Patents by Inventor Masaaki Hanawa

Masaaki Hanawa 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).

  • Patent number: 5972295
    Abstract: A sample of a sample rack is sampled at analyzing units in the middle of a transfer line. A standby unit and a rack collecting unit are arranged near an exit of the transfer line. After sample, sampleracks are sorted out to the standby unit or the rack collecting unit at a first switching unit. The racks contained in the standby unit are sorted out to a returning line or the rack collecting unit in a second switching unit corresponding to a judged result of whether or not reexamination is required.
    Type: Grant
    Filed: January 21, 1998
    Date of Patent: October 26, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Masaaki Hanawa, Hiroshi Mitsumaki, Tadashi Ohishi, Susumu Kai, Hiroshi Watanabe
  • Patent number: 5517870
    Abstract: A liquid sample is sucked from a staining vessel by a first sampling nozzle and the liquid sample is discharged into a flow cell unit, the liquid sample being supplied to the staining vessel by a second sampling nozzle so as to be stained in the staining vessel in advance. When the liquid sample is being discharged through the first sampling nozzle, a sheath liquid is supplied to a flow cell so that the sheath liquid flows with the liquid sample included therein. In this condition, passage of particles in the flow cell is detected by an optical system for detection at a still frame image pick-up position, and after a predetermined delay time based on the detection, strobe light is radiated so as to pick up a still frame image due to the scattered light to thereby perform classification and counting of the particles.
    Type: Grant
    Filed: December 22, 1993
    Date of Patent: May 21, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Masaaki Kurimura, Masaaki Hanawa
  • Patent number: 3951578
    Abstract: This invention relates to an apparatus for automatically adjusting the center-height of a mold and the like which are used for manufacturing concrete pipes characterized in comprising a supporting device which supports a mold and the like for manufacturing concrete pipes horizontally in the manner that the center of the axis of the mold moves vertically along a perpendicular line and stops it at a determined position, and a detecting device which detects the position of the mold by contacting with the outside of it and controls and stops the movement of the said supporting device when the center of the mold is placed at the determined position.
    Type: Grant
    Filed: June 28, 1974
    Date of Patent: April 20, 1976
    Assignee: Nippon Concrete Industries Co. Ltd.
    Inventors: Yoshiaki Horiuchi, Masaaki Hanawa, Shinzo Hasegawa