Patents by Inventor Takaya Ohsawa

Takaya Ohsawa 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).

  • Ultrasonic probe and manufacturing method thereof
    Patent number: 5886454
    Abstract: An ultrasonic probe includes a plurality of piezoelectric elements arrayed on acoustic absorption backing material with predetermined spaces, a plurality of acoustic matching members formed on the piezoelectric elements and arrayed with gaps smaller than array gaps of the piezoelectric elements, polymer resin with which only the gaps between the piezoelectric elements are filled and having hardness lower than material of the piezoelectric elements, and an acoustic lens formed on the plurality of acoustic matching members.
    Type: Grant
    Filed: February 18, 1997
    Date of Patent: March 23, 1999
    Assignee: Hitachi Medical Corporation
    Inventors: Yukio Ito, Yutaka Sato, Toshio Kondo, Takaya Ohsawa