Patents by Inventor Yoshihiro Mukawa

Yoshihiro Mukawa 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).

  • Bore hole scanner with position detecting device and light polarizers
    Patent number: 4899277
    Abstract: A bore hole scanner includes a light projecting device for projecting a light beam toward a bore hole wall surface. A conical mirror is arranged coaxially with respect to a sonde for condensing light reflected from the bore hole wall surface. An image forming device is arranged in front of the conical mirror. A photoelectric transducing device converts a light signal into an electric signal. Optical fibers introduce an image, which is formed on concentric circles by the image forming device to the photoelectric transducing device. A data processing device scans and extracts signals from the photoelectric transducing device and generates and processes image data indicative of the bore hole wall surface. A sonde position detecting device detects the orientation and position of the sonde. Rotating portions are dispensed with by using the conical mirror and optical fibers, and a linear CCD array can be used as the photoelectric transducing device.
    Type: Grant
    Filed: October 28, 1988
    Date of Patent: February 6, 1990
    Assignees: Shimizu Construction Co., Ltd., Core Inc.
    Inventors: Yunosuke Iizuka, Takashi Ishii, Yoshihiro Mukawa, Kouji Nagata, Yoshitaka Matsumoto, Osamu Murakami