Patents Assigned to Chiyoda Chemical Kabushiki Kaisha
  • Water soluable metal anticorrosive
    Patent number: 5744069
    Abstract: A water soluble metal anticorrosive comprising a tetrazole compound or a water soluble salt thereof represented by the following formula (1): ##STR1## wherein R and R' each indicate hydrogen, an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group, a phenyl group, an alkylphenyl group, an amino group, a mercapto group or an alkylmercapto group).
    Type: Grant
    Filed: November 15, 1994
    Date of Patent: April 28, 1998
    Assignee: Chiyoda Chemical Kabushiki Kaisha
    Inventors: Akio Maeda, Makoto Kanekiyo