Patents by Inventor Roy V. Comeaux

Roy V. Comeaux 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).

  • Removal of corrodants from NMP solvent by contacting with sacrificial metal
    Patent number: 4490240
    Abstract: Corrosion of the process equipment in solvent extraction units utilizing N methyl-2-pyrrolidone as the selective extraction solvent is significantly reduced by means of a sacrificial metal contacting zone or bed containing a metal or metal alloy with a higher electro chemical potential than the metals used in the extraction unit vessels and lines. Preferred sacrificial metals are magnesium, zinc, calcium, barium, and strontium, most preferably magnesium, as metal strips, shavings, ribbons, sponge, filings, chips, blocks, bricks, etc.
    Type: Grant
    Filed: August 29, 1983
    Date of Patent: December 25, 1984
    Assignee: Exxon Research and Engineering Co.
    Inventors: Roy V. Comeaux, Milton D. Leighton, Douglas G. Ryan