Patents by Inventor Hiromi Ozawa

Hiromi Ozawa 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: 20230360859
    Abstract: An anode body, a dielectric layer disposed on a surface of the anode body, and a cathode part covering at least a part of the dielectric layer are provided. The cathode part includes a solid electrolyte layer covering the at least the part of the dielectric layer and containing a conjugated polymer. A solid electrolytic capacitor having excellent heat resistance is provided by using a solid electrolytic capacitor element where a full width at half maximum of a first peak is in a range from 35 cm?1 to 80 cm?1 inclusive when the first peak attributed to a CC stretching vibration derived from the conjugated polymer is fitted with a Lorentz function in a Raman spectrum of the solid electrolyte layer.
    Type: Application
    Filed: October 21, 2021
    Publication date: November 9, 2023
    Inventors: TAKAHIRO YOSHII, KEI HIROTA, HIROMI OZAWA
  • Publication number: 20230245836
    Abstract: A solid electrolytic capacitor element includes an anode body, a dielectric layer disposed on a surface of the anode body, and a cathode part covering at least a part of the dielectric layer are provided. The cathode part includes a solid electrolyte layer covering the at least the part of the dielectric layer. The solid electrolyte layer contains a first polymer and a second polymer component. The first polymer component includes a monomer unit corresponding to a thiophene compound. The second polymer component includes a polymer anion. A Raman spectrum of a surface layer in the solid electrolyte layer has a peak characteristic for the first polymer component.
    Type: Application
    Filed: July 15, 2021
    Publication date: August 3, 2023
    Inventors: MASATOSHI TAKESHITA, HIROMI OZAWA, YIHAN ZHANG, HITOSHI FUKUI
  • Publication number: 20230076194
    Abstract: A capacitor element includes an anode body, a dielectric layer disposed on a surface of the anode body, a solid electrolyte layer covering at least a part of the dielectric layer, and a cathode lead-out layer covering at least a part of the solid electrolyte layer. An insulating member is disposed from an outermost surface of the cathode lead-out layer to a depth of more than or equal to 0.001 ?m.
    Type: Application
    Filed: January 26, 2021
    Publication date: March 9, 2023
    Inventors: HITOSHI FUKUI, KATSUHISA ISHIZAKI, MASAMICHI INOUE, DAISUKE USA, MAKOTO NAGASHIMA, HIROMI OZAWA
  • Patent number: 10547182
    Abstract: When a main switch (12) is turned ON, an electric operating machine (1) is put in the standby mode. With a trigger (13) being pulled in the standby mode, a power supply circuit (16) applies a voltage to a drive part (30). The power supply circuit (16) adjusts the voltage applied to the drive part (30) for a voltage corresponding to the pulling rate of the trigger (13). When the current running toward the drive part (30) exceeds the rated value of the drive part (30), the power supply circuit (16) automatically stops power supply to the drive part (30). On the other hand, when the output voltage of a battery (50) drops and the battery (50) is put in an overdischarge state, power supply to the drive part (30) is automatically stopped. When it is detected that the battery (50) undergoes an abnormal event, power supply to the drive part (30) is automatically stopped.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: January 28, 2020
    Assignee: KOKI HOLDINGS CO., LTD.
    Inventors: Nobuhiro Takano, Kazuhiko Funabashi, Hideyuki Tanimoto, Chikai Yoshimizu, Hiromi Ozawa, Yoshihiro Hoshi
  • Patent number: 9955627
    Abstract: An electric working machine including: a motor; a control unit configured to control rotation of the motor; a fixed part provided with a handle having a grip portion; a movable part held by the fixed part and is configured to be extendible by sliding relative to the fixed part; and a cutting blade provided to a end portion of the movable pipe and is configured to be driven by the motor; characterized in that the electric working machine further includes a detection unit which is connected to the control unit and is configured to detect whether or not the movable part is positioned at a predetermined extended position relative to the fixed part.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: May 1, 2018
    Assignee: HITACHI KOKI CO., LTD.
    Inventors: Yasushi Nakano, Yuki Horie, Kazuhiko Funabashi, Yuuichi Toyoshima, Hiromi Ozawa, Hirohisa Tomita
  • Publication number: 20170155258
    Abstract: When a main switch (12) is turned ON, an electric operating machine (1)is put in the standby mode. With a trigger (13) being pulled in the standby mode, a power supply circuit (16) applies a voltage to a drive part (30). The power supply circuit (16) adjusts the voltage applied to the drive part (30) for a voltage corresponding to the pulling rate of the trigger (13). When the current running toward the drive part (30) exceeds the rated value of the drive part (30), the power supply circuit (16) automatically stops power supply to the drive part (30). On the other hand, when the output voltage of a battery (50) drops and the battery (50) is put in an overdischarge state, power supply to the drive part (30) is automatically stopped. When it is detected that the battery (50) undergoes an abnormal event, power supply to the drive part (30) is automatically stopped.
    Type: Application
    Filed: February 10, 2017
    Publication date: June 1, 2017
    Inventors: Nobuhiro TAKANO, Kazuhiko FUNABASHI, Hideyuki TANIMOTO, Chikai YOSHIMIZU, Hiromi OZAWA, Yoshihiro HOSHI
  • Publication number: 20160021819
    Abstract: An electric working machine including: a motor; a control unit configured to control rotation of the motor; a fixed part provided with a handle having a grip portion; a movable part held by the fixed part and is configured to be extendible by sliding relative to the fixed part; and a cutting blade provided to a end portion of the movable pipe and is configured to be driven by the motor; characterized in that the electric working machine further includes a detection unit which is connected to the control unit and is configured to detect whether or not the movable part is positioned at a predetermined extended position relative to the fixed part.
    Type: Application
    Filed: February 15, 2013
    Publication date: January 28, 2016
    Inventors: Yasushi Nakano, Yuki Horie, Kazuhiko Funabashi, Yuuichi Toyoshima, Hiromi Ozawa, Hirohisa Tomita
  • Patent number: 9160211
    Abstract: An electric grasscutter includes a motor (50) which drives a rotary blade (42). The motor (50) is a brushless motor accommodated in a motor housing (51) and including a rotor (53) provided integrally with an output shaft (52), and a stator (54) fixed to the motor housing (51). A motor control circuit which drives the motor (50) is accommodated in the motor housing (51). The motor control circuit includes an inverter having FETs (81-86) as switching elements, and a control section to control the FETs (81-86). The FETs (81-86) are fixed in contact with the motor housing (51).
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: October 13, 2015
    Assignee: HITACHI KOKI CO., LTD.
    Inventors: Hideyuki Tanimoto, Chikai Yoshimizu, Nobuhiro Takano, Hiromi Ozawa, Kazuhiko Funabashi
  • Patent number: 8928201
    Abstract: A motor has an output shaft which is rotatably supported by a housing, a rotor which is fixed to the output shaft and which comprises a printed-wiring board, and a stator which is fixed to the housing and which comprises a magnet facing the rotor. The printed-wiring board comprises a coil/commutator disk and a coil disk. A commutator conductor pattern is formed in a commutator region of the coil/commutator disk. Likewise, coil conductor patterns are formed in respective coil regions of the coil/commutator disk and of the coil disk.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: January 6, 2015
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Hideyuki Tanimoto, Chikai Yoshimizu, Nobuhiro Takano, Hiromi Ozawa, Kazuhiko Funabashi
  • Publication number: 20140130645
    Abstract: First, second and third sensors 11, 12 and 13 emit electromagnetic waves, receive electromagnetic waves emitted by the first, second and third sensors 11, 12 and 13 and reflected by an object 9 or electromagnetic wave emitted by the object 9 that received the electromagnetic waves emitted by the first, second and third sensors 11, 12 and 13, and specify distances between themselves and the object 9, respectively, based on time differences between emissions and receptions of the electromagnetic waves, and a control section 3 specifies three-dimensional coordinates of the object 9 based on the distances between the respective sensors 11, 12 and 13 and the object 9, determines whether or not the three-dimensional coordinate of the object 9 falls within a predetermined region and stops a motor when the three-dimensional coordinates of the object 9 falls within the region.
    Type: Application
    Filed: August 8, 2012
    Publication date: May 15, 2014
    Applicant: HITACHI KOKI CO., LTD.
    Inventors: Nobuhiro Takano, Shigeharu Ushiwata, Hiromi Ozawa, Yoshikazu Kawano
  • Publication number: 20120222535
    Abstract: According to an aspect of the invention, a bench cutter like a miter saw including: a drive portion driving a cutting blade; a base portion supporting a workpiece; a cutting portion arranged on the base portion, pivotally supporting the cutting blade above the base portion, and configured to make the cutting blade come close to and separate from the base portion; and a supporting portion connected to the base portion and movably supporting the cutting portion, wherein the cutting portion including: a transmission portion for transmitting power of the drive portion to the cutting blade; and a gear case covering the transmission mechanism and having a lower face portion opposed to an upper face of the base portion, wherein the transmission portion including: a spindle concentrically supporting the cutting blade; and a cutting blade fixing portion having a flange for fixing the cutting blade to the spindle.
    Type: Application
    Filed: May 11, 2012
    Publication date: September 6, 2012
    Applicant: HITACHI KOKI CO., LTD.
    Inventors: Ryuuichi IMAMURA, Hiromi OZAWA, Masayuki TAJIMA, Hirohide KAWADA
  • Patent number: 8230768
    Abstract: A miter saw having good workability without decrease in angle visibility is disclosed. The miter saw includes a display unit provided on a turntable. The display unit 600 is positioned between an operating handle protruding outward from the turntable and a rotation axis of the turntable. The display unit is positioned below the upper surfaces of a base and the turntable not so as to protrude above the upper surface of the turntable. The display unit displays an inclination angle of a circular saw blade with respect to the upper surface of the base and a rotation angle of the turntable with respect to the base in a line.
    Type: Grant
    Filed: January 18, 2005
    Date of Patent: July 31, 2012
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Hiromi Ozawa, Eisaku Oka, Nobuhiro Takano, Hideaki Terashima
  • Publication number: 20120139456
    Abstract: When a main switch (12) is turned ON, an electric operating machine (1) is put in the standby mode. With a trigger (13) being pulled in the standby mode, a power supply circuit (16) applies a voltage to a drive part (30). The power supply circuit (16) adjusts the voltage applied to the drive part (30) for a voltage corresponding to the pulling rate of the trigger (13). When the current running toward the drive part (30) exceeds the rated value of the drive part (30), the power supply circuit (16) automatically stops power supply to the drive part (30). On the other hand, when the output voltage of a battery (50) drops and the battery (50) is put in an overdischarge state, power supply to the drive part (30) is automatically stopped. When it is detected that the battery (50) undergoes an abnormal event, power supply to the drive part (30) is automatically stopped.
    Type: Application
    Filed: August 27, 2010
    Publication date: June 7, 2012
    Inventors: Nobuhiro Takano, Kazuhiko Funabashi, Hideyuki Tanimoto, Chikai Yoshimizu, Hiromi Ozawa, Yoshihiro Hoshi
  • Publication number: 20120104881
    Abstract: A motor has an output shaft which is rotatably supported by a housing, a rotor which is fixed to the output shaft and which comprises a printed-wiring board, and a stator which is fixed to the housing and which comprises a magnet facing the rotor. The printed-wiring board comprises a coil/commutator disk and a coil disk. A commutator conductor pattern is formed in a commutator region of the coil/commutator disk. Likewise, coil conductor patterns are formed in respective coil regions of the coil/commutator disk and of the coil disk.
    Type: Application
    Filed: September 22, 2010
    Publication date: May 3, 2012
    Inventors: Hideyuki Tanimoto, Chikai Yoshimizu, Nobuhiro Takano, Hiromi Ozawa, Kazuhiko Funabashi
  • Publication number: 20120104983
    Abstract: An electric grasscutter includes a motor (50) which drives a rotary blade (42). The motor (50) is a brushless motor accommodated in a motor housing (51) and including a rotor (53) provided integrally with an output shaft (52), and a stator (54) fixed to the motor housing (51). A motor control circuit which drives the motor (50) is accommodated in the motor housing (51). The motor control circuit includes an inverter having FETs (81-86) as switching elements, and a control section to control the FETs (81-86). The FETs (81-86) are fixed in contact with the motor housing (51).
    Type: Application
    Filed: September 22, 2010
    Publication date: May 3, 2012
    Inventors: Hideyuki Tanimoto, Chikai Yoshimizu, Nobuhiro Takano, Hiromi Ozawa, Kazuhiko Funabashi
  • Patent number: 8047111
    Abstract: A miter saw including a base, a turntable, a support section extending from the turntable, and a circular saw unit supported to the support section. An adjustment mechanism is provided between the base and the turntable for performing fine-adjustment to the rotation angle of the turntable relative to the base. The adjustment mechanism is located at a front side of the turntable, and a digital display is provided near the adjustment mechanism for displaying the rotation angle.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: November 1, 2011
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Shigeharu Ushiwata, Hideaki Terashima, Ryuichi Imamura, Hiromi Ozawa, Toshihiko Hayashizaki
  • Patent number: 7778796
    Abstract: A digital miter saw for cutting a workpiece includes a base, a member supported on the base and moveable relative to the base, and a cutting member moveable with the member. A detector is provided for detecting at least one of a miter angle and a bevel angle between the cutting member and the workpiece, and for outputting a signal indicative of the at least one detected angle, and a digital controller is provided which has an interface operable to receive the signal.
    Type: Grant
    Filed: March 1, 2006
    Date of Patent: August 17, 2010
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Nobuhiro Takano, Eisaku Oka, Hiromi Ozawa, Yoshikazu Kawano, Kenrou Ishimaru, Tomoyuki Kawahara, Hiroyuki Saitou
  • Patent number: 7770501
    Abstract: A miter saw having a cutting portion movable toward and away from a base and laterally tiltable for bevel cutting. A gear case is provided at the cutting portion and is positioned at one lateral side of the cutting portion. A bearing holder is provided in the gear case for holding a bearing which rotatably supports a spindle for a circular saw blade. The bearing holder has a thickness smaller than an axial length of the bearing. A first bearing nip member in contact with one axial end of the bearing is fixed to one side of the bearing holder, and a second bearing nip member in contact with another axial end of the bearing is fixed to another side of the bearing holder. These nip members are made from a material having a mechanical strength higher than that of the bearing holder.
    Type: Grant
    Filed: May 23, 2006
    Date of Patent: August 10, 2010
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Hiromi Ozawa, Kouji Takase, Hiroyuki Saitou
  • Patent number: 7757593
    Abstract: A miter saw having a laterally tiltable cutting portion and a fence unit that supports a workpiece without mechanical interference with the cutting portion regardless of its laterally tilting posture. A left fence unit and a right fence unit are provided on a base portion. The left fence includes a fixed left fence, a first left subordinate fence pivotally movably connected to the fixed left fence, and a second left subordinate fence pivotally movably connected to the fixed left fence. The first left subordinate fence is moved to a first position outside of a first titling region of the cutting portion, and to a second position outside of the first tilting region and a second tilting region in which a tilting angle of the cutting portion is greater than that in the first tilting region.
    Type: Grant
    Filed: May 23, 2006
    Date of Patent: July 20, 2010
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Kouji Takase, Hiromi Ozawa, Hiroyuki Saitou
  • Publication number: 20090260498
    Abstract: According to an aspect of the invention, a bench cutter like a miter saw including: a drive portion driving a cutting blade; a base portion supporting a workpiece; a cutting portion arranged on the base portion, pivotally supporting the cutting blade above the base portion, and configured to make the cutting blade come close to and separate from the base portion; and a supporting portion connected to the base portion and movably supporting the cutting portion, wherein the cutting portion including: a transmission portion for transmitting power of the drive portion to the cutting blade; and a gear case covering the transmission mechanism and having a lower face portion opposed to an upper face of the base portion, wherein the transmission portion including: a spindle concentrically supporting the cutting blade; and a cutting blade fixing portion having a flange for fixing the cutting blade to the spindle.
    Type: Application
    Filed: March 11, 2009
    Publication date: October 22, 2009
    Applicant: HITACHI KOKI CO., LTD.
    Inventors: Ryuuichi IMAMURA, Hiromi OZAWA, Masayuki TAJIMA, Hirohide KAWADA