Galvanized metal corrosion inhibitor
Patent 6468470 Issued on October 22, 2002. Estimated Expiration Date: 
June 18, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 18, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesPost treatment of conversion-coated zinc surfaces Galvanized metal corrosion inhibitor Method for treating water circulating systems Patent #: 6183649 InventorsAssigneeApplicationNo. 335622 filed on 06/18/1999US Classes:422/15, Using organic compound having phosphorus210/699, Phosphorus containing252/389.22, Pentavalent P, except H(n+2)PnO(3n+1)252/389.23, Pentavalent P, except H(n+2)PnO(3n+1)422/16, Using organic nitrogen compound other than ammonium salt422/17Using organic carboxylic acid or salt thereofExaminersPrimary: McKane, ElizabethAttorney, Agent or FirmForeign Patent References
International ClassC23F 011/167AbstractA white rust inhibiting composition and method of inhibiting white rust for evaporative water coolers are disclosed. The composition includes, in combination, a blend of one or more organophosphorus compounds, one or more tannin compounds, and one or more water soluble metal compounds.Field of SearchUsing organic compound having phosphorusUsing organic nitrogen compound other than ammonium salt Using organic carboxylic acid or salt thereof Phosphorus containing Nitrogen containing Destroying microorganisms Pentavalent P, except H(n+2)PnO(3n+1) Pentavalent P, except H(n+2)PnO(3n+1) Molybdenum, arsenic, antimony, vanadium, bismuth, tungsten, selenium, or tellurium containing | |
