Patents Assigned to Ondeo Nadco Company
  • Method of inhibiting corrosion of metal equipment which is cleaned with an inorganic acid
    Patent number: 6540943
    Abstract: The corrosion of metal equipment which is cleaned with an inorganic acid is inhibited by treating the equipment with a corrosion inhibitor composition containing at least one quaternary ammonium compound, a sulfur-containing compound and a nonionic surfactant in a solvent.
    Type: Grant
    Filed: April 3, 2000
    Date of Patent: April 1, 2003
    Assignee: Ondeo Nadco Company
    Inventors: Duane S. Treybig, Dennis A. Williams