Patents Assigned to Tadahiro OHMI and KABUSHIKI KAISHA ULTRACLEAN TECHNOLOGY RESEARCH INSTITUTE
  • Welding method for welded members subjected to fluoride passivation treatment, fluoride passivation retreatment method, and welded parts
    Publication number: 20010023888
    Abstract: The present invention provides a welding method for materials to be welded which are subjected to fluoride passivation treatment, and a fluoride passivation retreatment method, wherein, when fluoride passivation retreatment was conducted after welding, there is no generation of particles or dust, and superior resistance is provided to fluorine system gases.
    Type: Application
    Filed: December 27, 2000
    Publication date: September 27, 2001
    Applicant: Tadahiro OHMI and KABUSHIKI KAISHA ULTRACLEAN TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Tadahiro Ohmi, Takahisa Nitta, Yasuyuki Shirai, Osamu Nakamura