Patents by Inventor Hirotoshi Kawamura

Hirotoshi Kawamura 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).

  • Measurement of sizes of falling particles
    Patent number: 4912987
    Abstract: For measuring the sizes of particles in the falling state, electromagnetic waves having different frequencies are transmitted from a transmitter/receiver onto the particles in the falling state and reflected electromagnetic waves having different frequencies reflected from the particles in the falling state are received by the transmitter/receiver. Data of the distribution of sizes of the particles and the average size of the particles are derived from the detected intensities of the received reflected electromagnetic waves.
    Type: Grant
    Filed: March 2, 1989
    Date of Patent: April 3, 1990
    Assignee: Nippon Steel Corporation
    Inventors: Hirokatsu Yashiro, Jiro Ohno, Yoshiteru Matsuo, Hiroshi Nishikawa, Katsuhiko Yui, Hirotoshi Kawamura
  • Measurement of sizes of falling particles
    Patent number: 4843894
    Abstract: For measuring the sizes of particles in the falling state, electromagnetic waves having different frequencies are transmitted from a transmitter/receiver onto the particles in the falling state and reflected electromagnetic waves having different frequencies reflected from the particles in the falling state and received by the transmitter/receiver. Data of the distribution of sizes of the particles and the average size of the particles are derived from the detected intensities of the received reflected electromagnetic waves.
    Type: Grant
    Filed: September 14, 1987
    Date of Patent: July 4, 1989
    Assignee: Nippon Steel Corporation
    Inventors: Hirokatsu Yashiro, Jiro Ohno, Yoshiteru Matsuo, Hiroshi Nishikawa, Katsuhiko Yui, Hirotoshi Kawamura