Patents by Inventor Toyosaku Sato

Toyosaku Sato 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).

  • Automatic separator/extractor and method of controlling same
    Publication number: 20060110296
    Abstract: The invention relates to an automatic separator/extractor and a method of controlling same, with the object, particularly in all manner of fields such as medical science, agricultural science, scientific fields, or pharmaceuticals, of being able to achieve at high speed and accuracy, extraction or separation of precipitate or supernatant at a high quality, accuracy and reliability, above that which can be achieved by manual means.
    Type: Application
    Filed: January 4, 2006
    Publication date: May 25, 2006
    Applicant: Precision Systems Science Co., Ltd.
    Inventors: Hideji Tajima, Norihisa Sagawa, Toyosaku Sato, Masataka Morita, Hiroshi Hayasaka, Kouji Sato, Kahoru Takahashi
  • Pipetting apparatus and a method of pipetting a liquid
    Patent number: 6773927
    Abstract: A position of a piston fluid-tightly sliding along an inner surface of a pipette is instantaneously changed by a short distance to jet a portion of a liquid in the pipette through the nozzle of the pipette as a drop. The instantaneously changed position is provided by a motor which is commonly used for moderately changing the position of the piston to taking-in and taking-out the liquid. The instantaneous minute position changing may be provided with a piezoelectric actuator. An attachable nozzle cap having a nozzle-cap nozzle (through hole) of which diameter is smaller than that of the nozzle of the pipette may be used. The portion of the liquid jetted from the pipette may be detected. The instantaneous changing may be repeated to jet a desired amount of said liquid. The short distance may be adjusted in accordance with the desired amount.
    Type: Grant
    Filed: February 13, 2001
    Date of Patent: August 10, 2004
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Hidetaka Osawa, Masahiro Inaniwa, Toyosaku Sato
  • Pipetting apparatus and a method of pipetting a liquid
    Publication number: 20010016358
    Abstract: A position of a piston fluid-tightly sliding along an inner surface of a pipette is instantaneously changed by a short distance to jet a portion of a liquid in the pipette through the nozzle of the pipette as a drop. The instantaneously changed position is provided by a motor which is commonly used for moderately changing the position of the piston to taking-in and taking-out the liquid. The instantaneous minute position changing may be provided with a piezoelectric actuator. An attachable nozzle cap having a nozzle-cap nozzle (through hole) of which diameter is smaller than that of the nozzle of the pipette may be used. The portion of the liquid jetted from the pipette may be detected. The instantaneous changing may be repeated to jet a desired amount of said liquid. The short distance may be adjusted in accordance with the desired amount.
    Type: Application
    Filed: February 13, 2001
    Publication date: August 23, 2001
    Applicant: HITACHI KOKI CO., LTD.
    Inventors: Hidetaka Osawa, Masahiro Inaniwa, Toyosaku Sato