Patents by Inventor Koushou Aikawa

Koushou Aikawa 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: 6844546
    Abstract: An explosive detection system including a sample injection region, an ion source region for generating ions of a sample injected by the ion injection region, a mass analysis region for analyzing mass of the ions, a heater for heating the sample injection region and the ion source region, a plurality of pumps for exhausting a chamber in which the mass analysis region is disposed, and a controller for controlling the regions and the plurality of pumps. The controller conducts control so as to heat the sample injection region and the ion source region with the heaters, then reduce heating electric power supplied to the heaters in order to prevent a predetermined electric power value from being exceeded, and drive the plurality of pumps successively to exhaust the chamber.
    Type: Grant
    Filed: August 28, 2002
    Date of Patent: January 18, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Hisashi Nagano, Yasuaki Takada, Izumi Waki, Koushou Aikawa, Masayuki Takizawa, Shigenori Morishima
  • Publication number: 20030193019
    Abstract: An explosive detection system including a sample injection region, an ion source region for generating ions of a sample injected by the ion injection region, a mass analysis region for analyzing mass of the ions, a heater for heating the sample injection region and the ion source region, a plurality of pumps for exhausting a chamber in which the mass analysis region is disposed, and a controller for controlling the regions and the plurality of pumps. The controller conducts control so as to heat the sample injection region and the ion source region with the heaters, then reduce heating electric power supplied to the heaters in order to prevent a predetermined electric power value from being exceeded, and drive the plurality of pumps successively to exhaust the chamber.
    Type: Application
    Filed: August 28, 2002
    Publication date: October 16, 2003
    Inventors: Hisashi Nagano, Yasuaki Takada, Izumi Waki, Koushou Aikawa, Masayuki Takizawa, Shigenori Morishima