Patents by Inventor Mitunao Okumura

Mitunao Okumura 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).

  • Flyback transformer including a plated metal coil and having reduced leakage flux
    Patent number: 5241293
    Abstract: A flyback transformer includes at least one primary coil and at least one secondary coil formed thereon. Each primary and secondary coil may be a metal plating coil with an insulating bobbin and a conductor formed thereon. Secondary coils may be formed of pairs of metal plating coils connected in series. One to three primary coils may have secondary coils sandwiched therebetween. The transformer may also have a resonance capacitor integrally formed therein, and may have respective rectifying diodes connected between the secondary coils.
    Type: Grant
    Filed: February 6, 1991
    Date of Patent: August 31, 1993
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Mitunao Okumura
  • Flyback transformer with integrally formed resonance capacitor
    Patent number: 5012179
    Abstract: A flyback transformer includes a film wound unit which is composed of a first and second film sheets on which a first and second conductors are formed. A primary coil is formed by the first conductor, and a resonance capacitor which is connected to the primary coil is formed between the first and second conductors. A plurality of secondary coils are sequentially formed, and rectifying diodes are respectively connected between the respective secondary coils. Each of the secondary coils may be a metal plating coil.
    Type: Grant
    Filed: June 14, 1989
    Date of Patent: April 30, 1991
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Mitunao Okumura