Patents Assigned to Daido Sanso Kabushiki Kaisha
  • Method for the disposal of polychlorinated biphenyls
    Patent number: 4351978
    Abstract: The invention provides a method of disposing of polychlorinated biphenyls without causing a health hazard to the public in which the polychlorinated biphenyls are converted into harmless and useful compounds. This is accomplished by the hydrogenation-dechlorination thereof.
    Type: Grant
    Filed: July 21, 1980
    Date of Patent: September 28, 1982
    Assignees: Osaka Prefectural Government, Daido Sanso Kabushiki Kaisha
    Inventors: Yasuhiro Hatano, Kazumune Nakao
  • Process for the mass production of ozone
    Patent number: 4131528
    Abstract: The invention provides a process for the mass production of ozone in a liquid form from liquid oxygen, by the utilization of ozonizing radiations or electric discharge occurring in the oxygen gasified by being warmed to a temperature not higher than the boiling point of ozone.
    Type: Grant
    Filed: December 23, 1976
    Date of Patent: December 26, 1978
    Assignee: Daido Sanso Kabushiki Kaisha
    Inventors: Minoru Tsujimoto, Minoru Okada, Yuji Suzuki, Toshihiro Hirai