Patents by Inventor Shuji Wakafuji

Shuji Wakafuji 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).

  • AC adapter with heat radiation sheet
    Patent number: 7300302
    Abstract: An AC adapter has a synthetic resin case, a switching regulator circuit assembly with an AC input terminal in the synthetic resin case, a synthetic resin name plate, and a metallic Bsheet for heat radiation separate from the resin name plate. A surface of the case has a first concave portion for the name plate and a second concave portion for the metallic sheet in the first concave portion, the metallic sheet being attached in the second concave portion with the name plate attached in the first concave portion and covering the attached metallic sheet.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: November 27, 2007
    Assignee: Mitsumi Electric Co., Ltd.
    Inventors: Terutomo Kajiwara, Dai Sasaki, Shuji Wakafuji
  • AC adapter
    Publication number: 20070002597
    Abstract: An AC adapter includes: a synthetic resin case; a switching regulator circuit assembly having an AC input terminal and a DC output terminal, the switching regulator circuit assembly being housed in the synthetic resin case; a synthetic resin name plate; and a metallic sheet for heat radiation separate from the resin name plate. The metallic sheet is attached to a surface of the case except for a portion for the AC input terminal.
    Type: Application
    Filed: April 21, 2006
    Publication date: January 4, 2007
    Inventors: Terutomo Kajiwara, Dai Sasaki, Shuji Wakafuji
  • AC/DC converter
    Patent number: D682781
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: May 21, 2013
    Assignee: Mitsumi Electric Co., Ltd
    Inventors: Shuji Wakafuji, Takenori Kinkawa