Patents by Inventor Nobukazu Hayakawa

Nobukazu Hayakawa 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).

  • Oscillating circuit
    Patent number: 6437651
    Abstract: An electric potential of an epitaxial layer 2A provided under a bonding pad 5 to which a resonance circuit for a VCO is to be connected is fixed to a predetermined (Vcc) electric potential through a resistor 6 in a conventional floating state. Consequently, a speed of a change in the electric potential of the epitaxial layer 2A is increased and a value of a parasitic capacity is stabilized quickly. Consequently, a drift can be improved when a power supply is turned ON.
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: August 20, 2002
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Hirokazu Chigira, Masao Okumura, Tatsuro Koyanagi, Naoshi Mashimo, Tomoyuki Saito, Mitsuo Osawa, Nobukazu Hayakawa, Kouki Kubo
  • Oscillating circuit
    Publication number: 20010050597
    Abstract: An electric potential of an epitaxial layer 2A provided under a bonding pad 5 to which a resonance circuit for a VCO is to be connected is fixed to a predetermined (Vcc) electric potential through a resistor 6 in a conventional floating state. Consequently, a speed of a change in the electric potential of the epitaxial layer 2A is increased and a value of a parasitic capacity is stabilized quickly. Consequently, a drift can be improved when a power supply is turned ON.
    Type: Application
    Filed: March 29, 2001
    Publication date: December 13, 2001
    Inventors: Hirokazu Chigira, Masao Okumura, Tatsuro Koyanagi, Naoshi Mashimo, Tomoyuki Saito, Mitsuo Osawa, Nobukazu Hayakawa, Kouki Kubo