Patents by Inventor Takashi Kawashima

Takashi Kawashima 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: 20170102483
    Abstract: Provided are a near infrared ray absorbent composition which can form a cured film having excellent heat resistance while maintaining high near infrared ray shielding properties, and a near infrared ray cut filter, a manufacturing method of a near infrared ray cut filter, a solid image pickup element, and a camera module using the near infrared ray absorbent composition. The near infrared ray absorbent composition contains a compound having a partial structure represented by M-X, and a near infrared ray absorbent compound, and a content of the compound having a partial structure represented by M-X is greater than or equal to 15 mass % with respect to a total solid content of the near infrared ray absorbent composition.
    Type: Application
    Filed: December 23, 2016
    Publication date: April 13, 2017
    Applicant: FUJIFILM Corporation
    Inventors: Takashi KAWASHIMA, Keisuke ARIMURA
  • Patent number: 9618666
    Abstract: An object of the present invention is to provide a near-infrared-absorbing composition capable of forming a cured film having excellent heat resistance while maintaining strong near-infrared shielding properties when a cured film is produced. The near-infrared-absorbing composition of the present invention includes a copper complex obtained by reacting two or more kinds of sulfonic acids represented by General Formula (I) described below or salts thereof with a copper component and a solvent.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: April 11, 2017
    Assignee: FUJIFILM Corporation
    Inventors: Takashi Kawashima, Seiichi Hitomi, Hidenori Takahashi, Yuki Nara, Seongmu Bak
  • Patent number: 9620156
    Abstract: A magnetic head device with high joint strength in an arm and a suspension is provided. The magnetic head device comprises an arm, a suspension overlapping with a leading end part of the arm, a slider located at a leading end part of the suspension, and a joint part that is located between the leading end part of the arm and the suspension and that joins the arm and the suspension, while the joint part includes Sn.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: April 11, 2017
    Assignee: TDK CORPORATION
    Inventors: Katsuhiko Igarashi, Makoto Orikasa, Takashi Kawashima, Hisayuki Abe
  • Publication number: 20170096049
    Abstract: When the magnitude of a motor current Iu is smaller than a threshold value at a timing when a polarity of the motor current Iu is expected to be reversed after the elapse of one control cycle, a control device sets a correction amount of a width of a pulse generated by PWM control at a correction amount +?. When the magnitude of the motor current is greater than the threshold value at the timing, the control device sets the correction amount of the width of the pulse generated by the PWM control at zero or a value ? smaller than the correction amount +?. As a result, an error of a dead time period in inverter control can be reduced.
    Type: Application
    Filed: October 5, 2016
    Publication date: April 6, 2017
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takashi KAWASHIMA, Yoshiki NAGATA
  • Publication number: 20170058898
    Abstract: A motor-driven compressor includes an electric motor including a rotor, a housing, a compression unit, a drive circuit, and a controller. The controller includes a deceleration controller that performs a deceleration control, which decelerates the rotor, during a first period in response to the rotor being rotating in a direction opposite to the forward direction, and a continuation controller that performs a continuation control, which continues the rotation of the rotor, during a second period that is longer than the first period after the deceleration control is performed. A fluctuation difference of a rotational frequency of the rotor during the continuation control is less than a deceleration rotational frequency difference.
    Type: Application
    Filed: August 25, 2016
    Publication date: March 2, 2017
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Shinichi KAWAMURA, Takashi KAWASHIMA
  • Publication number: 20170058899
    Abstract: A motor-driven compressor includes a three-phase motor including a rotor, a housing, a compression unit, a drive circuit, and a controller. The drive circuit includes u-phase upper and lower arm switching elements, v-phase upper and lower arm switching elements, and w-phase upper and lower arm switching elements. The controller performs a deceleration control in response to the rotor being rotating in a direction opposite to the forward direction. The controller controls the drive circuit in a switching control mode that includes a first mode, in which one or more switching elements of the upper and lower arm switching elements of the three phases are activated while the remaining switching elements are deactivated, and a second mode, which differs from the first mode in a combination of the activated and deactivated switching elements.
    Type: Application
    Filed: August 25, 2016
    Publication date: March 2, 2017
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Akimitsu ICHIHARA, Shinichi KAWAMURA, Takashi KAWASHIMA
  • Patent number: 9514772
    Abstract: A magnetic head device which has strong joint strength in an arm and a suspension and high accuracy of a size and a shape is provided. The magnetic head device comprises an arm, a suspension overlapping with a leading end part of the arm, a slider located at a leading end part of the suspension, and a first joint part that is placed between the leading end part of the arm and the suspension and that joins the arm and the suspension, the first joint part including Sn or a resin adhesive.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: December 6, 2016
    Assignee: TDK CORPORATION
    Inventors: Takashi Kawashima, Toru Mizuno, Katsuhiko Igarashi, Makoto Orikasa, Hidetoshi Suzuki
  • Publication number: 20160312792
    Abstract: A bidirectional axial fan device includes: a moving blade member with a plurality of vanes; and a casing that includes a mounting portion, a frame, and a plurality of spokes, a motor being mounted to the mounting portion, the frame forming a ventilation hole. The plurality of spokes couple the mounting portion to the frame at an exhaust air side during a normal rotation of the motor. An inner peripheral surface of the frame has a multiple stage shape, in which a part on the exhaust air side during the normal rotation has a diameter larger than a diameter of a part on an air intake side during the normal rotation, such that intervals between tops on the exhaust air side during the normal rotation at outer peripheral edges of the plurality of vanes and the inner peripheral surface of the frame are expanded.
    Type: Application
    Filed: April 15, 2016
    Publication date: October 27, 2016
    Inventors: Satoshi FUJIMAKI, Toshiya NISHIZAWA, Takashi KAWASHIMA
  • Publication number: 20160304730
    Abstract: An object of the present invention is to provide a near infrared radiation-absorbing composition having favorable shielding properties in a near infrared range when used to produce cured films, a near infrared radiation cut-off filter and a production method therefor, and a camera module and a production method therefor. The near infrared radiation-absorbing composition including a copper complex formed by reacting a compound (A) having two or more coordinating atoms that form bonds using unshared electron pairs with a copper component.
    Type: Application
    Filed: June 24, 2016
    Publication date: October 20, 2016
    Applicant: FUJIFILM Corporation
    Inventors: Seiichi HITOMI, Takashi KAWASHIMA, Kouitsu SASAKI
  • Publication number: 20160281716
    Abstract: A motor-driven compressor is provided with a motor including a rotor, a housing including an inlet through which low-pressure refrigerant serving as a low-pressure fluid is drawn in, a compression unit that compresses the low-pressure refrigerant and discharges compressed high-pressure fluid, an inverter that drives the motor, and a controller that controls the inverter. If the rotor is activating in a reverse direction that is opposite to a forward direction when activating the motor, the controller obtains a position of a d-axis of the rotor and controls the inverter so that current flows to the obtained d-axis and so that frequency of current flowing to the motor decreases as time elapses.
    Type: Application
    Filed: March 21, 2016
    Publication date: September 29, 2016
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Shinichi KAWAMURA, Akimitsu ICHIHARA, Takashi KAWASHIMA
  • Publication number: 20160275976
    Abstract: A magnetic head device with high joint strength in an arm and a suspension is provided. The magnetic head device comprises an arm, a suspension overlapping with a leading end part of the arm, a slider located at a leading end part of the suspension, and a joint part that is located between the leading end part of the arm and the suspension and that joins the arm and the suspension, while the joint part includes Sn.
    Type: Application
    Filed: March 16, 2016
    Publication date: September 22, 2016
    Applicant: TDK CORPORATION
    Inventors: Katsuhiko IGARASHI, Makoto ORIKASA, Takashi KAWASHIMA, Hisayuki ABE
  • Publication number: 20160275975
    Abstract: A magnetic head device which has strong joint strength in an arm and a suspension and high accuracy of a size and a shape is provided. The magnetic head device comprises an arm, a suspension overlapping with a leading end part of the arm, a slider located at a leading end part of the suspension, and a first joint part that is placed between the leading end part of the arm and the suspension and that joins the arm and the suspension, the first joint part including Sn or a resin adhesive.
    Type: Application
    Filed: March 16, 2016
    Publication date: September 22, 2016
    Applicant: TDK CORPORATION
    Inventors: Takashi KAWASHIMA, Toru MIZUNO, Katsuhiko IGARASHI, Makoto ORIKASA, Hidetoshi SUZUKI
  • Publication number: 20160245288
    Abstract: A motor-driven compressor includes an electric motor, a drive circuit, a modulation method controller, a temperature measuring section, a high-temperature (HT) stop controller, and a high-temperature (HT) stop temperature setting section. The high-temperature (HT) stop controller stops the electric motor when the temperature measured by the temperature measuring section is higher than or equal to a predetermined high-temperature (HT) stop temperature. When the modulation method is the three-phase modulation, the HT stop temperature setting section sets the HT stop temperature to a three-phase high-temperature (HT) stop temperature. When the modulation method is the two-phase modulation, the HT stop temperature setting section sets the HT stop temperature to a two-phase high-temperature (HT) stop temperature, which is higher than the three-phase HT stop temperature.
    Type: Application
    Filed: February 18, 2016
    Publication date: August 25, 2016
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Junya YANO, Tsuyoshi YAMAGUCHI, Takashi KAWASHIMA, Yoshiki NAGATA
  • Publication number: 20160245269
    Abstract: A motor-driven compressor includes a compression portion, which compresses a fluid, an electric motor, which drives the compression portion, a drive circuit, which drives the electric motor, a temperature obtaining section, which obtains the temperature of the drive circuit, and a drive mode controller, which controls the drive mode of the drive circuit. The drive mode controller controls the drive mode based on the temperature obtained by the temperature obtaining section and at least one of the rotational speed and the modulation factor of the electric motor.
    Type: Application
    Filed: February 17, 2016
    Publication date: August 25, 2016
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yoshiki NAGATA, Junya YANO, Takashi KAWASHIMA, Tatsuya KOIDE
  • Publication number: 20160178816
    Abstract: Provided are a near-infrared-absorbing composition capable of forming a cured film having excellent heat resistance while maintaining high near-infrared-shielding properties, a near-infrared cut filter obtained using the same, a process for producing said cut filter, a camera module and a process for producing the same, and a solid photographing element. The near-infrared-absorbing composition includes a near-infrared-absorbing compound (A1) obtained from a reaction between a low-molecular-weight compound which has two or more coordination sites to a metal component or a coordination site to a metal component and a cross-linking group and has a molecular weight of 1800 or lower or a salt thereof and the metal component and a near-infrared-absorbing compound (B) obtained from a reaction between a high-molecular-weight compound having a repeating unit represented by Formula (II) below or a salt thereof and a metal component.
    Type: Application
    Filed: January 21, 2016
    Publication date: June 23, 2016
    Applicant: FUJIFILM Corporation
    Inventors: Hidenori TAKAHASHI, Takashi KAWASHIMA, Takeshi INASAKI, Seiichi HITOMI
  • Publication number: 20160077256
    Abstract: Provided are a near-infrared-absorbing composition capable of forming a cured film having excellent heat resistance while maintaining high near-infrared shielding properties, a near-infrared cut-off filter, a production method using the same, and a camera module. Provided are a near-infrared-absorbing composition including a compound obtained from a reaction between a polymer (A1) having an acid group or a salt thereof and a copper component and a near-infrared-absorbing composition including a compound obtained from a reaction between a polymer (A1) having an acid group or a salt thereof and a copper component and a copper complex obtained from a reaction between a low-molecular-weight compound having a coordination site and a copper component.
    Type: Application
    Filed: November 19, 2015
    Publication date: March 17, 2016
    Applicant: FUJIFILM CORPORATION
    Inventors: Takashi KAWASHIMA, Takeshi INASAKI, Hidenori TAKAHASHI
  • Publication number: 20160075807
    Abstract: The composition includes (A) a pigment; and (B) a polymer having (b-1) a bulky amine moiety, (b-2) an acid group, and (b-3) a constituent unit derived from a macromonomer having a weight average molecular weight of 1000 to 50000, in which the bulky amine moiety (b-1) has a nitrogen atom, carbon atoms X1 bonded with the nitrogen atom, and carbon atoms Y1 bonded with the carbon atoms X1, and a total carbon number of the carbon atoms X1 and the carbon atoms Y1 is 7 or more.
    Type: Application
    Filed: November 24, 2015
    Publication date: March 17, 2016
    Applicant: FUJIFILM CORPORATION
    Inventors: Hiroaki IDEI, Toshihito KUGE, Takashi KAWASHIMA
  • Publication number: 20160036359
    Abstract: An inverter apparatus includes an inverter circuit, a capacitor, and a control unit. In the first control mode, the control unit shifts a phase of at least one of PWM signals of three phases such that a time period during which polarities of output voltages of three phases are the same is shorter in the first control mode than the time period in the second control mode; and controls the inverter circuit so as to supply a direct current to the three-phase AC motor as a d-axis current by outputting the PWM signals of three phases, each having a phase after the phase shift processing. In the second control mode, the control unit controls the inverter circuit so as to supply an alternating current to the three-phase AC motor by outputting the PWM signals of three phases, each having a phase before the phase shift processing.
    Type: Application
    Filed: July 29, 2015
    Publication date: February 4, 2016
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yoshiki NAGATA, Takashi KAWASHIMA
  • Publication number: 20160037034
    Abstract: Provided are a near-infrared-ray-absorbing composition having strong near-infrared shielding properties when a cured film is produced, a near-infrared-ray cut filter, a manufacturing method therefor, a camera module, and a manufacturing method therefor. The near-infrared-ray-absorbing composition includes a copper complex obtained by reacting a compound (A) having at least two coordination sites with a copper component.
    Type: Application
    Filed: October 6, 2015
    Publication date: February 4, 2016
    Applicant: FUJIFILM CORPORATION
    Inventors: Takeshi INASAKI, Takashi KAWASHIMA, Seiichi HITOMI, Kouitsu SASAKI
  • Publication number: 20150316844
    Abstract: Provided is a colored curable composition having a good chemical resistance, and capable of forming a good colored layer pattern, the colored curable composition including an epoxy group-containing compound, and a phthalocyanine dye having a functional group capable of forming a covalent bond by a reaction with the epoxy group under heating.
    Type: Application
    Filed: July 15, 2015
    Publication date: November 5, 2015
    Applicant: FUJIFILM CORPORATION
    Inventors: Suguru SAMEJIMA, Takashi KAWASHIMA, Yousuke MURAKAMI