Patents by Inventor Masahide Aoyama

Masahide Aoyama 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).

  • Agent for treating hyperuricemia
    Patent number: 4883821
    Abstract: Hyperuricemia is treated with N-(3-(4'-(2", 6"-dimethylheptyl)phenyl)butanoyl)- ethanolamine.
    Type: Grant
    Filed: March 31, 1989
    Date of Patent: November 28, 1989
    Assignee: Eisai Co., Ltd.
    Inventors: Kouji Nakamoto, Nobumichi Morishita, Masahide Aoyama
  • Comparison circuit
    Patent number: 4814643
    Abstract: A comparison circuit includes a differential amplifier having first and second input circuits each of which is formed of darlington-connected transistors and which are connected to receive first and second input signals. The comparison circuit further includes an operation mode control circuit for selectively short-circuiting the base-emitter path of each of the first stage bipolar transistors in the first and second input circuits, in response to the first and second input signals.
    Type: Grant
    Filed: July 14, 1987
    Date of Patent: March 21, 1989
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Ichiro Ishihara, Masahide Aoyama
  • I.sup.2 L Circuit with a variable injector current source
    Patent number: 4438353
    Abstract: An I.sup.2 L logic circuit provided with a logic section which includes at least one I.sup.2 L unit circuit formed of a transistor for injector and a driving transistor.The I.sup.2 L logic circuit is further provided with a supply circuit for supplying the I.sup.2 L unit circuit with an injector current corresponding to a control signal. The supply circuit is formed of a first circuit for steadily supplying the I.sup.2 L unit circuit with a predetermined injector current, and a second circuit for supplying the I.sup.2 L unit circuit with another injector current in accordance with the control signal, the first and second circuits being connected in parallel with each other.
    Type: Grant
    Filed: May 7, 1981
    Date of Patent: March 20, 1984
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Jun Sano, Masahide Aoyama, Daijiro Kubo