Patents by Inventor Yoshitaka Kawada

Yoshitaka Kawada 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: 10265800
    Abstract: According to one embodiment, a welding apparatus includes an irradiation device and a nozzle device. The irradiation device irradiates a target with laser light while scanning the laser light. The nozzle device includes an ejection port and ejects inert gas to an irradiation position of the laser light on the target through the ejection port located at a forward side in a scanning direction of the laser light relative to the irradiation position.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: April 23, 2019
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yoshitaka Kawada, Naotada Okada, Susumu Yahagi
  • Patent number: 10224519
    Abstract: A secondary battery according to an embodiment includes a container having a pouring hole through which an electrolyte is poured, and housing the electrolyte, poured through the pouring hole, together with an electrode body; and a sealing lid which is fixed to the container and is closing the pouring hole. The sealing lid has a welding mark existing in a ring shape with a depth through the sealing lid to a lid body of the container, and an inner circumferential side molten mark existing in a ring shape overlapping with the welding mark, on the inner circumferential side of the welding mark in the sealing lid, with a depth corresponding to the thickness of the sealing lid.
    Type: Grant
    Filed: January 23, 2012
    Date of Patent: March 5, 2019
    Assignee: Toshiba Corporation
    Inventors: Yoshitaka Kawada, Tetsuo Sakai, Natsuki Toyota, Naotada Okada, Susumu Yahagi
  • Publication number: 20160101483
    Abstract: According to one embodiment, a welding apparatus includes an irradiation device and a nozzle device. The irradiation device irradiates a target with laser light while scanning the laser light. The nozzle device includes an ejection port and ejects inert gas to an irradiation position of the laser light on the target through the ejection port located at a forward side in a scanning direction of the laser light relative to the irradiation position.
    Type: Application
    Filed: October 6, 2015
    Publication date: April 14, 2016
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yoshitaka KAWADA, Naotada OKADA, Susumu YAHAGI
  • Patent number: 9077047
    Abstract: A secondary battery according to an embodiment includes a container having a pouring hole through which an electrolyte is poured, and housing the electrolyte, poured through the pouring hole, together with an electrode body; and a sealing lid fixed to the container and closing the pouring hole. The container has a plurality of grooves extending in parallel along the outer edge of the pouring hole, in a predetermined region that surrounds the periphery of the pouring hole, and the sealing lid is provided on the plurality of grooves in such a manner as to close the pouring hole and is fixed to the container.
    Type: Grant
    Filed: January 23, 2012
    Date of Patent: July 7, 2015
    Assignee: Toshiba Corporation
    Inventors: Yoshitaka Kawada, Natsuki Toyota, Naotada Okada, Susumu Yahagi
  • Patent number: 9054393
    Abstract: A secondary battery according to an embodiment includes a container having a pouring hole through which an electrolyte is poured, and housing the electrolyte, poured through the pouring hole, together with an electrode body; and a sealing lid fixed to the container and closing the pouring hole. The container has a plurality of grooves extending in parallel along the outer edge of the pouring hole, in a predetermined region that surrounds the periphery of the pouring hole, and the sealing lid is provided on the plurality of grooves in such a manner as to close the pouring hole and is fixed to the container.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: June 9, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshitaka Kawada, Natsuki Toyota, Naotada Okada, Susumu Yahagi
  • Publication number: 20140020241
    Abstract: A secondary battery according to an embodiment includes a container having a pouring hole through which an electrolyte is poured, and housing the electrolyte, poured through the pouring hole, together with an electrode body; and a sealing lid fixed to the container and closing the pouring hole. The container has a plurality of grooves extending in parallel along the outer edge of the pouring hole, in a predetermined region that surrounds the periphery of the pouring hole, and the sealing lid is provided on the plurality of grooves in such a manner as to close the pouring hole and is fixed to the container.
    Type: Application
    Filed: September 19, 2013
    Publication date: January 23, 2014
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Yoshitaka Kawada, Natsuki Toyota, Naotada Okada, Susumu Yahagi
  • Publication number: 20120189903
    Abstract: A secondary battery according to an embodiment includes a container having a pouring hole through which an electrolyte is poured, and housing the electrolyte, poured through the pouring hole, together with an electrode body; and a sealing lid fixed to the container and closing the pouring hole. The container has a plurality of grooves extending in parallel along the outer edge of the pouring hole, in a predetermined region that surrounds the periphery of the pouring hole, and the sealing lid is provided on the plurality of grooves in such a manner as to close the pouring hole and is fixed to the container.
    Type: Application
    Filed: January 23, 2012
    Publication date: July 26, 2012
    Inventors: Yoshitaka Kawada, Natsuki Toyota, Naotada Okada, Susumu Yahagi
  • Publication number: 20120189904
    Abstract: A secondary battery according to an embodiment includes a container having a pouring hole through which an electrolyte is poured, and housing the electrolyte, poured through the pouring hole, together with an electrode body; and a sealing lid which is fixed to the container and is closing the pouring hole. The sealing lid has a welding mark existing in a ring shape with a depth through the sealing lid to a lid body of the container, and an inner circumferential side molten mark existing in a ring shape overlapping with the welding mark, on the inner circumferential side of the welding mark in the sealing lid, with a depth corresponding to the thickness of the sealing lid.
    Type: Application
    Filed: January 23, 2012
    Publication date: July 26, 2012
    Inventors: Yoshitaka Kawada, Tetsuo Sakai, Natsuki Toyota, Naotada Okada, Susumu Yahagi
  • Patent number: 8045132
    Abstract: A method of repairing a liquid crystal panel by irradiating a defective pixel of the liquid crystal panel with laser light, comprises: in a defective pixel including a dust, irradiating at least part of the defective pixel outside the dust with laser light while the dust is not substantially irradiated with the laser light. Alternatively, a method of repairing a liquid crystal panel by irradiating a defective pixel of the liquid crystal panel with laser light, comprises: in a defective pixel including a dust, determining a non-irradiation area including the dust and an irradiation area not including the dust, and irradiating at least part of the irradiation area with laser light while the non-irradiation area is not irradiated with the laser light.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: October 25, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshitaka Kawada, Hiroshi Ito
  • Patent number: 7692739
    Abstract: A liquid crystal panel comprises: a first substrate on which pixels of a plurality of colors are arranged; a second substrate; and a liquid crystal sandwiched between the first substrate and the second substrate. On a surface of at least one of the first and second substrates in contact with the liquid crystal, a concave portion is formed in at least a portion of the pixel of a color having the highest relative luminosity among the pixels of the plurality of colors. Alternatively, on a surface of at least one of the first and second substrates in contact with the liquid crystal, a protrusion is formed corresponding to the contour of the pixel of a color having the highest relative luminosity among the pixels of the plurality of colors.
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: April 6, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yoshitaka Kawada
  • Publication number: 20070013831
    Abstract: A liquid crystal panel comprises: a first substrate on which pixels of a plurality of colors are arranged; a second substrate; and a liquid crystal sandwiched between the first substrate and the second substrate. On a surface of at least one of the first and second substrates in contact with the liquid crystal, a concave portion is formed in at least a portion of the pixel of a color having the highest relative luminosity among the pixels of the plurality of colors. Alternatively, on a surface of at least one of the first and second substrates in contact with the liquid crystal, a protrusion is formed corresponding to the contour of the pixel of a color having the highest relative luminosity among the pixels of the plurality of colors.
    Type: Application
    Filed: July 13, 2006
    Publication date: January 18, 2007
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Yoshitaka Kawada
  • Publication number: 20060285068
    Abstract: A method of repairing a liquid crystal panel by irradiating a defective pixel of the liquid crystal panel with laser light, comprises: in a defective pixel including a dust, irradiating at least part of the defective pixel outside the dust with laser light while the dust is not substantially irradiated with the laser light. Alternatively, a method of repairing a liquid crystal panel by irradiating a defective pixel of the liquid crystal panel with laser light, comprises: in a defective pixel including a dust, determining a non-irradiation area including the dust and an irradiation area not including the dust, and irradiating at least part of the irradiation area with laser light while the non-irradiation area is not irradiated with the laser light.
    Type: Application
    Filed: June 2, 2006
    Publication date: December 21, 2006
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yoshitaka Kawada, Hiroshi Ito
  • Publication number: 20060087321
    Abstract: An defective-pixel repairing method is applicable to a liquid crystal display. A defective pixel of the liquid crystal display is scanned with a pulse laser beam having a repetition frequency of not lower than 1 kHz. The defective pixel is repaired in the state where an air bubble is present at the irradiated position of the pulse laser beam.
    Type: Application
    Filed: September 26, 2005
    Publication date: April 27, 2006
    Inventors: Yoshitaka Kawada, Ryuichi Togawa
  • Publication number: 20060087613
    Abstract: A defective-pixel repairing method is applied to a liquid crystal display. The method applies pulse laser beam to a signal line adjacent to a defective pixel, so as to generate an air bubble. The air bubble is to cover substantially the entirety of the defective pixel and is located at the position corresponding to the defective pixel. The method also applies pulse laser beam to substantially the entirety of the defective pixel where the air bubble is generated, thereby repairing the defective pixel.
    Type: Application
    Filed: September 26, 2005
    Publication date: April 27, 2006
    Inventors: Ryuichi Togawa, Yoshitaka Kawada, Kenta Fukatsu
  • Publication number: 20050213022
    Abstract: A method of correcting a defective pixel of a liquid crystal display by scanning the defective pixel with a laser beam. The liquid crystal display is moved to let the defective pixel face a lens which converges the laser beam. The laser beam is relatively moved to the lens in a direction orthogonal to the optical axis of the laser beam to scan the defective pixel.
    Type: Application
    Filed: March 23, 2005
    Publication date: September 29, 2005
    Inventor: Yoshitaka Kawada
  • Patent number: 5792520
    Abstract: A copper film layer and a resin film are sequentially layered on a skin material, the resin film is irradiated with a laser beam so as to be removed, a mask is formed on the copper film layer by use of the residual of the resin film, thereafter, an etching process is provided thereto, so that a copper film layer pattern is formed on the reflective surface of the skin material.
    Type: Grant
    Filed: August 22, 1996
    Date of Patent: August 11, 1998
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Akira Yamashita, Koichi Furukawa, Teruaki Orikasa, Noriaki Goto, Shigeki Matsunaka, Yoshitaka Kawada