Patents by Inventor Yuujirou Kurokawa

Yuujirou Kurokawa 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).

  • Quadrupole mass spectrometer
    Patent number: 8674298
    Abstract: A quadrupole mass spectrometer for use in analyzing gas components in a test piece is made in a constitution in which resistance heating of a grid is materialized, and in which a high-accuracy analysis of the gas components is possible at a low cost while preventing the sensitivity from lowering. A quadrupole mass spectrometer is provided with a sensor section which can be detachably fitted to the test piece.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: March 18, 2014
    Assignee: Ulvac, Inc.
    Inventors: Toyoaki Nakajima, Yuujirou Kurokawa, Tsutomu Yuri, Ryota Tanaka
  • QUADRUPOLE MASS SPECTROMETER
    Publication number: 20120280122
    Abstract: A quadrupole mass spectrometer for use in analyzing gas components in a test piece is made in a constitution in which resistance heating of a grid is materialized, and in which a high-accuracy analysis of the gas components is possible at a low cost while preventing the sensitivity from lowering. A quadrupole mass spectrometer is provided with a sensor section which can be detachably fitted to the test piece.
    Type: Application
    Filed: February 15, 2011
    Publication date: November 8, 2012
    Inventors: Toyoaki Nakajima, Yuujirou Kurokawa, Tsutomu Yuri, Ryota Tanaka