Patents by Inventor Yoshio Sugitatsu

Yoshio Sugitatsu 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).

  • Molded transformer
    Patent number: 5977855
    Abstract: A molded transformer includes a transformer body including a coil bobbin having a spool having a central through-hole and a collar at each of two ends thereof, and a conductive wire, such as a copper wire, wound around the spool, and an EE type or EI type ferrite core which is inserted into the coil bobbin; and a thermoplastic resin for molding the transformer body in such a manner that only a terminal portion used for mounting is exposed through the resin. The resin has a low molecular weight, ensuring a low molding stress and a low melting viscosity.
    Type: Grant
    Filed: November 20, 1992
    Date of Patent: November 2, 1999
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Katsumi Matsumura, Yutaka Hirooka, Kazunari Ishikawa, Masayuki Mizushima, Ken Koyama, Yoshio Sugitatsu