Patents by Inventor Hiroshi Yokokawa

Hiroshi Yokokawa 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).

  • Nuclear magnetic resonance apparatus of fourier transform type
    Patent number: 3968423
    Abstract: The nuclear resonance signal obtained from the sample is stored in a memory circuit and the stored signal is then repeatedly read out. A periodic function which is derived as a result of the transformation of a triangular wave into a trapezoidal one, is used for the Fourier transformation of the repeatedly read-out signal. The adverse influence of the transient phenomenon in the h-f impulse signal on the resultant spectrum is eliminated by stopping the Fourier transformation only during the initial portion of the read-out period of the memory circuit.
    Type: Grant
    Filed: October 10, 1974
    Date of Patent: July 6, 1976
    Assignee: Hitachi, Ltd.
    Inventors: Yasutaka Hoshino, Yoshiharu Utsumi, Nobuhiko Aoki, Hiroshi Yokokawa