Patents by Inventor Takashi Kawamata

Takashi Kawamata 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: 20250100081
    Abstract: A method of producing a substrate includes: providing a ceramic substrate having a first surface and a second surface that is located opposite the first surface; irradiating a first part of the first surface with a first laser light having a first pulse width to perform ablation of the first part of the ceramic substrate; and irradiating a second part of either the first surface or the second surface with a second laser light having a second pulse width, which is longer than the first pulse width, the second part being located apart from the first part in a plan view to perform thermal processing of a third part including the first part and the second part. Upon removal of the third part and a part enclosed by the third part, an aperture that extends from the first surface to the second surface is formed in the ceramic substrate.
    Type: Application
    Filed: September 26, 2024
    Publication date: March 27, 2025
    Applicant: NICHIA CORPORATION
    Inventors: Norifumi SASAOKA, Takashi KAWAMATA
  • Publication number: 20250096054
    Abstract: A wiring substrate includes a ceramic substrate having an upper surface, a lower surface, and a lateral surface. The lower surface includes a first lower surface and a second lower surface inward from the first lower surface. The lateral surface includes a first lateral surface and a second lateral surface inward from the first lateral surface. The wiring substrate includes a first wiring having a thickness of 80% or more of a height from the second lower surface to the first lower surface and disposed in contact with the second lower surface and the second lateral surface. A lateral surface of the first wiring is exposed from the first lateral surface. A main surface of 50% or more of a surface area of a lower surface of the first wiring is substantially parallel to the second lower surface and is disposed inward from the first lower surface.
    Type: Application
    Filed: September 11, 2024
    Publication date: March 20, 2025
    Applicant: NICHIA CORPORATION
    Inventors: Eiko MINATO, Atsushi HOSOKAWA, Akiko NAGAE, Takashi KAWAMATA
  • Publication number: 20250050483
    Abstract: A nailer includes a case part with hollow shape and a piston part. The case part includes a cylinder. The piston part defines a pressure chamber inside the case part and strikes a fastener by moving to a lower side due to a pressure of a gas in the pressure chamber. The piston part includes: a base member including a sidewall; an X-ring attached to the base member to be interposed between the sidewall and the cylinder; and an O-ring interposed between the sidewall and the cylinder and attached at a position different from the X-ring in an up-down direction. The X-ring includes a first base part and a lip part standing from the first base part and contacting the cylinder. The O-ring includes a second base part and does not include a lip part standing from the second base part.
    Type: Application
    Filed: August 6, 2024
    Publication date: February 13, 2025
    Applicant: Koki Holdings Co., Ltd.
    Inventors: Toshinori YASUTOMI, Takashi Kawamata
  • Patent number: 12194606
    Abstract: Provided is a working machine with improved durability. A nail driver (working machine) includes a hitting portion that is formed in a rod shape extending about an axis line, an injection portion that abuts on an outer peripheral surface of the hitting portion, thereby guiding a movement of the hitting portion toward one side in the axial direction, and a supply portion that energizes a fastener toward one side in a direction intersecting with the axial direction, thereby supplying the fastener to the injection portion. The hitting portion has a tip part, and a center part provided at a position different from that of the tip part in the axial direction. At least a part of an outer peripheral surface of the tip part (tip part outer peripheral surface) on an anti-feeder side with respect to the axis line protrudes from an outer peripheral surface of the center part (center par outer peripheral surface) on a supply portion side with respect to the axis line.
    Type: Grant
    Filed: December 24, 2021
    Date of Patent: January 14, 2025
    Assignee: KOKI HOLDINGS CO., LTD.
    Inventors: Takashi Kawamata, Masahiro Miura, Kazuhiro Ootsuka
  • Publication number: 20240355987
    Abstract: A wiring substrate includes a base body, a metal member, and an insulating member. The base body is insulating and has a first surface and a second surface on an opposite side to the first surface. The base body includes a groove portion provided on a second surface side, and a through hole connecting the first surface and a bottom surface of the groove portion. The metal member is disposed in the groove portion on the bottom surface side of the groove portion and in the through hole away from an opening of the groove portion. The insulating member is disposed so as to close the opening of the groove portion.
    Type: Application
    Filed: April 17, 2024
    Publication date: October 24, 2024
    Applicant: NICHIA CORPORATION
    Inventors: Masaaki KATSUMATA, Eiko MINATO, Takashi KAWAMATA, Atsushi HOSOKAWA
  • Publication number: 20240139922
    Abstract: Provided is a working machine with improved durability. A nail driver (working machine) includes a hitting portion that is formed in a rod shape extending about an axis line, an injection portion that abuts on an outer peripheral surface of the hitting portion, thereby guiding a movement of the hitting portion toward one side in the axial direction, and a supply portion that energizes a fastener toward one side in a direction intersecting with the axial direction, thereby supplying the fastener to the injection portion. The hitting portion has a tip part, and a center part provided at a position different from that of the tip part in the axial direction. At least a part of an outer peripheral surface of the tip part (tip part outer peripheral surface) on an anti-feeder side with respect to the axis line protrudes from an outer peripheral surface of the center part (center par outer peripheral surface) on a supply portion side with respect to the axis line.
    Type: Application
    Filed: December 24, 2021
    Publication date: May 2, 2024
    Inventors: Takashi KAWAMATA, Masahiro MIURA, Kazuhiro OOTSUKA
  • Publication number: 20240092701
    Abstract: A method for manufacturing a ceramic sintered body substrate includes of disposing a first metal paste on a surface of a ceramic substrate, and of firing the ceramic substrate on which the first metal paste is disposed. In the disposing the first metal paste, the first metal paste contains a plurality of first metal powders, a plurality of active metal powders, and a plurality of inorganic fillers excluding metals, and in the firing the ceramic substrate, a firing temperature is equal to or higher than a melting point of the first metal powders.
    Type: Application
    Filed: September 15, 2023
    Publication date: March 21, 2024
    Applicant: NICHIA CORPORATION
    Inventors: Masaaki KATSUMATA, Eiko MINATO, Takashi KAWAMATA, Akiko NAGAE
  • Patent number: 9967920
    Abstract: This invention provides an electrical apparatus that includes a main body portion, a battery pack, and a frame portion. The main body portion comprises a converting portion that may convert electric power to one of light, wind, heat, and sound; and an outputting portion. The battery pack may detachably mounted on a battery holder provided at the main body portion, and may supply electric power to the converting portion. The frame portion may rotatably support the main body portion, and may define a first ground contact plane that can contact a ground surface and a second ground contact plane that can contact the ground surface at a different angle from an angle of the first ground contact plane. The main body portion may be rotatable relative to the frame portion without contacting the ground surface.
    Type: Grant
    Filed: April 16, 2014
    Date of Patent: May 8, 2018
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Takafumi Itoh, Masato Sakai, Yoshinori Ishizawa, Masanori Okada, Hiroyuki Hasegawa, Takashi Kawamata
  • Publication number: 20170331082
    Abstract: To provide an electric device that includes a compact cover that is easy to open and close. A portable radio 1 includes: a housing 2 including a device body 2A and a cover 2B, the device body 2A including an adapter compartment 9 configured to accommodate an adapter 8 connectable to an external power supply and a battery compartment 7 disposed at a different position from the adapter compartment 9 and configured to accommodate a battery 6, the cover 2B being configured to expose and close the adapter compartment 9 and the battery compartment 7; an adapter connector 21 provided at the device body 2A and connectable to the adapter 8; and a speaker 23 configured to be operated by accommodating the battery 6 in the battery compartment 7 or by connecting the adapter 8 to the adapter connector 21 and the external power supply.
    Type: Application
    Filed: September 29, 2015
    Publication date: November 16, 2017
    Inventors: Takashi Kawamata, Haruhisa Fujisawa
  • Publication number: 20140313706
    Abstract: This invention provides an electrical apparatus that includes a main body portion, a battery pack, and a frame portion. The main body portion comprises a converting portion that may convert electric power to one of light, wind, heat, and sound; and an outputting portion. The battery pack may detachably mounted on a battery holder provided at the main body portion, and may supply electric power to the converting portion. The frame portion may rotatably support the main body portion, and may define a first ground contact plane that can contact a ground surface and a second ground contact plane that can contact the ground surface at a different angle from an angle of the first ground contact plane. The main body portion may be rotatable relative to the frame portion without contacting the ground surface.
    Type: Application
    Filed: April 16, 2014
    Publication date: October 23, 2014
    Applicant: HITACHI KOKI CO., LTD.
    Inventors: Takafumi Itoh, Masato Sakai, Yoshinori Ishizawa, Masanori Okada, Hiroyuki Hasegawa, Takashi Kawamata
  • Patent number: 8740672
    Abstract: The present invention provides a power tool in which the permanent set of an elastic member is suppressed and the vibration reduction effect is maintained over a long period of time. A rubber ring is disposed as the elastic member between a wheel washer mounted on a spindle and a substrate of a diamond wheel, and these are secured by a locknut screwed to a tip of the spindle. This rubber ring absorbs the vibrations applied to the diamond wheel at grinding work. A mounting hole of the substrate is mounted on a boss portion of the wheel washer with a clearance fit, and spring pins whose both ends are supported by the wheel washer and a portion of a holding plate in the locknut are inserted into insertion holes of the substrate and insertion holes of the rubber ring with a clearance fit.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: June 3, 2014
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Takashi Kawamata, Shigeyoshi Kobayashi
  • Patent number: 8230606
    Abstract: The electric tool includes a base having an opening portion and a bottom face; a blade being projected downward from the bottom face of the base through the opening portion of the base, the blade being capable of cutting while sliding the bottom face of the base on an upper face of a work piece; a motor driving the blade; a housing accommodating the motor. The bottom face of the base is at least partially coated with a resin including fluorine.
    Type: Grant
    Filed: June 13, 2005
    Date of Patent: July 31, 2012
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Kenichirou Yoshida, Yoshio Osada, Mizuho Nakamura, Satsuo Sato, Junichi Kamimura, Takashi Kawamata
  • Publication number: 20120184192
    Abstract: To a power tool main body to which a main body spindle rotationally driving a tip tool is provided, a dust collection adapter for collecting dusts generated when a material to be ground is processed by the tip tool is held thereto. The dust collection adapter includes: a dust collection fan rotationally driven by the main body spindle; and a dust collection cover for containing the dust collection fan and covering a diametrical outside of the tip tool. The dust collection fan includes: a fan main body to which a plurality of blade portions are provided; and a threaded shaft portion provided to a center portion of the fan main body. To the threaded shaft portion, a female thread portion thread-coupled to the main body spindle and a male thread portion thread-coupled to a fastening thread member for fixing the tip tool are provided.
    Type: Application
    Filed: January 19, 2012
    Publication date: July 19, 2012
    Inventors: Takashi KAWAMATA, Hiroaki Yonekawa, Tomomasa Nishikawa, Noriyuki Horie, Hiroto Inagawa, Kenichi Katou
  • Publication number: 20120171938
    Abstract: The present invention provides a power tool in which the permanent set of an elastic member is suppressed and the vibration reduction effect is maintained over a long period of time. A rubber ring is disposed as the elastic member between a wheel washer mounted on a spindle and a substrate of a diamond wheel, and these are secured by a locknut screwed to a tip of the spindle. This rubber ring absorbs the vibrations applied to the diamond wheel at grinding work. A mounting hole of the substrate is mounted on a boss portion of the wheel washer with a clearance fit, and spring pins whose both ends are supported by the wheel washer and a portion of a holding plate in the locknut are inserted into insertion holes of the substrate and insertion holes of the rubber ring with a clearance fit.
    Type: Application
    Filed: December 27, 2011
    Publication date: July 5, 2012
    Inventors: Takashi KAWAMATA, Shigeyoshi Kobayashi
  • Patent number: 7357195
    Abstract: A power tool including a gear unit provided with a load moderating mechanism capable of reducing noise and prolonging service life. A coupling is force fitted with a spindle at a predetermined pressure allowing the spindle and the coupling to rotate relative to each other when a load exceeding a predetermined load is applied therebetween. A gear has a surround section having a convex and surrounding the coupling. The coupling has an abutment projection abutable against the convex and a damper projection. An elastic member is interposed between the damper projection and the surround section. Rotation of the gear is transmitted to the spindle through the elastic member and the coupling.
    Type: Grant
    Filed: April 7, 2005
    Date of Patent: April 15, 2008
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Junichi Kamimura, Hiroto Inagawa, Kenichirou Yoshida, Takashi Kawamata
  • Publication number: 20050274028
    Abstract: The electric tool includes a base having an opening portion and a bottom face; a blade being projected downward from the bottom face of the base through the opening portion of the base, the blade being capable of cutting while sliding the bottom face of the base on an upper face of a work piece; a motor driving the blade; a housing accommodating the motor. The bottom face of the base is at least partially coated with a resin including fluorine.
    Type: Application
    Filed: June 13, 2005
    Publication date: December 15, 2005
    Applicant: Hitachi Koki Co., Ltd.
    Inventors: Kenichirou Yoshida, Yoshio Osaka, Mizuho Nakamura, Satsuo Sato, Junichi Kamimura, Takashi Kawamata
  • Publication number: 20050224245
    Abstract: A power tool including a gear unit provided with a load moderating mechanism capable of reducing noise and prolonging service life. A coupling is force fitted with a spindle at a predetermined pressure allowing the spindle and the coupling to rotate relative to each other when a load exceeding a predetermined load is applied therebetween. A gear has a surround section having a convex and surrounding the coupling. The coupling has an abutment projection abutable against the convex and a damper projection. An elastic member is interposed between the damper projection and the surround section. Rotation of the gear is transmitted to the spindle through the elastic member and the coupling.
    Type: Application
    Filed: April 7, 2005
    Publication date: October 13, 2005
    Inventors: Junichi Kamimura, Hiroto Inagawa, Kenichirou Yoshida, Takashi Kawamata
  • Patent number: 4064224
    Abstract: A method of making fibrous alkali titanates comprising the steps of preparing a mixture including a titanium compound and an alkali metal compound in a molar ratio of 1.0 to 8.0 in terms of TiO.sub.2 :M.sub.2 O (M: Na, K, Rb, Cs), heating said mixture at a temperature of 1200.degree. to 1600.degree. C to the molten (liquid) phase, cooling the thus heated mixture to room temperature , and washing the thus treated product. This method is advantageous because fibrous alkali titanates of large ratio of length to diameter can be easily produced in high yield.
    Type: Grant
    Filed: January 28, 1976
    Date of Patent: December 20, 1977
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Takashi Kawamata, Tsuneo Inoue, Eiichi Hirota