Patents by Inventor Patrick C. Madden, II

Patrick C. Madden, II has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Use of thiosulfate salt for corrosion inhibition in acid gas scrubbing processes
    Patent number: 4944917
    Abstract: Disclosed is a method for inhibiting corrosion of metal surfaces in contact with H.sub.2 S-containing acid gases streams and aqueous amine scrubbing solutions, which method comprises: contacting the H.sub.2 S-containing stream with amine scrubbing solution in the presence of an effective amount of an ammonium or alkali-metal thiosulfate salt and an effective amount of sulfide and/or hydrosulfide ions.
    Type: Grant
    Filed: December 28, 1987
    Date of Patent: July 31, 1990
    Assignee: Exxon Research and Engineering Company
    Inventors: Patrick C. Madden, II, Z. Andrew Foroulis
  • Use of sulfur dioxide for corrosion inhibition in acid gas scrubbing processes
    Patent number: 4857283
    Abstract: Disclosed is a process for scrubbing acid gases from an H.sub.2 -containing acid gas stream by use of an aminecontaining aqueous scrubbing solution wherein the corrosion of metal surfaces in contact with such a solution is inhibited by use of an effective amount of sulfide dioxide.
    Type: Grant
    Filed: December 28, 1987
    Date of Patent: August 15, 1989
    Assignee: Exxon Research and Engineering Company
    Inventor: Patrick C. Madden, II