Patents by Inventor Seiichi Hayakawa

Seiichi Hayakawa 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: 20190298034
    Abstract: Provided is a cosmetic applicator having an applying part at the tip end and a container containing liquid cosmetic to be applied through the applying part. A tip-most portion of the applying part is disposed at a position deviated from an axis of the applying part and an angle ? between a line perpendicular to the axis and a side ridge line at applying part end ranges from 10° to 60°, a circular flange is formed at a rear end of the applying part, a projecting length of the applying part from a front barrel ranges from 5 to 8 mm, a ratio of a major and minor axis Y, X of an opening is Y:X=1.3 to 2:1, and when A and B respectively denote an applied area at deformation load of 0.01 N and that at 0.1 N, A<B<3A is satisfied.
    Type: Application
    Filed: March 26, 2019
    Publication date: October 3, 2019
    Applicant: MITSUBISHI PENCIL COMPANY, LIMITED
    Inventors: Hitoshi Nakamura, Seiichi Takigawa, Takayuki Hayakawa, Jun Nakada
  • Publication number: 20150360648
    Abstract: A wiper arm including an arm main body pivotably connected to an arm head is provided in which the rotation angle of the arm main body is appropriately restricted while minimizing changes of the structure of the wiper arm from that of a wiper arm capable capable to be positioned in its locked back condition. A wiper arm 1 includes a retainer 3 capable of retaining a wiper blade, an arm head body 2 connected with the retainer 3 through a connection shaft 14 so that the retainer 3 is rotatable between an operational position and an upright position, and a rotation restricting member 30 pivotally connected through pivot shafts 16 provided on inner surfaces 12A of head arm sections 12 of the arm head body 2. The rotation restricting member 30 is pivotable around the pivot shaft 16 between a rotation restricting position and a rotation permitting position. In the rotation restriction position, the rotation restricting member 30 limits the rotation angle of the retainer 3 by contacting against the retainer 3.
    Type: Application
    Filed: November 19, 2013
    Publication date: December 17, 2015
    Applicant: NIPPON WIPER BLADE CO., LTD.
    Inventors: Katsuhiro OUCHI, Seiichi HAYAKAWA, Yuichi SHIRAISHI
  • Patent number: 8519561
    Abstract: A power module includes an upper arm circuit unit and a lower arm circuit unit each having a power semiconductor element; an insulating substrate with the units mounted on one surface thereof; a metal base bonded onto the other surface of the substrate opposite to the one surface where the units are mounted; a first connection conductor for supplying a high potential to the upper unit from outside; a second connection conductor for supplying a low potential to the lower unit from outside; an insulating sheet interposed between the conductors; and a resin case disposed on the metal base to support the conductors, the conductors are flat conductors and laminated with the sheet sandwiched therebetween; the sheet extends from one end of the laminated structure to secure the creepage distance between the conductors; and the case is furnished with a recess for containing the laminated structure.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: August 27, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Katsunori Azuma, Mutsuhiro Mori, Michiaki Hiyoshi, Seiichi Hayakawa, Koji Sasaki, Isamu Yoshida
  • Patent number: 8422235
    Abstract: The present invention provides a vehicle power module and a power converter including a power semiconductor element (328), a plurality of connecting conductors (371U, 372U, 373U) for transmitting current to the power semiconductor element (328), and a metallic base (304) upon which the power semiconductor element (328) and the plurality of connecting conductors (371U, 372U, and 373U) are mounted; and the power semiconductor element (328) and the plurality of connecting conductors (371U, 372U, and 373U) are mounted upon the metallic base (304) so as to form a looped current path. Desirably, the power semiconductor element (328) and the plurality of connecting conductors (371U, 372U, 373U) are arranged so as to form two or more looped current paths.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: April 16, 2013
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Katsunori Azuma, Mutsuhiro Mori, Kinya Nakatsu, Seiichi Hayakawa, Fusanori Nishikimi
  • Publication number: 20110051371
    Abstract: The present invention provides a vehicle power module and a power converter including a power semiconductor element (328), a plurality of connecting conductors (371U, 372U, 373U) for transmitting current to the power semiconductor element (328), and a metallic base (304) upon which the power semiconductor element (328) and the plurality of connecting conductors (371U, 372U, and 373U) are mounted; and the power semiconductor element (328) and the plurality of connecting conductors (371U, 372U, and 373U) are mounted upon the metallic base (304) so as to form a looped current path. Desirably, the power semiconductor element (328) and the plurality of connecting conductors (371U, 372U, 373U) are arranged so as to form two or more looped current paths.
    Type: Application
    Filed: July 30, 2009
    Publication date: March 3, 2011
    Applicant: Hitachi Automotive Systems, Ltd
    Inventors: Katsunori Azuma, Mutsuhiro Mori, Kinya Nakatsu, Seiichi Hayakawa, Fusanori Nishikimi
  • Publication number: 20100327654
    Abstract: A power module includes an upper arm circuit unit and a lower arm circuit unit each having a power semiconductor element; an insulating substrate with the units mounted on one surface thereof; a metal base bonded onto the other surface of the substrate opposite to the one surface where the units are mounted; a first connection conductor for supplying a high potential to the upper unit from outside; a second connection conductor for supplying a low potential to the lower unit from outside; an insulating sheet interposed between the conductors; and a resin case disposed on the metal base to support the conductors, the conductors are flat conductors and laminated with the sheet sandwiched therebetween; the sheet extends from one end of the laminated structure to secure the creepage distance between the conductors; and the case is furnished with a recess for containing the laminated structure.
    Type: Application
    Filed: June 29, 2010
    Publication date: December 30, 2010
    Applicant: Hitachi, Ltd.
    Inventors: Katsunori AZUMA, Mutsuhiro Mori, Michiaki Hiyoshi, Seiichi Hayakawa, Koji Sasaki, Isamu Yoshida
  • Patent number: 6665903
    Abstract: An arm head has a couple of hinge holes. A cover has a couple of hinge projections. The arm head and the cover are hingedly connected to each other through the hinge holes and the hinge projections. A rotation guide extends radially outwardly from each hinge hole. A protrusion protrudes radially outwardly from each hinge projection and is received in the rotation guide. A locking projection extends from the rotation guide. The locking projection is spaced from an opening movement limiting end of the rotation guide for a distance, which is substantially the same as a width of the protrusion of the hinge projection.
    Type: Grant
    Filed: April 10, 2002
    Date of Patent: December 23, 2003
    Assignees: Asmo Co., Lt.d., Nippon Wiper Blade Co., Ltd.
    Inventors: Kazuhide Tsukamoto, Yuji Morita, Takanari Itou, Takashi Kuboichi, Kazuhito Yokoo, Seiichi Hayakawa
  • Publication number: 20020152575
    Abstract: An arm head has a couple of hinge holes. A cover has a couple of hinge projections. The arm head and the cover are hingedly connected to each other through the hinge holes and the hinge projections. A rotation guide extends radially outwardly from each hinge hole. A protrusion protrudes radially outwardly from each hinge projection and is received in the rotation guide. A locking projection extends from the rotation guide. The locking projection is spaced from an opening movement limiting end of the rotation guide for a distance, which is substantially the same as a width of the protrusion of the hinge projection.
    Type: Application
    Filed: April 10, 2002
    Publication date: October 24, 2002
    Inventors: Kazuhide Tsukamoto, Yuji Morita, Takanari Itou, Takashi Kuboichi, Kazuhito Yokoo, Seiichi Hayakawa