Patents by Inventor Hirotoshi Muraishi

Hirotoshi Muraishi 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).

  • Spacer, printed circuit board, and electronic equipment
    Patent number: 7573718
    Abstract: The spacer is formed as an elastic member with no ends thereof, which is detachably attached, by exploiting its elastic deformation, onto a printed wiring board to which is fixed an electronic component having a component package, on one of whose surfaces connection terminals are arranged. Since the spacer is attached on the printed wiring board to enclose an electronic component so as to seal a gap formed between the electronic component and a printed wiring board, it is possible to prevent foreign objects entering the gap, so that failures, such as insufficient insulation, caused by such foreign objects are also prevented. Since the spacer is easily removed from the printed wiring board, it is recyclable and economical.
    Type: Grant
    Filed: May 20, 2004
    Date of Patent: August 11, 2009
    Assignee: Fujitsu Limited
    Inventors: Yoshinori Uzuka, Masahiro Suzuki, Takeshi Nishiyama, Masaki Yoshimaru, Hirotoshi Muraishi
  • Spacer, printed circuit board, and electronic equipment
    Publication number: 20050167153
    Abstract: The spacer is formed as an elastic member with no ends thereof, which is detachably attached, by exploiting its elastic deformation, onto a printed wiring board to which is fixed an electronic component having a component package, on one of whose surfaces connection terminals are arranged. Since the spacer is attached on the printed wiring board to enclose an electronic component so as to seal a gap formed between the electronic component and a printed wiring board, it is possible to prevent foreign objects entering the gap, so that failures, such as insufficient insulation, caused by such foreign objects are also prevented. Since the spacer is easily removed from the printed wiring board, it is recyclable and economical.
    Type: Application
    Filed: May 20, 2004
    Publication date: August 4, 2005
    Applicant: Fujitsu Limited
    Inventors: Yoshinori Uzuka, Masahiro Suzuki, Takeshi Nishiyama, Masaki Yoshimaru, Hirotoshi Muraishi