Patents Represented by Attorney Tom M. Breininger

Find this attorney in the Justia Lawyer Directory

  • Phosphonate/thiophosphonate coking inhibitors
    Patent number: 5779881
    Abstract: A method to inhibit coke formation on heat transfer surfaces used to heat or cool a petroleum feedstock at coke-forming conditions is disclosed. The heat transfer surfaces are treated with an effective amount of phosphonate to inhibit coke formation on the heat transfer surfaces. The phosphonate is essentially free from contributing to corrosion and from producing detrimental by-products.
    Type: Grant
    Filed: January 6, 1997
    Date of Patent: July 14, 1998
    Assignee: Nalco/Exxon Energy Chemicals, L.P.
    Inventors: Youdong Tong, Michael K. Poindexter