Patents by Inventor Kazuo Sanpei

Kazuo Sanpei 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).

  • Electric appliance, its assembling method, and its housing structure
    Patent number: 5905551
    Abstract: An upper case and a lower case are fixed without using screws so that assemblage workability is improved. An electric appliance can be divided into plastic upper case, metal-plate-made lower case, and logic package having print substrates. As a result, the electric appliance is easy to make.
    Type: Grant
    Filed: December 10, 1997
    Date of Patent: May 18, 1999
    Assignee: Hitachi Telecom Technologies Ltd.
    Inventors: Kazuo Sanpei, Tatsuo Yamauchi
  • Electric appliance, its assembling method, and its housing structure
    Patent number: 5838402
    Abstract: An upper case 1 and a lower case 2 are fixed by no screw, so that assemblage workability is improved. An electric appliance can be divided into plastic upper case 1, metal-plate-made lower case 2, and logic package 9 having print substrates. As a result, the electric appliance is easy to waste.
    Type: Grant
    Filed: August 28, 1996
    Date of Patent: November 17, 1998
    Assignee: Hitachi Telecom Technologies, Ltd.
    Inventors: Kazuo Sanpei, Tatsuo Yamauchi
  • Electric appliance, its assembling method, and its housing structure
    Patent number: 5602722
    Abstract: An electric appliance includes a case, an accommodation portion for accommodating a liquid crystal indicator, and upper and lower protrusions respectively arranged above and below an opening provided on stepped portion not arranged on the front face portion of the accommodation portion. The liquid crystal indicator engages with the upper protrusion and mounts on the lower protrusion such that the liquid crystal indicator is positioned adjacent to the stepped portion and is visible through the opening.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: February 11, 1997
    Assignee: Hitachi Telecom Technologies, Ltd.
    Inventors: Kazuo Sanpei, Tatsuo Yamauchi
  • Electric appliance, its assembling method, and its housing structure
    Patent number: 5594625
    Abstract: An upper case 1 and a lower case 2 are fixed by no screw, so that assemblage workability is improved. An electric appliance can be divided into plastic upper case 1, metal-plate-made lower case 2, and logic package 9 having print substrates. As a result, the electric appliance is easy to waste.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 14, 1997
    Assignee: Hitachi Telecom Technologies Ltd.
    Inventors: Kazuo Sanpei, Tatsuo Yamauchi
  • Housing structure of electric appliance and disassembling method thereof
    Patent number: 5581446
    Abstract: A housing structure of an electric appliance has an upper case and a lower case. The upper case is provided with a plurality of logic holding portions arranged on inner sides of left and right side face portions of the upper case. An interior one of the logic holding portions has a protrusion engagement portion which is defined by a slant face and a front face of the interior holding portion. The lower case is provided with a lower case side engagement portion which engages releasibly with the protrusion engagement portion. The lower case side engagement portion has a resilient half portion in a half support which is formed on a bottom face of the lower case and on which an extrusion portion that engages releasibly with the protrusion engagement portion and a threaded hole for a screw are formed.
    Type: Grant
    Filed: October 23, 1995
    Date of Patent: December 3, 1996
    Assignee: Hitachi Telecom Technologies Ltd.
    Inventors: Kazuo Sanpei, Tatsuo Yamauchi
  • Electric appliance, its assembling method, and its housing structure
    Patent number: 5461543
    Abstract: An upper case 1 and a lower case 2 are fixed by no screw, so that assemblage workability is improved. An electric appliance can be divided into plastic upper case 1, metal-plate-made lower case 2, and logic package 9 having print substrates.
    Type: Grant
    Filed: September 28, 1993
    Date of Patent: October 24, 1995
    Assignee: Hitachi Telecom Technologies Ltd.
    Inventors: Kazuo Sanpei, Tatsuo Yamauchi