Patents by Inventor Weldon C. Kennedy, Jr.

Weldon C. Kennedy, Jr. 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).

  • Corrosion inhibitors for cleaning solutions
    Patent number: 4637899
    Abstract: A corrosion inhibitor composition comprising:(1) at least one of an aliphatic pyridinium salt or an aliphatic quinolinium salt; and(2) a sulfur-containing compound. The compositions are useful in inhibiting the corrosion of metals during the cleaning of process equipment using industrial aqueous cleaning solutions.
    Type: Grant
    Filed: January 30, 1984
    Date of Patent: January 20, 1987
    Assignee: Dowell Schlumberger Incorporated
    Inventor: Weldon C. Kennedy, Jr.
  • Removal of iron from chelant solutions
    Patent number: 4629570
    Abstract: A process is described for removing dissolved iron from an aqueous liquid containing iron in the form of a soluble complex with alkylenepolyamine polyacetic acids or salts thereof. The process comprises the steps of (a) adjusting the pH of said aqueous liquid to at least about 12.5, (b) adding sufficient quantities of a soluble calcium salt to facilitate the growth of insoluble iron hydroxide particles, and (c) separating the resulting insoluble mass containing iron hydroxide from the liquid effluent.
    Type: Grant
    Filed: July 18, 1985
    Date of Patent: December 16, 1986
    Assignee: Dowell Schlumberger Incorporated
    Inventor: Weldon C. Kennedy, Jr.
  • Method and composition for corrosion
    Patent number: 4493775
    Abstract: An improved composition for inhibiting the corrosion of ferrous metals in acidic environments, especially in the presence of H.sub.2 S.
    Type: Grant
    Filed: September 30, 1983
    Date of Patent: January 15, 1985
    Assignee: The Dow Chemical Company
    Inventors: M. Dewayne Coffey, Mary Y. Kelly, Weldon C. Kennedy, Jr.