Patents by Inventor Hisako Murobushi

Hisako Murobushi 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).

  • Working environment density measuring method
    Patent number: 6014888
    Abstract: An environmental air is sucked by the pump with control unit, and organic solvent contained in the environmental air is collected by the absorbent. Organic solvent having passed through the absorbent is detected by the semiconductor gas sensor. If passage of a material to be measured is detected by the semiconductor gas sensor, operation of the pump with control unit is stopped, and the operation for collecting the material is terminated. Then the absorbent is taken out from the collecting tube, the material collected is quantified by means of gas chromatography, and the density is measured. With this configuration, measurement of a density of a material to be measured in a working environment can be executed accurately.
    Type: Grant
    Filed: September 18, 1998
    Date of Patent: January 18, 2000
    Assignee: Ricoh Company, Ltd.
    Inventors: Yuji Noritake, Hisako Murobushi, Hajime Hori
  • Solid material collector with detector
    Patent number: 5861053
    Abstract: An environmental air is sucked by the pump with control unit, and organic solvent contained in the environmental air is collected by the absorbent. Organic solvent having passed through the absorbent is detected by the semiconductor gas sensor. If passage of a material to be measured is detected by the semiconductor gas sensor, operation of the pump with control unit is stopped, and the operation for collecting the material is terminated. Then the absorbent is taken out from the collecting tube, the material collected is quantified by means of gas chromatography, and the density is measured. With this configuration, measurement of a density of a material to be measured in a working environment can be executed accurately.
    Type: Grant
    Filed: November 14, 1996
    Date of Patent: January 19, 1999
    Assignee: Ricoh Company, Ltd.
    Inventors: Yuji Noritake, Hisako Murobushi, Hajime Hori