Patents by Inventor Tetsuo Shiromizu

Tetsuo Shiromizu 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 apparatus
    Patent number: 3969208
    Abstract: In the ultrasonic apparatus being so constructed as to be capable of directing the oscillation of ultrasonic waves to the inner part of a container and the like, an ultrasonic apparatus characterized by the provision of an ultrasonic wave transfer preventive member to ensure the prevention of transfer of ultrasonic waves to unintended matters other than the object matter.
    Type: Grant
    Filed: April 8, 1974
    Date of Patent: July 13, 1976
    Assignees: The Fujikura Cable Works, Ltd., NGK Spark Plug Co., Ltd., Seidensha Electronics Co., Ltd.
    Inventors: Setsuya Isshiki, Tetsuo Shiromizu, Hiroto Oshima, Kozo Okada, Kiyoshi Kazunaga, Eiji Mori