAMADA, Kazutaka SUZUKI, Taichi ASANO, Shota TERACHI
  • ELECTROCHROMIC ELEMENT
    Publication number: 20180011386
    Abstract: An electrochromic element, includes: a pair of electrodes (3, 5); and an electrochromic layer (7) disposed between the pair of electrodes (3, 5), the electrochromic element being controlled in transmittance by pulse width modulation, in which: the electrochromic layer (7) contains at least one of two or more kinds of anode electrochromic materials, or two or more kinds of cathode electrochromic materials; and all of one of the anode electrochromic materials and the cathode electrochromic materials have an equal molecular length, or have a molecular length ratio of (large molecular length)/(small molecular length) of 1.4 or less, the electrochromic element being such that even when a driving environment temperature changes, its gradation can be controlled under a state in which its absorption spectrum is retained.
    Type: Application
    Filed: March 30, 2016
    Publication date: January 11, 2018
    Inventors: Jun Yamamoto, Shinjiro Okada, Kenji Yamada, Wataru Kubo
  • Vehicular rear panel
    Patent number: 9862301
    Abstract: A vehicular rear panel with a new configuration is provided. The vehicular rear panel according to an aspect of the present disclosure is made of a resin material and disposed on a rear vehicle body part. The vehicular rear panel includes a light guiding unit configured to guide light from the light source along an extending direction of the vehicular rear panel and a light emitting unit configured to emit light in the light guiding unit to a rear side of a vehicle.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: January 9, 2018
    Assignee: Koito Manufacturing Co., Ltd.
    Inventors: Kenji Yamada, Masaaki Nakabayashi, Koji Uchino, Manabu Maeda, Noriaki Ito, Norimasa Yamamoto, Asami Nakada, Yuji Sakurai, Hiroya Koizumi, Tsukasa Tokida, Takao Muramatsu, Tomoaki Otani, Motohiro Komatsu, Akihiro Matsumoto, Takashi Terayama, Hiroki Ishibashi
  • PRINTING APPARATUS, PRINTING METHOD AND PROGRAM MEDIUM
    Publication number: 20170359481
    Abstract: A printing apparatus is provided. The printing apparatus includes a processing circuitry configured to generate embedding data to be embedded in a print image to be printed out; divide the print image into two or more areas, and embed the embedding data in each of the two or more areas in such a way that placement of the embedding data is identical in each of the areas; and output the print image in which the embedding data is embedded.
    Type: Application
    Filed: May 30, 2017
    Publication date: December 14, 2017
    Applicant: Ricoh Company, Ltd.
    Inventor: Kenji YAMADA
  • ORGANIC COMPOUND, ELECTROCHROMIC COMPOUND, AND ELECTROCHROMIC ELEMENT, OPTICAL FILTER, LENS UNIT, IMAGING DEVICE, AND WINDOW COMPONENT HAVING SAME
    Publication number: 20170329195
    Abstract: An organic compound represented by General Formula (1), in which, in General Formula (1), R1 represents an alkyl group or an alkoxy group, X1 and X2 are each independently selected from an alkyl group which may have a substituent, an aryl group which may have a substituent, or an aralkyl group which may have a substituent, and A1? and A2? each independently represent a monovalent anion.
    Type: Application
    Filed: May 10, 2017
    Publication date: November 16, 2017
    Inventors: Satoshi Igawa, Jun Yamamoto, Kenji Yamada, Tetsuya Tamura
  • VEHICLE AND CONTROL METHOD FOR VEHICLE
    Publication number: 20170313206
    Abstract: When an absolute value of a rotation speed change rate of a motor is equal to or less than a threshold and an absolute value of a torque command change rate of the motor is equal to or less than a threshold, a switching angle is changed by cyclically changing a pulse type or the number of pulses as change in a pulse pattern. With this, respective order components of harmonics are dispersed, whereby it is possible to reduce the degree of prominence of a specific order component in harmonics relative to other order components.
    Type: Application
    Filed: April 24, 2017
    Publication date: November 2, 2017
    Inventors: Toshihiro Yamamoto, Kenji Yamada
  • ORGANIC COMPOUND, ELECTROCHROMIC ELEMENT CONTAINING THE SAME, OPTICAL FILTER, LENS UNIT, IMAGING DEVICE, AND WINDOW MATERIAL
    Publication number: 20170313934
    Abstract: An organic compound represented by the following general formula is provided. In the above formula (1), R11 to R15 each independently represent a hydrogen atom, an alkyl group, an alkoxy group, an aryl group, an aryloxy group, an aralkyl group, an acyl group, or a halogen atom provided that at least one of R11, R13, and R15 represents the alkoxy group or the aryloxy group; and R11 to R15 may form a ring structure therebetween, R5 and R6 each independently represent an alkyl group, an aryl group, or an aralkyl group. In addition, R21 to R24 each independently represent a hydrogen atom, an alkyl group, an alkoxy group, an aryl group, an aryloxy group, an aralkyl group, an acyl group, or a halogen atom and may form a ring structure therebetween. The above groups except the acyl group may be substituted when necessary.
    Type: Application
    Filed: April 26, 2017
    Publication date: November 2, 2017
    Inventors: Kenji Yamada, Satoshi Igawa, Wataru Kubo, Yuto Ito, Isao Kawata
  • VEHICLE
    Publication number: 20170313197
    Abstract: A vehicle includes an electronic control unit configured to perform control of an inverter by switching a plurality of controls including: first PWM control of generating a first PWM signal of a plurality of switching elements by comparison of voltage commands of respective phases based on a torque command of a motor with a carrier voltage and switching the plurality of switching elements; and second PWM control of generating a second PWM signal of the plurality of switching elements based on a modulation factor of a voltage and a voltage phase based on the torque command and the number of pulses in a predetermined period of an electrical angle of the motor and switching the plurality of switching elements. The electronic control unit is configured to limit execution of the second PWM control when an abnormality occurs in at least one of the current sensor or the voltage sensor.
    Type: Application
    Filed: April 21, 2017
    Publication date: November 2, 2017
    Inventors: Kenji Yamada, Toshihiro Yamamoto, Masashi Mizuno