Patents by Inventor Hikaru Kamiirisa

Hikaru Kamiirisa 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).

  • Measuring tool for collecting down hole information and metering valve for producing mud-pulse used in the same
    Patent number: 5495237
    Abstract: A measuring tool for collecting down hole information, which essentially has a sensor sub including plural data collecting sensors secured at a forward portion of a drilling pipe and a sonde movable in the drilling pipe. Both the sensor sub and sonde employ a set of loop antennas to effect radiocommunication between them to thereby certainly send data detected by means of the sensors to the sonde.
    Type: Grant
    Filed: December 6, 1993
    Date of Patent: February 27, 1996
    Assignee: Akishima Laboratories (Mitsui Zosen) Inc.
    Inventors: Hajime Yuasa, Kazuho Hosono, Hikaru Kamiirisa, Keijiro Yamamoto, Hideyuki Miyaji