Patents Examined by David P. Port
  • Apparatus for detecting nickel/vanadium contained in oil
    Patent number: 4720842
    Abstract: An apparatus for detecting heavy metals in an oil sample which radiates X-rays from a target type X-ray tube through an iron filter and then upon a sample cell containing the oil to be measured therein and detects fluorescent X-rays excited in the oil by an energy dispersion type fluorescent X-ray detector.
    Type: Grant
    Filed: March 25, 1986
    Date of Patent: January 19, 1988
    Assignee: Horiba, Ltd.
    Inventors: Akimichi Kira, Yoshinori Hosokawa