Patents by Inventor Katsuyuki Hosoya

Katsuyuki Hosoya 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).

  • Fluorescent lamp unit
    Patent number: 4282563
    Abstract: A fluorescent lamp unit according to this invention has a structure wherein a circular fluorescent tube is fixed merely by the engagement between an upper cover having a screw base and a lower cover. A starting circuit of the fluorescent lamp unit uses a ballast resistor as a stabilizer.Accordingly, the fluorescent lamp unit is small in size, light in weight and low in price and can be conveniently attached to a socket.
    Type: Grant
    Filed: June 18, 1979
    Date of Patent: August 4, 1981
    Assignee: Hitachi, Ltd.
    Inventors: Shigenori Ohta, Katsuyuki Hosoya
  • Fluorescent lamp
    Patent number: D292130
    Type: Grant
    Filed: February 1, 1985
    Date of Patent: September 29, 1987
    Assignee: Hitachi, Ltd.
    Inventors: Kazuhiko Kubo, Masanori Tsuda, Taisuke Hirota, Katsuyuki Hosoya, Ichirou Torii, Atsushi Suzuki