Patents by Inventor Terufumi Akama

Terufumi Akama 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).

  • Patent number: 5509413
    Abstract: For an ultrasonic wave to be transmitted, an ultrasonic probe driving unit can apply a stepwise varying drive voltage to the ultrasonic probe. The drive voltage of the driving unit is so selectively set by a setting unit as to allow the output level of the ultrasonic wave to be in a range below, but nearest to, an upper limit. It is, therefore, possible to obtain maximal image quality in a range in which safety is secured.
    Type: Grant
    Filed: August 5, 1994
    Date of Patent: April 23, 1996
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Terufumi Akama, Yoichi Sumino
  • Patent number: 5487386
    Abstract: An ultrasonic diagnostic apparatus transmits an ultrasonic wave to an object to be examined and forms an image of tomographic information in the object obtained through an ultrasonic probe. The apparatus measures a comulative operation time of the ultrasonic probe and output the cumulative operation time.
    Type: Grant
    Filed: April 21, 1994
    Date of Patent: January 30, 1996
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Naoto Wakabayashi, Masayoshi Tsuchiko, Terufumi Akama, Hiromi Maekawa, Hiroyuki Shikata, Nobuo Yamazaki, Tomio Kawaguchi